Port security not only provides port security modes to enhance network access security, but also provides MAC-based network access control for 802.1X, MAC authentication, Web authentication, and static users.

Major functions

Port security provides the following functions:

· Prevents unauthorized access to a network by checking the source MAC address of inbound traffic.

· Prevents access to unauthorized devices or hosts by checking the destination MAC address of outbound traffic.

· Controls MAC address learning and authentication on a port to make sure the port learns only source trusted MAC addresses.

Port security features

NTK

The need to know (NTK) feature prevents traffic interception by checking the destination MAC address in the outbound frames. The feature ensures that frames are sent only to the following hosts:

· Hosts that have passed authentication.

· Hosts whose MAC addresses have been learned or configured on the access device.

Intrusion protection

The intrusion protection feature checks the source MAC address in inbound frames for illegal frames, and takes a predefined action on each detected illegal frame. The action can be disabling the port temporarily, disabling the port permanently, or blocking frames from the illegal MAC address for a period set by the MAC block timer.

A frame is illegal if its source MAC address cannot be learned in a port security mode or it is from a client that has failed 802.1X or MAC authentication.

Port security modes

Port security supports the following categories of security modes:

· MAC learning control—Includes two modes: autoLearn and secure. MAC address learning is permitted on a port in autoLearn mode and disabled in secure mode.

· Authentication—Security modes in this category implement MAC authentication, 802.1X authentication, or a combination of these two authentication methods.

Upon receiving a frame, the port in a security mode searches the MAC address table for the source MAC address. If a match is found, the port forwards the frame. If no match is found, the port learns the MAC address or performs authentication, depending on the security mode. If the frame is illegal, the port takes the predefined NTK or intrusion protection action, or sends SNMP notifications. Outgoing frames are not restricted by port security's NTK action unless they trigger the NTK feature.

Table 1 describes the port security modes and the security features.

Table 1 Port security modes

Purpose	Security mode		Features that can be triggered
Turning off the port security feature	noRestrictions (the default mode) In this mode, port security is disabled on the port and access to the port is not restricted.		N/A
Controlling MAC address learning	autoLearn		NTK/intrusion protection
Controlling MAC address learning	secure		NTK/intrusion protection
Performing 802.1X authentication	userLogin		NTK (ntkauto mode)
	userLoginSecure		NTK/intrusion protection
	userLoginSecureExt
	userLoginWithOUI
Performing MAC authentication	macAddressWithRadius		NTK/intrusion protection
Performing a combination of MAC authentication and 802.1X authentication	Or	macAddressOrUserLoginSecure	NTK/intrusion protection
	Or	macAddressOrUserLoginSecureExt
	Else	macAddressElseUserLoginSecure
	Else	macAddressElseUserLoginSecureExt
	And	macAddressAndUserLoginSecureExt

The mode names are illustrated as follows:

· userLogin specifies 802.1X authentication and port-based access control. userLogin with Secure specifies 802.1X authentication and MAC-based access control. Ext indicates allowing multiple 802.1X users to be authenticated and serviced at the same time. A security mode without Ext allows only one user to pass 802.1X authentication.

· macAddress specifies MAC authentication.

· Else specifies that the authentication method before Else is applied first. If the authentication fails, whether to turn to the authentication method following Else depends on the protocol type of the authentication request.

· Or specifies that the authentication method following Or is applied first. If the authentication fails, the authentication method before Or is applied.

· And indicates that the authentication method before And is applied first. After the authentication succeeds, the system turns to the authentication method that follows And upon receiving the request of the authentication method.

Controlling MAC address learning

· autoLearn.

A port in this mode can learn MAC addresses. The automatically learned MAC addresses are not added to the MAC address table as dynamic MAC address. Instead, these MAC addresses are added to the secure MAC address table as secure MAC addresses. You can also configure secure MAC addresses by using the port-security mac-address security command.

A port in autoLearn mode allows frames sourced from the following MAC addresses to pass:

¡ Secure MAC addresses.

¡ MAC addresses configured by using the mac-address dynamic and mac-address static commands.

When the number of secure MAC addresses reaches the upper limit, the port transitions to secure mode.

· secure.

MAC address learning is disabled on a port in secure mode. You configure MAC addresses by using the mac-address static and mac-address dynamic commands. For more information about configuring MAC address table entries, see Layer 2—LAN Switching Configuration Guide.

A port in secure mode allows only frames sourced from the following MAC addresses to pass:

¡ Secure MAC addresses.

¡ MAC addresses configured by using the mac-address dynamic and mac-address static commands.

Performing 802.1X authentication

· userLogin.

A port in this mode performs 802.1X authentication and implements port-based access control. The port can service multiple 802.1X users. Once an 802.1X user passes authentication on the port, any subsequent 802.1X users can access the network through the port without authentication.

· userLoginSecure.

A port in this mode performs 802.1X authentication and implements MAC-based access control. The port services only one user passing 802.1X authentication.

· userLoginSecureExt.

This mode is similar to the userLoginSecure mode except that this mode supports multiple online 802.1X users.

· userLoginWithOUI.

This mode is similar to the userLoginSecure mode. The difference is that a port in this mode also permits frames from one user whose MAC address contains a specific OUI.

In this mode, the port performs OUI check at first. If the OUI check fails, the port performs 802.1X authentication. The port permits frames that pass OUI check or 802.1X authentication.

NOTE:

An OUI is a 24-bit number that uniquely identifies a vendor, manufacturer, or organization. In MAC addresses, the first three octets are the OUI.

Performing MAC authentication

macAddressWithRadius: A port in this mode performs MAC authentication, and services multiple users.

Performing a combination of MAC authentication and 802.1X authentication

· macAddressOrUserLoginSecure.

This mode is the combination of the macAddressWithRadius and userLoginSecure modes. The mode allows one 802.1X authentication user and multiple MAC authentication users to log in.

In this mode, the port performs 802.1X authentication first. By default, if 802.1X authentication fails, MAC authentication is performed.

However, the port in this mode processes authentication differently when the following conditions exist:

¡ The port is enabled with parallel processing of MAC authentication and 802.1X authentication.

¡ The port is enabled with the 802.1X unicast trigger.

¡ The port receives a packet from an unknown MAC address.

Under such conditions, the port sends a unicast EAP-Request/Identity packet to the MAC address to initiate 802.1X authentication. After that, the port immediately processes MAC authentication without waiting for the 802.1X authentication result.

· macAddressOrUserLoginSecureExt.

This mode is similar to the macAddressOrUserLoginSecure mode, except that this mode supports multiple 802.1X and MAC authentication users.

· macAddressElseUserLoginSecure.

This mode is the combination of the macAddressWithRadius and userLoginSecure modes, with MAC authentication having a higher priority as the Else keyword implies. The mode allows one 802.1X authentication user and multiple MAC authentication users to log in.

In this mode, the port performs MAC authentication upon receiving non-802.1X frames. Upon receiving 802.1X frames, the port performs MAC authentication and then, if the authentication fails, 802.1X authentication.

· macAddressElseUserLoginSecureExt.

This mode is similar to the macAddressElseUserLoginSecure mode except that this mode supports multiple 802.1X and MAC authentication users as the Ext keyword implies.

· macAddressAndUserLoginSecureExt.

In this mode, a user must pass both MAC authentication and 802.1X authentication to access the authorized network resources.

The device uses the following process to handle an access user on a port operating in this mode:

a. Performs MAC authentication for the user.

b. Marks the user as a temporary MAC authentication user when the user passes MAC authentication. A temporary MAC authentication user can access only resources in the 802.1X guest VLAN or VSI.

c. After receiving 802.1X protocol packets from the user on the port, the device performs 802.1X authentication for the user.

d. After the user passes 802.1X authentication on the port, the device removes the temporary MAC authentication user entry. Then, the user comes online as an 802.1X user.

Authentication load sharing modes in M-LAG environments

As shown in Figure 1, use M-LAG to configure Device A and Device B into an M-LAG system for load sharing and node redundancy. When one of the devices fails, traffic is switched to the other device to ensure service continuity.

For users attached to the M-LAG interfaces on an M-LAG system, port security provides the following authentication load sharing modes:

· Centralized mode—In this mode, the primary M-LAG member device processes authentication services for all users attached to any M-LAG interfaces in the system.

· Distributed modes—In a distributed mode, both M-LAG member devices provide authentication services for users attached to the M-LAG interfaces. Port security provides the following distributed authentication processing modes:

¡ Distributed local mode—Each M-LAG member device processes authentication for users attached to their local M-LAG interfaces.

¡ Distributed even-/odd-MAC mode—In this mode, one M-LAG member device processes authentication for packets with an even source MAC address and the other M-LAG member device processes authentication for packets with an odd source MAC address. In this mode, you must configure one M-LAG member device to process authentication for even source MAC addresses and configure the other M-LAG member device to process authentication for odd source MAC addresses.

One M-LAG member device automatically synchronizes user data to the other M-LAG member device upon each successful user authentication. This ensures that when one M-LAG member device fails, the other member device can take over to process authentication services for all users.

Figure 1 M-LAG network diagram

Restrictions and guidelines: Port security configuration

This feature applies to networks, such as a WLAN, that require different authentication methods for different users on a port.

As a best practice, use the 802.1X authentication or MAC authentication feature rather than port security for scenarios that require only 802.1X authentication or MAC authentication. For more information about 802.1X and MAC authentication, see "Configuring 802.1X" and "Configuring MAC authentication."

The secure and userlogin-withoui port security modes are not supported on Layer 2 aggregate interfaces. Other port security settings are supported on both Layer 2 Ethernet interfaces and Layer 2 aggregate interfaces.

After a Layer 2 Ethernet interface is added to an aggregation group, port security settings on the interface do not take effect.

Do not delete a Layer 2 aggregate interface if the interface has online 802.1X or MAC authentication users.

When RADIUS DAS is enabled, an M-LAG system does not support the following operations:

· Shuts down or reboots the access ports for 802.1X, Web authentication, MAC authentication users by sending CoA messages.

· Reauthenticates these users by sending CoA messages.

For more information about RADIUS DAS, see "Configuring AAA."

To ensure a successful HTTPS redirect for users in either of the following situations, make sure VLAN interfaces or VSI interfaces exist for the VLANs or VSIs that transport their packets, respectively:

· The users are assigned a redirect URL.

· EAD assistant is enabled.

Port security tasks at a glance

To configure port security, perform the following tasks:

1. Configuring basic features of port security

¡ Enabling port security

¡ Setting the port security mode

¡ (Optional.) Setting port security's limit on the number of secure MAC addresses on a port

¡ (Optional.) Configuring secure MAC addresses

¡ (Optional.) Configuring NTK

¡ (Optional.) Configuring intrusion protection

¡ Configuring an authentication load sharing mode for users attached to M-LAG interfaces

Perform this task on an M-LAG system.

2. (Optional.) Configuring extended features of port security

¡ Ignoring authorization information from the server

¡ Configuring MAC move

¡ Enabling overwrite of local MAC entries with remote MAC entries for MAC addresses moved to a remote device

¡ Enabling the authorization-fail-offline feature

¡ Setting port security's limit on the number of MAC addresses for specific VLANs on a port

¡ Enabling open authentication mode

¡ Applying a NAS-ID profile to port security

¡ Enabling the escape critical VSI feature for 802.1X and MAC authentication users

¡ Specifying a preauthentication domain for port security users on a port

¡ Specifying a domain for port security users redirected to an unavailable URL

¡ Configuring static users for port access authentication

¡ Configuring a static user range for port access authentication

- Enabling static user IP update

- Setting the maximum number of concurrent static users allowed on a port

- Specifying an ACL to match the MAC addresses of static users

¡ Setting port security timers

The extended port security features can also take effect when port security is disabled but 802.1X or MAC authentication is enabled.

3. (Optional.) Enabling SNMP notifications for port security

4. (Optional.) Enabling port security user logging

Enabling port security

Restrictions and guidelines

When you configure port security, follow these restrictions and guidelines:

· When port security is enabled, you cannot enable 802.1X or MAC authentication, or change the access control mode or port authorization state. Port security automatically modifies these settings in different security modes.

· You can use the undo port-security enable command to disable port security. Because the command logs off online users, make sure no online users are present.

· Enabling or disabling port security resets the following security settings to the default:

¡ 802.1X access control mode, which is MAC-based.

¡ Port authorization state, which is auto.

For more information about 802.1X authentication and MAC authentication configuration, see "Configuring 802.1X" and "Configuring MAC authentication."

Prerequisites

Before you enable port security, disable 802.1X and MAC authentication globally.

Procedure

1. Enter system view.

system-view

2. Enable port security.

port-security enable

By default, port security is disabled.

Setting the port security mode

Restrictions and guidelines

You can specify a port security mode when port security is disabled, but your configuration cannot take effect.

Changing the port security mode of a port logs off the online users of the port.

Do not enable 802.1X authentication or MAC authentication on a port where port security is enabled.

After enabling port security, you can change the port security mode of a port only when the port is operating in noRestrictions (the default) mode. To change the port security mode for a port in any other mode, first use the undo port-security port-mode command to restore the default port security mode.

The device supports the URL attribute assigned by a RADIUS server in the following port security modes:

· mac-authentication.

· mac-else-userlogin-secure.

· mac-else-userlogin-secure-ext.

· userlogin-secure.

· userlogin-secure-ext.

· userlogin-secure-or-mac.

· userlogin-secure-or-mac-ext.

· userlogin-withoui.

During authentication, the HTTP or HTTPS requests of a user are redirected to the Web interface specified by the server-assigned URL attribute. After the user passes the Web authentication, the RADIUS server records the MAC address of the user and uses a DM (Disconnect Message) to log off the user. When the user initiates 802.1X or MAC authentication again, it will pass the authentication and come online successfully.

When the port security mode is macAddressAndUserLoginSecureExt on a port, follow these restrictions and guidelines:

· To make sure the 802.1X clients attached to the port can initiate authentication, enable unicast trigger on the port by using the dot1x unicast-trigger command.

· The MAC authentication guest VLAN or VSI on the port does not take effect. For the temporary MAC authentication users to access a limited set of resources, configure an 802.1X guest VLAN or VSI on the port.

· If accounting is not required for the temporary MAC authentication users, configure different ISP domains for MAC authentication users and 802.1X users. In the ISP domain for MAC authentication users, set the accounting method to none.

To redirect the HTTPS requests of port security users, specify the HTTPS redirect listening port on the device. For more information, see HTTP redirect in Layer 3—IP Services Configuration Guide.

Prerequisites

Before you set a port security mode for a port, complete the following tasks:

· Disable 802.1X and MAC authentication.

· If you are configuring the autoLearn mode, set port security's limit on the number of secure MAC addresses. You cannot change the setting when the port is operating in autoLearn mode.

Procedure

1. Enter system view.

system-view

2. Set an OUI value for user authentication.

port-security oui index index-value mac-address oui-value

By default, no OUI values are configured for user authentication.

This command is required only for the userlogin-withoui mode.

You can set multiple OUIs, but when the port security mode is userlogin-withoui, the port allows one 802.1X user and only one user that matches one of the specified OUIs.

3. Enter interface view.

interface interface-type interface-number

4. Set the port security mode.

port-security port-mode { autolearn | mac-and-userlogin-secure-ext | mac-authentication | mac-else-userlogin-secure | mac-else-userlogin-secure-ext | secure | userlogin | userlogin-secure | userlogin-secure-ext | userlogin-secure-or-mac | userlogin-secure-or-mac-ext | userlogin-withoui }

By default, a port operates in noRestrictions mode.

Setting port security's limit on the number of secure MAC addresses on a port

About this task

You can set the maximum number of secure MAC addresses that port security allows on a port for the following purposes:

· Controlling the number of concurrent users on the port.

For a port operating in a security mode (except for autoLearn and secure), the upper limit equals the smaller of the following values:

¡ The limit of the secure MAC addresses that port security allows.

¡ The limit of concurrent users allowed by the authentication mode in use.

· Controlling the number of secure MAC addresses on the port in autoLearn mode.

You can also set the maximum number of secure MAC addresses that port security allows for specific VLANs or each VLAN on a port.

Port security's limit on the number of secure MAC addresses on a port is independent of the MAC learning limit described in MAC address table configuration. For more information about MAC address table configuration, see Layer 2—LAN Switching Configuration Guide.

Procedure

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Set the maximum number of secure MAC addresses allowed on a port.

port-security max-mac-count max-count[ vlan [ vlan-id-list ] ]

By default, port security does not limit the number of secure MAC addresses on a port.

Configuring secure MAC addresses

About secure MAC addresses

Secure MAC addresses are configured or learned in autoLearn mode. If the secure MAC addresses are saved, they can survive a device reboot. You can bind a secure MAC address only to one port in a VLAN.

Secure MAC addresses include static, sticky, and dynamic secure MAC addresses.

Table 2 Comparison of static, sticky, and dynamic secure MAC addresses

Type	Address sources	Aging mechanism	Can be saved and survive a device reboot?
Static	Manually added (by using the port-security mac-address security command without the sticky keyword).	Not available. The static secure MAC addresses never age out unless you perform any of the following tasks: · Manually remove these MAC addresses. · Change the port security mode. · Disable the port security feature.	Yes.
Sticky	· Manually added (by using the port-security mac-address security command with the sticky keyword). · Converted from dynamic secure MAC addresses. · Automatically learned when the dynamic secure MAC feature is disabled.	By default, sticky MAC addresses do not age out. However, you can configure an aging timer or use the aging timer together with the inactivity aging feature to remove old sticky MAC addresses. · If only the aging timer is configured, the aging timer counts up regardless of whether traffic data has been sent from the sticky MAC addresses. · If both the aging timer and the inactivity aging feature are configured, the aging timer restarts once traffic data is detected from the sticky MAC addresses.	Yes. The secure MAC aging timer restarts at a reboot.
Dynamic	· Converted from sticky MAC addresses. · Automatically learned after the dynamic secure MAC feature is enabled.	Same as sticky MAC addresses.	No. All dynamic secure MAC addresses are lost at reboot.

When the maximum number of secure MAC address entries is reached, the port changes to secure mode. In secure mode, the port cannot add or learn any more secure MAC addresses. The port allows only frames sourced from secure MAC addresses or MAC addresses configured by using the mac-address dynamic or mac-address static command to pass through.

Prerequisites

Before you configure secure MAC addresses, complete the following tasks:

· Set port security's limit on the number of MAC addresses on the port. Perform this task before you enable autoLearn mode.

· Set the port security mode to autoLearn.

· Configure the port to permit packets of the specified VLAN to pass or add the port to the VLAN. Make sure the VLAN already exists.

Adding secure MAC addresses

1. Enter system view.

system-view

2. Set the secure MAC aging timer.

port-security timer autolearn aging [ second ] time-value

By default, secure MAC addresses do not age out.

3. Configure a secure MAC address.

¡ Configure a secure MAC address in system view.

port-security mac-address security [ sticky ] mac-address interface interface-type interface-number vlan vlan-id

¡ Execute the following commands in sequence to configure a secure MAC address in interface view:

interface interface-type interface-number

port-security mac-address security [ sticky ] mac-address vlan vlan-id

By default, no manually configured secure MAC addresses exist.

In a VLAN, a MAC address cannot be specified as both a static secure MAC address and a sticky MAC address.

Enabling inactivity aging for secure MAC addresses

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Enable inactivity aging for secure MAC addresses.

port-security mac-address aging-type inactivity

By default, the inactivity aging feature is disabled for secure MAC addresses.

Enabling the dynamic secure MAC feature

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Enable the dynamic secure MAC feature.

port-security mac-address dynamic

By default, the dynamic secure MAC feature is disabled. Sticky MAC addresses can be saved to the configuration file. Once saved, they can survive a device reboot.

Configuring NTK

About this task

The NTK feature checks the destination MAC address in outbound frames to make sure frames are forwarded only to trustworthy devices.

The NTK feature supports the following modes:

· ntkonly—Forwards only unicast frames with a known destination MAC address.

· ntk-withbroadcasts—Forwards only broadcast and unicast frames with a known destination MAC address.

· ntk-withmulticasts—Forwards only broadcast, multicast, and unicast frames with a known destination MAC address.

· ntkauto—Forwards only broadcast, multicast, and unicast frames with a known destination MAC address, and only when the port has online users.

Restrictions and guidelines

The NTK feature drops any unicast frame with an unknown destination MAC address.

Not all port security modes support triggering the NTK feature. For more information, see Table 1.

Procedure

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Configure the NTK feature.

port-security ntk-mode { ntk-withbroadcasts | ntk-withmulticasts | ntkauto | ntkonly }

By default, NTK is disabled on a port and all frames are allowed to be sent.

Configuring intrusion protection

About this task

Intrusion protection takes one of the following actions on a port in response to illegal frames:

· blockmac—Adds the source MAC addresses of illegal frames to the blocked MAC address list, and then discards frames sourced from blocked MAC addresses for a period set by the block timer. A blocked MAC address will be unblocked when the block timer expires.

· disableport—Disables the port until you bring it up manually.

· disableport-temporarily—Disables the port for a period of time. The period can be configured with the port-security timer disableport command.

If the action is disableport or disableport-temporarily, you can also enable strict intrusion protection to enhance security. With strict intrusion protection, the port shuts down when it receives a frame whose source MAC address is a secure MAC address on another port in the same VLAN.

Restrictions and guidelines

On a port operating in either macAddressElseUserLoginSecure mode or macAddressElseUserLoginSecureExt mode, intrusion protection is triggered only after both MAC authentication and 802.1X authentication fail for the same frame.

Strict intrusion protection takes effect only when the intrusion protection action is disableport or disableport-temporarily. When strict intrusion protection is enabled on a port, you cannot change the intrusion protection action to blockmac on that port. To change the intrusion protection action to blockmac, you must first disable strict intrusion protection on that port.

Procedure

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Configure the intrusion protection feature.

port-security intrusion-mode { blockmac | disableport | disableport-temporarily }

By default, intrusion protection is disabled.

4. (Optional.) Enable strict intrusion protection.

port-security strict-intrusion-protection enable

By default, strict intrusion protection is disabled.

5. Return to system view.

quit

6. (Optional.) Set the silence timeout period during which a port remains disabled.

port-security timer disableport time-value

By default, the port silence timeout period is 20 seconds.

7. (Optional.) Set the block timer for blocked MAC addresses.

port-security timer blockmac time-value

By default, the block timer is 180 seconds.

Configuring an authentication load sharing mode for users attached to M-LAG interfaces

About this task

This feature takes effect only on 802.1X, Web authentication, and MAC authentication users attached to M-LAG interfaces in an M-LAG environment.

In an M-LAG system, the M-LAG member devices exchange configuration information with each other to check for configuration conflicts. If a configuration conflict exists, the M-LAG member devices do not allow new users to come online.

For more information about M-LAG, see Layer 2—LAN Switching Configuration Guide.

Restrictions and guidelines

CAUTION:

To avoid user logoffs caused by configuration conflicts, do not change the authentication load sharing mode for users on M-LAG interfaces when port security, 802.1X, Web authentication, or MAC authentication is enabled.

Make sure the M-LAG member devices are consistent in authentication load sharing settings for users attached to M-LAG interfaces.

· Centralized mode—Configure both devices to operate in centralized mode for user authentication.

· Distributed local mode—Configure both M-LAG member devices to operate in distributed local mode for user authentication.

· Distributed even-/odd-MAC mode—Configure one M-LAG member device in distributed even-MAC mode and the other to operate in distributed odd-MAC mode for user authentication.

To ensure correct user data processing, follow these guidelines when you configure the peer aggregate interfaces on each remote access device connected to the M-LAG interfaces:

· If the M-LAG system uses distributed local mode for user authentication, link-aggregation load sharing on the access device can only be based on one of the following criteria:

¡ Destination IP address.

¡ Destination MAC address.

¡ Source IP address.

¡ Source MAC address.

· In an 802.1X authentication scenario, you must configure the access device to ignore all packet fields except the source MAC if it uses the default link-aggregation load sharing mode.

In centralized mode, if all member ports of an M-LAG interface belong only to one M-LAG member device and the M-LAG interface forwards authentication traffic, users attached to the M-LAG interface cannot come online. To ensure that users attached to such M-LAG interfaces can come online, do not set the authentication load sharing mode to centralized mode.

For more information about M-LAG, see Layer 2—LAN Switching Configuration Guide. For more information about link aggregation load sharing, see Ethernet link aggregation in Layer 2—LAN Switching Configuration Guide.

Procedure

1. Enter system view.

system-view

2. Set the authentication load sharing mode for users attached to M-LAG interfaces.

port-security m-lag load-sharing-mode { centralized | distributed { even-mac | local | odd-mac } }

By default, local mode applies. Each M-LAG member device authenticates users on its local M-LAG interfaces.

Ignoring authorization information from the server

About this task

You can configure a port to ignore the authorization information received from the server (local or remote) after an 802.1X or MAC authentication user passes authentication.

Procedure

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Ignore the authorization information received from the authentication server.

port-security authorization ignore

By default, a port uses the authorization information received from the authentication server.

Configuring MAC move

About this task

Port security MAC move takes effect on online users authenticated through 802.1X authentication, MAC authentication, or Web authentication in the following scenarios:

· Inter-port move on a device—An authenticated online user moves between ports on the device. The user VLAN or authentication method might change or stay unchanged after the move.

· Inter-VLAN move on a port—An authenticated online user moves between VLANs on a trunk or hybrid port. This mode takes effect only when the packets that trigger authentication are VLAN tagged.

Port security MAC move allows an authenticated online user on one port or VLAN to be reauthenticated and come online on another port or VLAN without going offline first. After the user passes authentication on the new port or VLAN, the system removes the authentication session of the user on the original port or VLAN. This action ensures that the user stays online on only one port in one VLAN.

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NOTE:

For MAC authentication, the MAC move feature applies only when MAC authentication single-VLAN mode is used. The MAC move feature does not apply to MAC authentication users that move between VLANs on a port with MAC authentication multi-VLAN mode enabled.

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If this feature is disabled, authenticated users must go offline first before they can be reauthenticated successfully on a new port or VLAN to come online.

Restrictions and guidelines

As a best practice to minimize security risks, enable MAC move only if user roaming between ports is required.

Authenticated users cannot move between ports on a device or between VLANs on a port if the maximum number of online users on the authentication server has been reached.

MAC authentication multi-VLAN mode has higher priority than MAC move for users moving between VLANs on a port. If MAC authentication multi-VLAN mode is enabled, these users can come online in the new VLAN without being reauthenticated. To enable MAC authentication multi-VLAN mode, use the mac-authentication host-mode multi-vlan command. For more information about MAC authentication multi-VLAN mode, see "Configuring MAC authentication."

Procedure

1. Enter system view.

system-view

2. Enable MAC move.

port-security mac-move permit [ port | vlan ]

By default, MAC move is disabled.

Enabling overwrite of local MAC entries with remote MAC entries for MAC addresses moved to a remote device

About this task

This feature is typically used in an EVPN or M-LAG environment. It enables the device to overwrite local authenticated MAC entries with remote authenticated MAC entries received from remote devices over tunnels or the peer link immediately, without waiting for the local entries to age out. This overwrite mechanism ensures that the device can promptly update authenticated MAC entries to forward traffic correctly for port security users after they move to a remote device and reauthenticate to the network.

Procedure

1. Enter system view.

system-view

2. Enable the device to overwrite the local MAC entry for a MAC address with the remote MAC entry for that MAC address after a MAC move

port-security mac-move overwrite-local

By default, the device overwrites the local MAC entry for a MAC address with the remote MAC entry for that MAC address after a MAC move.

Enabling the authorization-fail-offline feature

About the authorization-fail-offline feature

IMPORTANT:

The authorization-fail-offline feature takes effect only on port security users that have failed ACL authorization.

The authorization-fail-offline feature logs off port security users that have failed authorization.

A user fails authorization in the following situations:

· The device or server fails to assign the specified authorization attribute to the user.

· The device or server assigns authorization information that does not exist on the device to the user.

This feature does not apply to users that have failed VLAN authorization. The device logs off these users directly.

You can also enable the quiet timer feature for 802.1X or MAC authentication users that are logged off by the authorization-fail-offline feature. The device adds these users to the 802.1X or MAC authentication quiet queue. Within the quiet timer, the device does not process packets from these users or authenticate them. If you do not enable the quiet timer feature, the device immediately authenticates these users upon receiving packets from them.

Prerequisites

For the quiet timer feature to take effect, complete the following tasks:

· For 802.1X users, use the dot1x quiet-period command to enable the quiet timer and use the dot1x timer quiet-period command to set the timer.

· For MAC authentication users, use the mac-authentication timer quiet command to set the quiet timer for MAC authentication.

Procedure

1. Enter system view.

system-view

2. Enable the authorization-fail-offline feature.

port-security authorization-fail offline [ quiet-period ]

By default, this feature is disabled, and the device does not log off users that have failed authorization.

Setting port security's limit on the number of MAC addresses for specific VLANs on a port

About this task

Typically, port security allows the access of the following types of MAC addresses on a port:

· MAC addresses that pass 802.1X authentication or MAC authentication.

· MAC addresses in the MAC authentication guest or critical VLAN, MAC addresses in the MAC authentication guest or critical VSI, and MAC addresses in the MAC authentication critical microsegment.

· MAC addresses in the 802.1X guest, Auth-Fail, or critical VLAN and MAC addresses in the 802.1X guest, Auth-Fail, or critical VSI.

· MAC addresses that pass Web authentication and MAC addresses in the Web authentication Auth-Fail VLAN.

This feature limits the number of MAC addresses that port security allows to access a port through specific VLANs. Use this feature to prevent resource contentions among MAC addresses and ensure reliable performance for each access user on the port. When the number of MAC addresses in a VLAN on the port reaches the upper limit, the device denies any subsequent MAC addresses in the VLAN on the port.

Restrictions and guidelines

On a port, the maximum number of MAC addresses in a VLAN cannot be smaller than the number of existing MAC addresses in the VLAN. If the specified maximum number is smaller, the setting does not take effect.

Procedure

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Set port security's limit on the number of MAC addresses for specific VLANs on the port.

port-security mac-limit max-number per-vlan vlan-id-list

The default setting is 2147483647.

Enabling open authentication mode

About this task

This feature enables access users (802.1X or MAC authentication users) of a port to come online and access the network even if they use nonexistent usernames or incorrect passwords.

Access users that come online in open authentication mode are called open users. Authorization and accounting are not available for open users. To display open user information, use the following commands:

· display dot1x connection open.

· display mac-authentication connection open.

This feature does not affect the access of users that use correct user information.

Restrictions and guidelines

When you configure open authentication mode, follow these restrictions and guidelines:

· If global open authentication mode is enabled, all ports are enabled with open authentication mode regardless of the port-specific open authentication mode setting. If global open authentication mode is disabled, whether a port is enabled with open authentication mode depends on the port-specific open authentication mode setting.

· The open authentication mode setting has lower priority than the 802.1X Auth-Fail VLAN and the MAC authentication guest VLAN. Open authentication mode does not take effect on a port if the port is also configured with the 802.1X Auth-Fail VLAN or the MAC authentication guest VLAN. For information about 802.1X authentication and MAC authentication, see "802.1X overview," "Configuring 802.1X," and "Configuring MAC authentication."

· The open authentication mode setting has lower priority than the 802.1X Auth-Fail VSI and the MAC authentication guest VSI. Open authentication mode does not take effect on a port if the port is also configured with the 802.1X Auth-Fail VSI or the MAC authentication guest VSI. For information about 802.1X authentication and MAC authentication, see "802.1X overview," "Configuring 802.1X," and "Configuring MAC authentication."

Procedure

1. Enter system view.

system-view

2. Enable global open authentication mode.

port-security authentication open global

By default, global open authentication mode is disabled.

3. Enter interface view.

interface interface-type interface-number

4. Enable open authentication mode on the port.

port-security authentication open

By default, open authentication mode is disabled on a port.

Applying a NAS-ID profile to port security

About this task

By default, the device sends its device name in the NAS-Identifier attribute of all RADIUS requests.

A NAS-ID profile enables you to send different NAS-Identifier attribute strings in RADIUS requests from different VLANs. The strings can be organization names, service names, or any user categorization criteria, depending on the administrative requirements.

For example, map the NAS-ID companyA to all VLANs of company A. The device will send companyA in the NAS-Identifier attribute for the RADIUS server to identify requests from any Company A users.

Restrictions and guidelines

You can apply a NAS-ID profile to port security globally or on a port. On a port, the device selects a NAS-ID profile in the following order:

1. The port-specific NAS-ID profile.

2. The NAS-ID profile applied globally.

If no NAS-ID profile is applied or no matching binding is found in the selected profile, the device uses the device name as the NAS-ID.

For more information about the NAS-ID profile configuration, see "Configuring AAA."

Procedure

1. Enter system view.

system-view

2. Apply a NAS-ID profile.

¡ Apply a NAS-ID profile globally.

port-security nas-id-profile profile-name

¡ Execute the following commands in sequence to apply a NAS-ID profile to an interface:

interface interface-type interface-number

port-security nas-id-profile profile-name

By default, no NAS-ID profile is applied in system view or in interface view.

Enabling the escape critical VSI feature for 802.1X and MAC authentication users

About this task

The escape critical VSI feature operates on VXLAN networks. It enables 802.1X and MAC authentication users to escape the authentication failure that occurs because the RADIUS server is malfunctioning.

You can enable this feature temporarily to prevent 802.1X and MAC authentication service interruption while you are troubleshooting a malfunctioning RADIUS server.

After the escape critical VSI feature is enabled on a port, the device performs the following operations when 802.1X or MAC authentication is triggered for a user:

1. Dynamically creates an Ethernet service instance that matches the user's access VLAN and MAC address on the access port.

2. Maps the Ethernet service instance to the 802.1X or MAC authentication critical VSI on the port.

The user can then come online without authentication and access resources in the VXLAN associated with the critical VSI.

The escape critical VSI feature does not affect 802.1X or MAC authentication users that have been online before this feature is enabled.

Restrictions and guidelines

For the escape critical VSI feature to work correctly on a port, make sure the port does not have the following settings:

· Web authentication.

· Guest, Auth-Fail, or critical VLAN for 802.1X authentication.

· Guest or critical VLAN for MAC authentication.

You can enable or disable this feature globally on all ports or on a per-port basis.

If the mac-authentication critical vsi critical-vsi-name url-user-logoff command is used in conjunction with this feature, MAC authentication users that have been assigned authorization URLs on the port will be logged off. For more information, see "Configuring MAC authentication."

When you disable the escape critical VSI both globally and on a port, the device logs off the users in the critical VSIs for 802.1X and MAC authentication on that port. The users must perform authentication to come online again on that port.

The escape critical VSI feature does not take effect on a new 802.1X or MAC authentication user if any of the following conditions exists:

· The 802.1X client and the device use different EAP message handling methods.

· 802.1X MAC address binding is enabled on the user's access port, but the MAC address of the 802.1X user is not bound to that port.

· The user's MAC address is an all-zero, all-F, or multicast MAC address.

Prerequisites

Before you enable the escape critical VSI feature on a port, configure an 802.1X critical VSI and a MAC authentication critical VSI on that port. For more information about critical VSI configuration, see "Configuring 802.1X" and "Configuring MAC authentication."

Procedure

1. Enter system view.

system-view

2. Enable the escape critical VSI feature.

¡ Enable the global escape critical VSI feature.

port-security global escape critical-vsi

¡ Execute the following commands in sequence to enable the escape critical VSI feature on a port:

interface interface-type interface-number

port-security escape critical-vsi

By default, the escape critical VSI feature is disabled.

Configuring the trigger order for authentication methods on a port

About this task

This feature takes effect only on ports with triple authentication enabled. Triple authentication allows Web authentication, MAC authentication, and 802.1X authentication to be enabled concurrently on a Layer 2 port for user access. Different types of endpoint packets trigger different types of authentication first. For more information, see "Configuring triple authentication."

To enable any endpoint packets to trigger MAC authentication first, use this feature.

A port can run authentication processes concurrently for multiple authentication methods. The failure of one authentication does not affect the processes for other authentication methods. However, if an endpoint passes one authentication on a port, the device handles processes for other authentication methods on the port as follows:

· If the endpoint passes MAC authentication, the device generates a MAC authentication user entry on the port and continues to perform 802.1X authentication for the endpoint on the port. However, the device cannot continue Web authentication for the endpoint on the port.

¡ If the endpoint passes 802.1X authentication after MAC authentication, the device generates an 802.1X user entry for the endpoint on the port. The 802.1X user entry overwrites the MAC authentication user entry.

¡ If the endpoint does not pass 802.1X authentication after MAC authentication, the MAC authentication user entry is retained on the port. The endpoint can trigger 802.1X authentication again, but it cannot trigger Web authentication.

· If the endpoint fails MAC authentication but passes 802.1X or Web authentication, the device immediately stops all authentication methods on the port except the one the endpoint has passed. In addition, the device can no longer trigger authentication processes for the stopped authentication methods for the endpoint on the port.

Restrictions and guidelines

This feature causes users that are being authenticated to fail authentication. The users must retrigger authentication to come online. As a best practice to avoid users failing to come online, use this feature with caution.

Procedure

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Configure the trigger order for authentication methods on the port as MAC authentication, 802.1X authentication, and Web authentication.

port-security triple-auth-order mac-dot1x-web

By default, the authentication that is triggered first depends on the type of packets sent from endpoints in a triple authentication environment.

Specifying a preauthentication domain for port security users on a port

About this task

A preauthentication domain accommodates 802.1X and MAC authentication users that have not performed authentication. A preauthentication domain is applicable to the following scenarios:

· A user accesses the network for the first time. This scenario is applicable only to 802.1X and Web authentication users.

· A user fails authentication, but no Auth-Fail domain is configured.

· No server is reachable, but the critical domain is not configured.

When a port is configured with a preauthentication domain, authentication users that access that port will be assigned authorization attributes (including ACL, microsegment, VSI, and VLAN) in the preauthentication domain after they are assigned to the preauthentication domain. They can access only network resources permitted in the preauthentication domain. If they pass authentication, AAA will assign new authorization information to them.

Restrictions and guidelines

If the ACL, microsegment, VSI, and VLAN authorization settings in the current preauthentication domain have changes, the changes take effect only on users that are assigned to the preauthentication domain after the changes are made. Users that have been assigned to the preauthentication domain before the changes are made still use the original settings.

On a port, port security preauthentication domain is mutually exclusive with the following settings:

· 802.1X guest VLAN, guest VSI, Auth-Fail VLAN, Auth-Fail VSI, critical VLAN, critical VSI, critical microsegment, and critical profile settings.

· MAC authentication guest VLAN, guest VSI, critical VLAN, critical VSI, critical microsegment, and critical profile settings.

· Web authentication Auth-Fail VLAN settings.

Procedure

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Specify a preauthentication domain for port security users.

port-security pre-auth domain isp-name

By default, no preauthentication domain is specified for port security users on a port.

Specifying a domain for port security users redirected to an unavailable URL

About this task

During user authentication, if the Web server specified by the redirect URL is unavailable, users cannot be redirected to the Web authentication page on the Web server. As a result, the users cannot come online. To allow users to access the resources in an ISP domain when the redirect URL is unavailable, use this feature to specify that ISP domain for the users.

Restrictions and guidelines

This feature is applicable only to MAC authentication and Web authentication users.

This feature is mutually exclusive with the following 802.1X, MAC authentication, and Web authentication settings:

· Guest VLAN and VSI settings.

· Auth-Fail VLAN and VSI settings.

· Critical VLAN, VSI, and microsegment settings.

· Critical profile settings.

Procedure

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Specify a domain for port security users redirected to an unavailable URL.

port-security url-unavailable domain isp-name

By default, no domain is specified for port security users redirected to an unavailable URL.

Configuring static users for port access authentication

Configuring a static user range for port access authentication

About this task

Typically, administrators assign static IP addresses to dumb terminals such as printers. For such users, you can configure them as static users to facilitate flexible authentication. After you configure a dumb terminal as a static user, the device can use the static user information such as the user IP address as the username to perform authentication for the dumb terminal on the user's access interface. For this purpose, make sure 802.1X, Web authentication, or MAC authentication is enabled on the user's access interface.

The device uses the following rules to handle static users:

· If two users have different IP addresses and MAC addresses, the users are different static user. They both can come online.

· If a user that has the same MAC address as an online static user attempts to come online, the device does not trigger authentication for the new user, regardless of whether the users use the same IP address. To update the IP addresses of static users, use the port-security static-user update-ip enable command.

· If users that have the same IP address but different MAC addresses come online, the device handles the users as follows:

¡ If a MAC address has been bound to the IP address, the user that has the bound MAC address can come online. Users with other MAC addresses cannot trigger authentication to come online.

¡ If no MAC address is bound to the IP address, the device allows all users that have IP addresses belonging to a static user IP range to trigger authentication to come online.

Restrictions and guidelines

Modification to a static user range does not affect static users that are already online. The modification takes effect only on static users that will come online.

In the public network or the same VPN instance, the IP address ranges for all static user ranges cannot overlap.

When the usernames of static users are their IP or MAC addresses, do not enable RESTful server-assisted automatic MAC authentication user recovery. If you enable RESTful server-assisted automatic MAC authentication user recovery, the device will recover static users as MAC authentication users after the device reboots or recovers from a failure. For more information about RESTful server-assisted automatic MAC authentication user recovery, see "Configuring MAC authentication."

Procedure

1. Enter system view.

system-view

2. Configure a static user range for port access authentication.

port-security static-user { ip | ipv6 } start-ip-address [ end-ip-address ] [ vpn-instance vpn-instance-name ] [ domain isp-name | [ interface interface-type interface-number [ detect ] ] vlan vlan-id | mac mac-address | keep-online ] *

By default, no static user ranges are configured for port access authentication.

3. (Optional.) Configure the username format used by static users when they come online.

port-security static-user user-name-format { ip-address | mac-address | system-name }

By default, the username of a static user is in the format of SysnameIP, in which Sysname is the name of the access device and IP is the user IP address.

4. (Optional.) Configure the user account format when MAC addresses of static users are used as their usernames.

port-security static-user user-name-format mac-address { one-section | { six-section | three-section } delimiter { colon | hyphen } } [ uppercase ] [ password-with-mac ]

By default, the username of a static user is in the format of SysnameIP, in which Sysname is the name of the access device and IP is the user IP address.

5. (Optional.) Configure a password for static users.

port-security static-user password { cipher | simple } string

By default, no password is configured for static users.

6. (Optional.) Set the offline detect period for static users.

port-security static-user timer offline-detect time-value

By default, the offline detect period is 5 minutes for static users.

7. (Optional.) Set the interval at which the device actively sends ARP packets to trigger authentication for static users.

port-security static-user timer detect-period time-value

By default, the device actively sends ARP packets to trigger authentication for static users at intervals of 3 minutes.

Enabling static user IP update

About this task

After you use the port-security static-user command to configure an IP address range for a static user range, endpoints at IP addresses in the specified IP address range will come online as static users. If the IP address of an endpoint changes, the endpoint might send abnormal ARP packets to the access device when it comes online. The source IP address of these ARP packets does not belong to the specified IP address range. This issue triggers the device to update the IP address of the endpoint when static user IP update is enabled. After address update, the endpoint is no longer a static user. As a result, the endpoint is logged off.

By default, the device does not update IP addresses for static users when it receives ARP packets with source IP address not belonging to the specified IP address range from these users. This setting prevents the ARP packets from logging off online static users. To trace IP address changes for endpoints, you can enable static user IP update to allow the device to update the IP addresses of static users.

Restrictions and guidelines

Use static user IP update in conjunction with DHCP snooping, ARP snooping, DHCPv6 snooping, or ND snooping. To receive notifications about IP address changes from a snooping module, you must enable the corresponding snooping feature.

Procedure

1. Enter system view.

system-view

2. Enable static user IP update.

port-security static-user update-ip enable

By default, static user IP update is disabled.

Setting the maximum number of concurrent static users allowed on a port

About this task

Set the maximum number of concurrent static users on a port to prevent the system resources from being overused. When the maximum number is reached, the port denies subsequent static users.

Procedure

1. Enter system view.

system-view

2. Enter interface view.

interface interface-type interface-number

3. Set the maximum number of concurrent static users allowed on the port.

port-security static-user max-user max-number

By default, a port supports a maximum of 4294967295 concurrent static users.

Specifying an ACL to match the MAC addresses of static users

About this task

Typically, endpoints that match static user IP ranges come online as static users. However, the device recognizes the endpoints as MAC authentication users instead of static users in the following situations:

· The first packet sent by an endpoint is a Layer 2 packet that does not contain an IP address. In this situation, the packet triggers MAC authentication first.

· An endpoint has both IPv4 and IPv6 addresses and the first packet sent by the endpoint is an IPv6 packet, but only static user IPv4 ranges are configured on the device. In this situation, the packet triggers MAC authentication first.

To resolve the issues, configure this feature to use MAC address as the criterion to match static users. With this feature, the device allows users that match the specified ACL to trigger authentication and come online only as static users. The users cannot trigger other authentication processes.

Restrictions and guidelines

The specified ACL must be a Layer 2 ACL. The ACL can contain only permit rules with the source MAC range criteria.

Procedure

1. Enter system view.

system-view

2. Specify an ACL to match the MAC addresses of static users.

port-security static-user match-mac acl acl-number

By default, no ACL is specified to match the MAC addresses of static users.

Setting port security timers

About this task

Port security supports the following timers for users that have not performed authentication or that have failed authentication:

· Periodic reauthentication timer—Sets the interval at which the device initiates reauthentication for online 802.1X, Web authentication, or MAC authentication users in the specified domain.

· User aging timer—Sets the period that the device must wait before it can remove online 802.1X, Web authentication, or MAC authentication users from the specified domain.

Procedure

1. Enter system view.

system-view

2. Set a port security timer for specific users.

port-security timer { reauth-period { auth-fail-domain | preauth-domain } | user-aging { auth-fail-domain | critical-domain | preauth-domain } } time-value

By default, the period for the periodic reauthentication timer is 600 seconds and the period for the user aging timer is 23 hours.

Enabling SNMP notifications for port security

About this task

Use this feature to report critical port security events to an NMS. For port security event notifications to be sent correctly, you must also configure SNMP on the device. For more information about SNMP configuration, see Network Management and Monitoring Configuration Guide.

Procedure

1. Enter system view.

system-view

2. Enable SNMP notifications for port security.

By default, SNMP notifications are disabled for port security.

Enabling port security user logging

About this task

This feature enables the device to generate logs about port security users and send the logs to the information center. For the logs to be output correctly, you must also configure the information center on the device. For more information about information center configuration, see Network Management and Monitoring Configuration Guide.

Restrictions and guidelines

To prevent excessive port security user log entries, use this feature only if you need to analyze abnormal port security user events.

Procedure

1. Enter system view.

system-view

2. Enable port security user logging.

port-security access-user log enable [ failed-authorization | mac-learning | violation | vlan-mac-limit ] *

By default, port security user logging is disabled.

If you do not specify any parameters, this command enables all types of port security user logs.

Display and maintenance commands for port security

Execute display commands in any view:

Task	Command
Display the port security configuration, operation information, and statistics.	display port-security [ interface interface-type interface-number ]
Display entries for online port security access users.	display port-security access-user [ m-lag [ local \| peer ] ] [ access-type { dot1x \| mac-auth \| web-auth \| static } \| domain domain-name \| microsegment microsegment-id \| online-type { auth-fail-domain \| critical-domain \| preauth-domain \| success \| url-unavailable-domain } \| slot slot-number ] *
Display information about blocked MAC addresses.	display port-security mac-address block [ interface interface-type interface-number ] [ vlan vlan-id ] [ count ]
Display information about secure MAC addresses.	display port-security mac-address security [ interface interface-type interface-number ] [ vlan vlan-id ] [ count ]
Display static user configuration information.	display port-security static-user
Display online static users.	display port-security static-user connection [ [ m-lag [ local \| peer ] ] [ interface interface-type interface-number \| online-type { auth-fail-domain \| critical-domain \| preauth-domain \| success } \| slot slot-number \| user-name user-name ] \| { ip \| ipv6 } ip-address \| mac mac-address ]
Display port security statistics.	display port-security statistics [ slot slot-number ]
Log off online static users.	reset port-security static-user [ interface interface-type interface-number \| { ip \| ipv6 } ip-address \| mac mac-address \| online-type { auth-fail-domain \| critical-domain \| preauth-domain \| success } \| user-name user-name ]
Clear port security statistics.	reset port-security statistics

Port security configuration examples

Example: Configuring port security in autoLearn mode

Network configuration

As shown in Figure 2, configure Ten-GigabitEthernet 1/0/1 on the device to meet the following requirements:

· Accept up to 64 users without authentication.

· Be permitted to learn and add MAC addresses as sticky MAC addresses, and set the secure MAC aging timer to 30 minutes.

· Stop learning MAC addresses after the number of secure MAC addresses reaches 64. If any frame with an unknown MAC address arrives, intrusion protection starts, and the port shuts down and stays silent for 30 seconds.

Figure 2 Network diagram

‌

Procedure

# Enable port security.

<Device> system-view

[Device] port-security enable

# Set the secure MAC aging timer to 30 minutes.

[Device] port-security timer autolearn aging 30

# Set port security's limit on the number of secure MAC addresses to 64 on Ten-GigabitEthernet 1/0/1.

[Device] interface ten-gigabitethernet 1/0/1

[Device-Ten-GigabitEthernet1/0/1] port-security max-mac-count 64

# Set the port security mode to autoLearn.

[Device-Ten-GigabitEthernet1/0/1] port-security port-mode autolearn

# Configure the port to be silent for 30 seconds after the intrusion protection feature is triggered.

[Device-Ten-GigabitEthernet1/0/1] port-security intrusion-mode disableport-temporarily

[Device-Ten-GigabitEthernet1/0/1] quit

[Device] port-security timer disableport 30

Verifying the configuration

# Verify the port security configuration.

[Device] display port-security interface ten-gigabitethernet 1/0/1

Global port security parameters:

Port security : Enabled

M-LAG load sharing mode (criterion) : Distributed (local)

M-LAG member's authentication scope : Local M-LAG interfaces

M-LAG member configuration conflict : Unknown

AutoLearn aging time : 30 min

Disableport timeout : 30 sec

Blockmac timeout : 180 sec

MAC move : Denied

Authorization fail : Online

NAS-ID profile : Not configured

Dot1x-failure trap : Disabled

Dot1x-logon trap : Disabled

Dot1x-logoff trap : Disabled

Intrusion trap : Disabled

Address-learned trap : Disabled

Mac-auth-failure trap : Disabled

Mac-auth-logon trap : Disabled

Mac-auth-logoff trap : Disabled

Open authentication : Disabled

Traffic-statistics : Disabled

User aging period for preauth domain : 82800 sec

User aging period for Auth-Fail domain : 82800 sec

User aging period for critical domain : 82800 sec

Reauth period for preauth domain : 600 sec

Reauth period for Auth-Fail domain : 600 sec

OUI value list :

Index : 1 Value : 123401

Ten-GigabitEthernet1/0/1 is link-up

Port mode : autoLearn

Pre-auth domain : Not configured

URL-unavailable domain : Not configured

NeedToKnow mode : Disabled

Intrusion protection mode : DisablePortTemporarily

Strict intrusion protection : Disabled

Security MAC address attribute

Learning mode : Sticky

Aging type : Periodical

Max secure MAC addresses : 64

Current secure MAC addresses : 0

Authorization : Permitted

NAS-ID profile : Not configured

Free VLANs : Not configured

Open authentication : Disabled

MAC-move VLAN check bypass : Disabled

The port allows for MAC address learning, and you can view the number of learned MAC addresses in the Current secure MAC addresses field.

# Display additional information about the learned MAC addresses.

[Device] interface ten-gigabitethernet 1/0/1

[Device-Ten-GigabitEthernet1/0/1] display this

interface Ten-GigabitEthernet1/0/1

port-security max-mac-count 64

port-security port-mode autolearn

port-security mac-address security sticky 0002-0000-0015 vlan 1

port-security mac-address security sticky 0002-0000-0014 vlan 1

port-security mac-address security sticky 0002-0000-0013 vlan 1

port-security mac-address security sticky 0002-0000-0012 vlan 1

port-security mac-address security sticky 0002-0000-0011 vlan 1

[Device-Ten-GigabitEthernet1/0/1] quit

# Verify that the port security mode changes to secure after the number of MAC addresses learned by the port reaches 64.

[Device] display port-security interface ten-gigabitethernet 1/0/1

# Verify that the port will be disabled for 30 seconds after it receives a frame with an unknown MAC address. (Details not shown.)

# After the port is re-enabled, delete several secure MAC addresses.

[Device] undo port-security mac-address security sticky 0002-0000-0015 vlan 1

[Device] undo port-security mac-address security sticky 0002-0000-0014 vlan 1

...

# Verify that the port security mode of the port changes to autoLearn, and the port can learn MAC addresses again. (Details not shown.)

Example: Configuring port security in userLoginWithOUI mode

Network configuration

As shown in Figure 3, a client is connected to the device through Ten-GigabitEthernet 1/0/1. The device authenticates the client with a RADIUS server in ISP domain sun. If the authentication succeeds, the client is authorized to access the Internet.

· The RADIUS server at 192.168.1.2 acts as the primary authentication server and the secondary accounting server. The RADIUS server at 192.168.1.3 acts as the secondary authentication server and the primary accounting server. The shared key for authentication is name, and the shared key for accounting is money.

· All users use the authentication, authorization, and accounting methods of ISP domain sun.

· The RADIUS server response timeout time is 5 seconds. The maximum number of RADIUS packet retransmission attempts is 5. The device sends real-time accounting packets to the RADIUS server at 15-minute intervals, and sends usernames without domain names to the RADIUS server.

Configure Ten-GigabitEthernet 1/0/1 to allow only one 802.1X user and a user that uses one of the specified OUI values to be authenticated.

Figure 3 Network diagram

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Procedure

The following configuration steps cover some AAA/RADIUS configuration commands. For more information about the commands, see Security Command Reference.

Make sure the host and the RADIUS server can reach each other.

1. Configure AAA:

# Configure a RADIUS scheme named radsun.

<Device> system-view

[Device] radius scheme radsun

[Device-radius-radsun] primary authentication 192.168.1.2

[Device-radius-radsun] primary accounting 192.168.1.3

[Device-radius-radsun] secondary authentication 192.168.1.3

[Device-radius-radsun] secondary accounting 192.168.1.2

[Device-radius-radsun] key authentication simple name

[Device-radius-radsun] key accounting simple money

[Device-radius-radsun] timer response-timeout 5

[Device-radius-radsun] retry 5

[Device-radius-radsun] timer realtime-accounting 15

[Device-radius-radsun] user-name-format without-domain

[Device-radius-radsun] quit

# Configure ISP domain sun.

[Device] domain sun

[Device-isp-sun] authentication lan-access radius-scheme radsun

[Device-isp-sun] authorization lan-access radius-scheme radsun

[Device-isp-sun] accounting lan-access radius-scheme radsun

[Device-isp-sun] quit

2. Configure 802.1X:

# Set the 802.1X authentication method to CHAP. By default, the authentication method for 802.1X is CHAP.

[Device] dot1x authentication-method chap

# Specify ISP domain sun as the mandatory authentication domain for 802.1X users on Ten-GigabitEthernet 1/0/1.

[Device] interface ten-gigabitethernet 1/0/1

[Device-Ten-GigabitEthernet1/0/1] dot1x mandatory-domain sun

[Device-Ten-GigabitEthernet1/0/1] quit

3. Configure port security:

# Enable port security.

[Device] port-security enable

# Add five OUI values. (You can add up to 16 OUI values. The port permits only one user matching one of the OUIs to pass authentication.)

[Device] port-security oui index 1 mac-address 1234-0100-1111

[Device] port-security oui index 2 mac-address 1234-0200-1111

[Device] port-security oui index 3 mac-address 1234-0300-1111

[Device] port-security oui index 4 mac-address 1234-0400-1111

[Device] port-security oui index 5 mac-address 1234-0500-1111

# Set the port security mode to userLoginWithOUI.

[Device] interface ten-gigabitethernet 1/0/1

[Device-Ten-GigabitEthernet1/0/1] port-security port-mode userlogin-withoui

[Device-Ten-GigabitEthernet1/0/1] quit

Verifying the configuration

# Verify that Ten-GigabitEthernet 1/0/1 allows only one 802.1X user to be authenticated.

[Device] display port-security interface ten-gigabitethernet 1/0/1

Global port security parameters:

Port security : Enabled

M-LAG load sharing mode (criterion) : Distributed (local)

M-LAG member's authentication scope : Local M-LAG interfaces

M-LAG member configuration conflict : Unknown

AutoLearn aging time : 30 min

Disableport timeout : 30 sec

Blockmac timeout : 180 sec

MAC move : Denied

Authorization fail : Online

NAS-ID profile : Not configured

Dot1x-failure trap : Disabled

Dot1x-logon trap : Disabled

Dot1x-logoff trap : Disabled

Intrusion trap : Disabled

Address-learned trap : Disabled

Mac-auth-failure trap : Disabled

Mac-auth-logon trap : Disabled

Mac-auth-logoff trap : Disabled

Open authentication : Disabled

Traffic-statistics : Disabled

User aging period for preauth domain : 82800 sec

User aging period for Auth-Fail domain : 82800 sec

User aging period for critical domain : 82800 sec

Reauth period for preauth domain : 600 sec

Reauth period for Auth-Fail domain : 600 sec

OUI value list :

Index : 1 Value : 123401

Index : 2 Value : 123402

Index : 3 Value : 123403

Index : 4 Value : 123404

Index : 5 Value : 123405

Ten-GigabitEthernet1/0/1 is link-up

Port mode : userLoginWithOUI

Pre-auth domain : Not configured

URL-unavailable domain : Not configured

NeedToKnow mode : Disabled

Intrusion protection mode : NoAction

Strict intrusion protection : Disabled

Security MAC address attribute

Learning mode : Sticky

Aging type : Periodical

Max secure MAC addresses : Not configured

Current secure MAC addresses : 1

Authorization :Permitted

NAS-ID profile : Not configured

Free VLANs : Not configured

Open authentication : Disabled

MAC-move VLAN check bypass : Disabled

# Display information about the online 802.1X user to verify 802.1X configuration.

[Device] display dot1x

# Verify that the port also allows one user whose MAC address has an OUI among the specified OUIs to pass authentication.

[Device] display mac-address interface ten-gigabitethernet 1/0/1

MAC Address VLAN ID State Port/Nickname Aging

1234-0300-0011 1 Learned XGE1/0/1 Y

Example: Configuring port security in macAddressElseUserLoginSecure mode

Network configuration

As shown in Figure 4, a client is connected to the device through Ten-GigabitEthernet 1/0/1. The device authenticates the client by a RADIUS server in ISP domain sun. If the authentication succeeds, the client is authorized to access the Internet.

Configure Ten-GigabitEthernet 1/0/1 of the device to meet the following requirements:

· Allow more than one MAC authenticated user to log on.

· For 802.1X users, perform MAC authentication first and then, if MAC authentication fails, 802.1X authentication. Allow only one 802.1X user to log on.

· Use the MAC address of each user as both the username and password for MAC authentication. The MAC addresses are in hexadecimal notation with hyphens, and letters are in upper case.

· Set the total number of MAC authenticated users and 802.1X authenticated users to 64.

· Enable NTK (ntkonly mode) to prevent frames from being sent to unknown MAC addresses.

Figure 4 Network diagram

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Procedure

Make sure the host and the RADIUS server can reach each other.

1. Configure RADIUS authentication/accounting and ISP domain settings. (See "Example: Configuring port security in userLoginWithOUI mode.")

2. Configure port security:

# Enable port security.

<Device> system-view

[Device] port-security enable

# Use the MAC address of each user as both the username and password for MAC authentication. The MAC addresses are in hexadecimal notation with hyphens, and letters are in upper case.

[Device] mac-authentication user-name-format mac-address with-hyphen uppercase

# Specify the MAC authentication domain.

[Device] mac-authentication domain sun

# Set the 802.1X authentication method to CHAP. By default, the authentication method for 802.1X is CHAP.

[Device] dot1x authentication-method chap

# Set port security's limit on the number of MAC addresses to 64 on the port.

[Device] interface ten-gigabitethernet 1/0/1

[Device-Ten-GigabitEthernet1/0/1] port-security max-mac-count 64

# Set the port security mode to macAddressElseUserLoginSecure.

[Device-Ten-GigabitEthernet1/0/1] port-security port-mode mac-else-userlogin-secure

# Specify ISP domain sun as the mandatory authentication domain for 802.1X users.

[Device-Ten-GigabitEthernet1/0/1] dot1x mandatory-domain sun

# Set the NTK mode of the port to ntkonly.

[Device-Ten-GigabitEthernet1/0/1] port-security ntk-mode ntkonly

[Device-Ten-GigabitEthernet1/0/1] quit

Verifying the configuration

# Verify the port security configuration.

[Device] display port-security interface ten-gigabitethernet 1/0/1

Global port security parameters:

Port security : Enabled

M-LAG load sharing mode (criterion) : Distributed (local)

M-LAG member's authentication scope : Local M-LAG interfaces

M-LAG member configuration conflict : Unknown

AutoLearn aging time : 30 min

Disableport timeout : 30 sec

Blockmac timeout : 180 sec

MAC move : Denied

Authorization fail : Online

NAS-ID profile : Not configured

Dot1x-failure trap : Disabled

Dot1x-logon trap : Disabled

Dot1x-logoff trap : Disabled

Intrusion trap : Disabled

Address-learned trap : Disabled

Mac-auth-failure trap : Disabled

Mac-auth-logon trap : Disabled

Mac-auth-logoff trap : Disabled

Open authentication : Disabled

Traffic-statistics : Disabled

User aging period for preauth domain : 82800 sec

User aging period for Auth-Fail domain : 82800 sec

User aging period for critical domain : 82800 sec

Reauth period for preauth domain : 600 sec

Reauth period for Auth-Fail domain : 600 sec

OUI value list

Ten-GigabitEthernet1/0/1 is link-up

Port mode : macAddressElseUserLoginSecure

Pre-auth domain : Not configured

URL-unavailable domain : Not configured

NeedToKnow mode : NeedToKnowOnly

Intrusion protection mode : NoAction

Strict intrusion protection : Disabled

Security MAC address attribute

Learning mode : Sticky

Aging type : Periodical

Max secure MAC addresses : 64

Current secure MAC addresses : 0

Authorization : Permitted

NAS-ID profile : Not configured

Free VLANs : Not configured

Open authentication : Disabled

MAC-move VLAN check bypass : Disabled

# After users pass authentication, display MAC authentication information. Verify that Ten-GigabitEthernet 1/0/1 allows multiple MAC authentication users to be authenticated.

[Device] display mac-authentication interface ten-gigabitethernet 1/0/1

Global MAC authentication parameters:

MAC authentication : Enabled

Authentication method : PAP

M-LAG member configuration conflict : Unknown

User name format : MAC address in uppercase(XX-XX-XX-XX-XX-XX)

Username : mac

Password : Not configured

MAC range accounts : 0

MAC address Mask Username

Offline detect period : 300 s

Quiet period : 180 s

Server timeout : 100 s

Reauth period : 3600 s

User aging period for critical VLAN : 1000 s

User aging period for critical VSI : 1000 s

User aging period for guest VLAN : 1000 s

User aging period for guest VSI : 1000 s

User aging period for critical microsegment: 1000 s

Temporary user aging period : 60 s

Authentication domain : sun

HTTP proxy port list : Not configured

HTTPS proxy port list : Not configured

Online MAC-auth wired users : 3

Silent MAC users:

MAC address VLAN ID From port Port index

Ten-GigabitEthernet1/0/1 is link-up

MAC authentication : Enabled

Carry User-IP : Disabled

Authentication domain : Not configured

Auth-delay timer : Disabled

Periodic reauth : Disabled

Re-auth server-unreachable : Logoff

Guest VLAN : Not configured

Guest VLAN auth-period : 30 s

Critical VLAN : Not configured

Critical voice VLAN : Disabled

Host mode : Single VLAN

Offline detection : Enabled

Authentication order : Default

User aging : Enabled

Server-recovery online-user-sync : Enabled

Guest VSI : Not configured

Guest VSI reauthentication : Enabled

Guest VSI auth-period : 30 s

Critical VSI : Not configured

Critical microsegment ID : Not configured

Critical profile : Not configured

Auto-tag feature : Disabled

VLAN tag configuration ignoring : Disabled

Max online users : 4294967295

Max online preauth-domain users : 4294967295

Max online Auth-Fail-domain users : 4294967295

Max online preauth-domain users : 4294967295

Max online Auth-Fail-domain users : 4294967295

Auth-server-unavailable escape : Disabled

Authentication attempts : successful 3, failed 7

Current online users : 3

MAC address Auth state

1234-0300-0011 Authenticated

1234-0300-0012 Authenticated

1234-0300-0013 Authenticated

# Display 802.1X authentication information. Verify that Ten-GigabitEthernet 1/0/1 allows only one 802.1X user to be authenticated.

[Device] display dot1x interface ten-gigabitethernet 1/0/1

Global 802.1X parameters:

802.1X authentication : Enabled

M-LAG member configuration conflict : Unknown

CHAP authentication : Enabled

Max-tx period : 30 s

Handshake period : 15 s

Offline detect period : 300 s

Quiet timer : Disabled

Quiet period : 60 s

Supp timeout : 30 s

Server timeout : 100 s

Reauth period : 3600 s

Unicast-trigger quiet period : 0 s

Max auth requests : 2

User aging period for Auth-Fail VLAN : 1000 s

User aging period for Auth-Fail VSI : 1000 s

User aging period for critical VLAN : 1000 s

User aging period for critical VSI : 1000 s

User aging period for guest VLAN : 1000 s

User aging period for guest VSI : 1000 s

User aging period for critical microsegment: 1000 s

EAD assistant function : Disabled

EAD timeout : 30 min

Domain delimiter : @

Online 802.1X wired users : 1

Ten-GigabitEthernet1/0/1 is link-up

802.1X authentication : Enabled

Handshake : Enabled

Handshake reply : Disabled

Handshake security : Disabled

Unicast trigger : Disabled

Periodic reauth : Disabled

Port role : Authenticator

Authorization mode : Auto

Port access control : MAC-based

Multicast trigger : Enabled

Mandatory auth domain : sun

Guest VLAN : Not configured

Auth-Fail VLAN : Not configured

Critical VLAN : Not configured

Critical voice VLAN : Disabled

Add Guest VLAN delay : Disabled

Re-auth server-unreachable : Logoff

Max online users : 4294967295

Max online preauth-domain users : 4294967295

Max online Auth-Fail-domain users : 4294967295

User IP freezing : Disabled

Reauth period : 60 s

Send Packets Without Tag : Disabled

Max Attempts Fail Number : 0

Guest VSI : Not configured

Auth-Fail VSI : Not configured

Critical VSI : Not configured

Add Guest VSI delay : Disabled

Critical microsegment ID : Not configured

Critical profile : Not configured

User aging : Enabled

Server-recovery online-user-sync : Enabled

Auth-Fail EAPOL : Disabled

Critical EAPOL : Disabled

Discard duplicate EAPOL-Start : No

Auth-server-unavailable escape : Disabled

EAPOL packets: Tx 16331, Rx 102

Sent EAP Request/Identity packets : 16316

EAP Request/Challenge packets: 6

EAP Success packets: 4

EAP Failure packets: 5

Received EAPOL Start packets : 6

EAPOL LogOff packets: 2

EAP Response/Identity packets : 80

EAP Response/Challenge packets: 6

Error packets: 0

Online 802.1X users: 1

MAC address Auth state

0002-0000-0011 Authenticated

# Verify that frames with an unknown destination MAC address, multicast address, or broadcast address are discarded. (Details not shown.)

Example: Configuring port security for M-LAG

Network configuration

As shown in Figure 5, Device A and Device B authenticate the host users to the Internet. Configure Device A and Device B as follows:

· Use RADIUS servers to perform authentication, authorization, and accounting for the users.

· Form an M-LAG system for node redundancy.

· Set the port security mode to macAddressWithRadius on their M-LAG interfaces. Set the authentication load sharing mode to distributed local mode for users attached to the M-LAG interfaces.

· To make sure the source IP address of the RADIUS packets sent for users attached to one member device does not change after a node failover, configure the following settings on each member device:

¡ Configure one source IP address for local users and one for users attached to the peer member device. On each member device, use the active and standby M-LAG virtual IP addresses as the local and peer source IP addresses of the outgoing RADIUS packets, respectively.

Figure 5 Network diagram

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Table 3 IP assignment scheme

Device	Interface	M-LAG interface	IP address
Device A (M-LAG1)	XGE1/0/1	Keepalive interface	1.1.1.2/24
	BAGG1 (XGE1/0/2)	Peer-link interface	-
	BAGG2 (XGE1/0/4)	M-LAG interface	-
	BAGG3 (XGE1/0/3)	M-LAG interface	-
	VLAN-interface 2	-	10.1.1.1/24
Device B (M-LAG2)	XGE1/0/1	Keepalive interface	1.1.1.1/24
	BAGG1 (XGE1/0/2)	Peer-link interface	-
	BAGG2 (XGE1/0/4)	M-LAG interface	-
	BAGG3 (XGE1/0/3)	M-LAG interface	-
	VLAN-interface 2	-	-

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Restrictions and guidelines

The configuration procedure in this example uses some AAA and RADIUS commands. For more information about these commands, see Security Command Reference.

The configuration procedure in this example uses some M-LAG commands. For more information about these commands, see Layer 2—LAN Switching Command Reference.

Prerequisites

Make sure the host and RADIUS servers can reach each other.

Configure the RADIUS servers and add user accounts. Make sure the RADIUS servers can provide authentication, authorization, and accounting services.

Procedure

1. Configure Device A:

¡ Configure AAA:

# Configure RADIUS scheme radsun.

<DeviceA> system-view

[DeviceA] radius scheme radsun

[DeviceA-radius-radsun] primary authentication 10.1.1.3

[DeviceA-radius-radsun] primary accounting 10.1.1.4

[DeviceA-radius-radsun] secondary authentication 10.1.1.4

[DeviceA-radius-radsun] secondary accounting 10.1.1.3

[DeviceA-radius-radsun] key authentication simple name

[DeviceA-radius-radsun] key accounting simple money

[DeviceA-radius-radsun] timer response-timeout 5

[DeviceA-radius-radsun] retry 5

[DeviceA-radius-radsun] timer realtime-accounting 15

[DeviceA-radius-radsun] user-name-format without-domain

# Specify 10.1.1.1 as the source IP address of outgoing RADIUS packets for users attached to the local M-LAG interfaces. Specify 10.1.1.2 as the source IP address of outgoing RADIUS packets for users attached to the peer M-LAG interfaces.

[DeviceA-radius-radsun] nas-ip m-lag local 10.1.1.1

[DeviceA-radius-radsun] nas-ip m-lag peer 10.1.1.2

[DeviceA-radius-radsun] quit

# Configure ISP domain sun.

[DeviceA] domain sun

[DeviceA-isp-sun] authentication lan-access radius-scheme radsun

[DeviceA-isp-sun] authorization lan-access radius-scheme radsun

[DeviceA-isp-sun] accounting lan-access radius-scheme radsun

[DeviceA-isp-sun] quit

¡ Configure M-LAG settings:

# Configure M-LAG system settings.

[DeviceA] m-lag system-mac 1-1-1

[DeviceA] m-lag system-number 1

[DeviceA] m-lag system-priority 123

# Configure the destination and source IP addresses of keepalive packets.

[DeviceA] m-lag keepalive ip destination 1.1.1.1 source 1.1.1.2

# Configure port Ten-GigabitEthernet 1/0/1 to operate in Layer 3 mode and configure the source IP address of keepalive packets as the IP address of this port.

[DeviceA] interface ten-gigabitethernet 1/0/1

[DeviceA-Ten-GigabitEthernet1/0/1] port link-mode route

[DeviceA-Ten-GigabitEthernet1/0/1] ip address 1.1.1.2 24

[DeviceA-Ten-GigabitEthernet1/0/1] quit

# Exclude Ten-GigabitEthernet 1/0/1 (keepalive interface) from being shut down upon detection of multi-active collisions.

[DeviceA] m-lag mad exclude interface ten-gigabitethernet 1/0/1

# Create Layer 2 aggregate interface Bridge-Aggregation 1 and set the aggregation mode to dynamic.

[DeviceA] interface bridge-aggregation 1

[DeviceA-Bridge-Aggregation1] link-aggregation mode dynamic

[DeviceA-Bridge-Aggregation1] quit

# Assign Ten-GigabitEthernet 1/0/2 to aggregation group 1.

[DeviceA] interface ten-gigabitethernet 1/0/2

[DeviceA-Ten-GigabitEthernet1/0/2] port link-aggregation group 1

[DeviceA-Ten-GigabitEthernet1/0/2] quit

# Configure Layer 2 aggregate interface Bridge-Aggregation 1 as a peer-link interface.

[DeviceA] interface bridge-aggregation 1

[DeviceA-Bridge-Aggregation1] port m-lag peer-link 1

[DeviceA-Bridge-Aggregation1] quit

# On the VLAN interface, specify 10.1.1.1 as the M-LAG virtual IPv4 address in active state and specify 10.1.1.2 as the M-LAG virtual IPv4 address in standby state.

[DeviceA] vlan 2

[DeviceA-vlan2] quit

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] port m-lag virtual-ip 10.1.1.1 24 active virtual-mac 11-1-1

[DeviceA-Vlan-interface2] port m-lag virtual-ip 10.1.1.2 24 standby virtual-mac 11-1-2

[DeviceA-Vlan-interface2] quit

# Create Layer 2 aggregate interface Bridge-Aggregation 2 and set the aggregation mode to dynamic.

[DeviceA] interface bridge-aggregation 2

[DeviceA-Bridge-Aggregation2] link-aggregation mode dynamic

[DeviceA-Bridge-Aggregation2] quit

# Assign Ten-GigabitEthernet 1/0/4 to aggregation group 2.

[DeviceA] interface ten-gigabitethernet 1/0/4

[DeviceA-Ten-GigabitEthernet1/0/4] port link-aggregation group 2

[DeviceA-Ten-GigabitEthernet1/0/4] quit

# Assign Bridge-Aggregation 2 to M-LAG group 2.

[DeviceA] interface bridge-aggregation 2

[DeviceA-Bridge-Aggregation2] port m-lag group 2

[DeviceA-Bridge-Aggregation2] port access vlan 2

[DeviceA-Bridge-Aggregation2] quit

# Create Layer 2 aggregate interface Bridge-Aggregation 3 and set the aggregation mode to dynamic.

[DeviceA] interface bridge-aggregation 3

[DeviceA-Bridge-Aggregation3] link-aggregation mode dynamic

[DeviceA-Bridge-Aggregation3] quit

# Assign Ten-GigabitEthernet 1/0/3 to aggregation group 3.

[DeviceA] interface ten-gigabitethernet 1/0/3

[DeviceA-Ten-GigabitEthernet1/0/3] port link-aggregation group 3

[DeviceA-Ten-GigabitEthernet1/0/3] quit

# Assign Bridge-Aggregation 3 to M-LAG group 3.

[DeviceA] interface bridge-aggregation 3

[DeviceA-Bridge-Aggregation3] port m-lag group 3

[DeviceA-Bridge-Aggregation3] quit

¡ Configure port security settings:

# Enable port security.

[DeviceA] port-security enable

# Use the MAC address of each user as both the username and password for MAC authentication. The MAC addresses are in hyphenated hexadecimal notation, with letters in upper case.

[DeviceA] mac-authentication user-name-format mac-address with-hyphen uppercase

# Configure domain sun as the global MAC authentication domain on the device.

[DeviceA] mac-authentication domain sun

# Set the port security mode to macAddressWithRadius on Bridge-Aggregation 3.

[DeviceA] interface bridge-aggregation 3

[DeviceA-Bridge-Aggregation3] port-security port-mode mac-authentication

# Configure domain sun as the MAC authentication domain on Bridge-Aggregation 3.

[DeviceA-Bridge-Aggregation3] mac-authentication domain sun

[DeviceA-Bridge-Aggregation3] quit

2. Configure Device B:

¡ Configure AAA settings:

# Configure RADIUS scheme radsun.

<DeviceB> system-view

[DeviceB] radius scheme radsun

[DeviceB-radius-radsun] primary authentication 10.1.1.3

[DeviceB-radius-radsun] primary accounting 10.1.1.4

[DeviceB-radius-radsun] secondary authentication 10.1.1.4

[DeviceB-radius-radsun] secondary accounting 10.1.1.3

[DeviceB-radius-radsun] key authentication simple name

[DeviceB-radius-radsun] key accounting simple money

[DeviceB-radius-radsun] timer response-timeout 5

[DeviceB-radius-radsun] retry 5

[DeviceB-radius-radsun] timer realtime-accounting 15

[DeviceB-radius-radsun] user-name-format without-domain

# Specify 10.1.1.2 as the source IP address of outgoing RADIUS packets for users attached to the local M-LAG interfaces. Specify 10.1.1.1 as the source IP address of outgoing RADIUS packets for users attached to the peer M-LAG interfaces.

[DeviceB-radius-radsun] nas-ip m-lag local 10.1.1.2

[DeviceB-radius-radsun] nas-ip m-lag peer 10.1.1.1

[DeviceB-radius-radsun] quit

# Configure ISP domain sun.

[DeviceB] domain sun

[DeviceB-isp-sun] authentication lan-access radius-scheme radsun

[DeviceB-isp-sun] authorization lan-access radius-scheme radsun

[DeviceB-isp-sun] accounting lan-access radius-scheme radsun

[DeviceB-isp-sun] quit

¡ Configure M-LAG settings:

# Configure M-LAG system settings.

[DeviceB] m-lag system-mac 1-1-1

[DeviceB] m-lag system-number 2

[DeviceB] m-lag system-priority 123

# Configure the destination and source IP addresses of keepalive packets.

[DeviceB] m-lag keepalive ip destination 1.1.1.2 source 1.1.1.1

# Configure Ten-GigabitEthernet 1/0/1 to operate in Layer 3 mode and configure the source IP address of keepalive packets as the IP address of this port.

[DeviceB] interface ten-gigabitethernet 1/0/1

[DeviceB-Ten-GigabitEthernet1/0/1] port link-mode route

[DeviceB-Ten-GigabitEthernet1/0/1] ip address 1.1.1.1 24

[DeviceB-Ten-GigabitEthernet1/0/1] quit

# Exclude Ten-GigabitEthernet 1/0/1 (keepalive interface) from being shut down upon detection of multi-active collisions.

[DeviceB] m-lag mad exclude interface ten-gigabitethernet 1/0/1

# Create Layer 2 aggregate interface Bridge-Aggregation 1 and set the aggregation mode to dynamic.

[DeviceB] interface bridge-aggregation 1

[DeviceB-Bridge-Aggregation1] link-aggregation mode dynamic

[DeviceB-Bridge-Aggregation1] quit

# Assign Ten-GigabitEthernet 1/0/2 to aggregation group 1.

[DeviceB] interface ten-gigabitethernet 1/0/2

[DeviceB-Ten-GigabitEthernet1/0/2] port link-aggregation group 1

[DeviceB-Ten-GigabitEthernet1/0/2] quit

# Configure Layer 2 aggregate interface Bridge-Aggregation 1 as a peer-link interface.

[DeviceB] interface bridge-aggregation 1

[DeviceB-Bridge-Aggregation1] port m-lag peer-link 1

[DeviceB-Bridge-Aggregation1] quit

# Create VLAN-interface 2. On the VLAN interface, specify 10.1.1.2 as the M-LAG virtual IPv4 address in active state and specify 10.1.1.1 as the M-LAG virtual IPv4 address in standby state.

[DeviceB] vlan 2

[DeviceB-vlan2] quit

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] port m-lag virtual-ip 10.1.1.2 24 active virtual-mac 11-1-2

[DeviceB-Vlan-interface2] port m-lag virtual-ip 10.1.1.1 24 standby virtual-mac 11-1-1

[DeviceB-Vlan-interface2] quit

# Create Layer 2 aggregate interface Bridge-Aggregation 2 and set the aggregation mode to dynamic.

[DeviceB] interface bridge-aggregation 2

[DeviceB-Bridge-Aggregation2] link-aggregation mode dynamic

[DeviceB-Bridge-Aggregation2] quit

# Assign Ten-GigabitEthernet 1/0/4 to aggregation group 2.

[DeviceB] interface ten-gigabitethernet 1/0/4

[DeviceB-Ten-GigabitEthernet1/0/4] port link-aggregation group 2

[DeviceB-Ten-GigabitEthernet1/0/4] quit

# Assign Bridge-Aggregation 2 to M-LAG group 2.

[DeviceB] interface bridge-aggregation 2

[DeviceB-Bridge-Aggregation2] port m-lag group 2

[DeviceB-Bridge-Aggregation2] port access vlan 2

[DeviceB-Bridge-Aggregation2] quit

# Create Layer 2 aggregate interface Bridge-Aggregation 3 and set the aggregation mode to dynamic.

[DeviceB] interface bridge-aggregation 3

[DeviceB-Bridge-Aggregation3] link-aggregation mode dynamic

[DeviceB-Bridge-Aggregation3] quit

# Assign Ten-GigabitEthernet 1/0/3 to aggregation group 3.

[DeviceB] interface ten-gigabitethernet 1/0/3

[DeviceB-Ten-GigabitEthernet1/0/3] port link-aggregation group 3

[DeviceB-Ten-GigabitEthernet1/0/3] quit

# Assign Bridge-Aggregation 3 to M-LAG group 3.

[DeviceB] interface bridge-aggregation 3

[DeviceB-Bridge-Aggregation3] port m-lag group 3

[DeviceB-Bridge-Aggregation3] quit

¡ Configure port security settings:

# Enable port security.

[DeviceB] port-security enable

# Use the MAC address of each user as both the username and password for MAC authentication. The MAC addresses are in hyphenated hexadecimal notation, with letters in upper case.

[DeviceB] mac-authentication user-name-format mac-address with-hyphen uppercase

# Configure domain sun as the global MAC authentication domain on the device.

[DeviceB] mac-authentication domain sun

# Set the port security mode to macAddressWithRadius on Layer 2 aggregate interface Bridge-Aggregation 3.

[DeviceB] interface bridge-aggregation 3

[DeviceB-Bridge-Aggregation3] port-security port-mode mac-authentication

# Configure domain sun as the MAC authentication domain on Bridge-Aggregation 3.

[DeviceB-Bridge-Aggregation3] mac-authentication domain sun

[DeviceB-Bridge-Aggregation3] quit

3. Configure Device C:

# Create Layer 2 aggregate interface Bridge-Aggregation 1 and set the aggregation mode to dynamic.

<DeviceC> system-view

[DeviceC] interface bridge-aggregation 1

[DeviceC-Bridge-Aggregation1] link-aggregation mode dynamic

[DeviceC-Bridge-Aggregation1] quit

# Assign Ten-GigabitEthernet 1/0/1 and Ten-GigabitEthernet 1/0/2 to aggregation group 1.

[DeviceC] interface range ten-gigabitethernet 1/0/1 to ten-gigabitethernet 1/0/2

[DeviceC-if-range] port link-aggregation group 1

[DeviceC-if-range] quit

4. Configure Device D:

# Create Layer 2 aggregate interface Bridge-Aggregation 1 and set the aggregation mode to dynamic.

<DeviceD> system-view

[DeviceD] interface bridge-aggregation 1

[DeviceD-Bridge-Aggregation1] link-aggregation mode dynamic

[DeviceD-Bridge-Aggregation1] quit

# Assign Ten-GigabitEthernet 1/0/1 and Ten-GigabitEthernet 1/0/2 to aggregation group 1.

[DeviceD] interface range ten-gigabitethernet 1/0/1 to ten-gigabitethernet 1/0/2

[DeviceD-if-range] port link-aggregation group 1

[DeviceD-if-range] quit

Verifying the configuration

1. On Device A:

# Display M-LAG summary information on Device A to verify that Device A and Device B have formed an M-LAG system.

[DeviceA] display m-lag summary

Flags: A -- Aggregate interface down, B -- No peer M-LAG interface configured

C -- Configuration consistency check failed

Peer-link interface: BAGG1

Peer-link interface state (cause): UP

Keepalive link state (cause): UP

M-LAG interface information

M-LAG IF M-LAG group Local state (cause) Peer state Remaining down time(s)

BAGG2 2 UP UP -

BAGG3 3 UP UP -

# Display port security settings on Device A.

[DeviceA] display port-security interface bridge-aggregation 3

Global port security parameters:

Port security : Enabled

M-LAG load sharing mode (criterion) : Distributed (local)

M-LAG member's authentication scope : Local M-LAG interfaces

M-LAG member configuration conflict : Not conflicted

AutoLearn aging time : 0 min

Disableport timeout : 20 sec

Blockmac timeout : 180 sec

MAC move : Denied

Authorization fail : Online

NAS-ID profile : Not configured

Dot1x-failure trap : Disabled

Dot1x-logon trap : Disabled

Dot1x-logoff trap : Disabled

Intrusion trap : Disabled

Address-learned trap : Disabled

Mac-auth-failure trap : Disabled

Mac-auth-logon trap : Disabled

Mac-auth-logoff trap : Disabled

Open authentication : Disabled

Traffic-statistics : Enabled

User aging period for preauth domain : 82800 sec

User aging period for Auth-Fail domain : 82800 sec

User aging period for critical domain : 82800 sec

Reauth period for preauth domain : 600 sec

Reauth period for Auth-Fail domain : 600 sec

OUI value list :

Bridge-Aggregation3 is link-up

Port mode : macAuthentication

Pre-auth domain : Not configured

URL-unavailable domain : Not configured

NeedToKnow mode : Disabled

Intrusion protection mode : NoAction

Max secure MAC addresses : Not configured

Authorization : Permitted

NAS-ID profile : Not configured

Free VLANs : Not configured

Open authentication : Disabled

MAC-move VLAN check bypass : Disabled

# After users pass authentication, display MAC authentication information on Device A.

[DeviceA] display mac-authentication interface bridge-aggregation 3

Global MAC authentication parameters:

MAC authentication : Enabled

Authentication method : CHAP

M-LAG member configuration conflict : Not conflicted

Username format : MAC address in lowercase(xxxxxxxxxxxx)

Username : mac

Password : Not configured

MAC range accounts : 0

MAC address Mask Username

Offline detect period : 60 s

Quiet period : 60 s

Server timeout : 100 s

Reauth period : 3600 s

User aging period for critical VLAN : 1000 s

User aging period for critical VSI : 1000 s

User aging period for guest VLAN : 1000 s

User aging period for guest VSI : 1000 s

User aging period for critical microsegment: 1000 s

Temporary user aging period : 60 s

Authentication domain : test

HTTP proxy port list : Not configured

HTTPS proxy port list : Not configured

Max number of silent MACs : 1024 (per slot)

Online MAC-auth wired users : 10

Silent MAC users:

MAC address VLAN ID From port Port index

Bridge-Aggregation3 is link-up

MAC authentication : Enabled

Carry User-IP : Disabled

Authentication domain : test

Auth-delay timer : Disabled

Periodic reauth : Disabled

Re-auth server-unreachable : Logoff

Guest VLAN : Not configured

Guest VLAN reauthentication : Enabled

Guest VLAN auth-period : 30 s

Critical VLAN : Not configured

Critical voice VLAN : Disabled

Host mode : Single VLAN

Offline detection : Enabled

Authentication order : Default

User aging : Enabled

Server-recovery online-user-sync : Disabled

Guest VSI : Not configured

Guest VSI reauthentication : Enabled

Guest VSI auth-period : 30 s

Critical VSI : Not configured

Critical microsegment ID : Not configured

Critical profile : Not configured

URL user logoff : No

Auto-tag feature : Disabled

VLAN tag configuration ignoring : Disabled

Max online users : 4294967295

Max online preauth-domain users : 4294967295

Max online Auth-Fail-domain users : 4294967295

Auth-server-unavailable escape : Disabled

Authentication attempts : successful 6, failed 3174

Current online users : 10

MAC address Auth state

0000-0000-0001 Authenticated

0000-0000-0002 Authenticated

0000-0000-0003 Authenticated

0000-0000-0004 Authenticated

0000-0000-0005 Authenticated

0000-0000-0006 Authenticated

0000-0000-0007 Authenticated

0000-0000-0008 Authenticated

0000-0000-0009 Authenticated

0000-0000-000a Authenticated

2. On Device B:

# Display M-LAG summary information on Device B to verify that Device A and Device B have formed an M-LAG system.

[DeviceB] display m-lag summary

Flags: A -- Aggregate interface down, B -- No peer M-LAG interface configured

C -- Configuration consistency check failed

Peer-link interface: BAGG1

Peer-link interface state (cause): UP

Keepalive link state (cause): UP

M-LAG interface information

M-LAG IF M-LAG group Local state (cause) Peer state Remaining down time(s)

BAGG2 2 UP UP -

BAGG3 3 UP UP -

# Display port security settings on Device B.

[DeviceB]display port-security interface bridge-aggregation 3

Global port security parameters:

Port security : Enabled

M-LAG load sharing mode (criterion) : Distributed (local)

M-LAG member's authentication scope : Local M-LAG interfaces

M-LAG member configuration conflict : Not conflicted

AutoLearn aging time : 0 min

Disableport timeout : 20 sec

Blockmac timeout : 180 sec

MAC move : Denied

Authorization fail : Online

NAS-ID profile : Not configured

Dot1x-failure trap : Disabled

Dot1x-logon trap : Disabled

Dot1x-logoff trap : Disabled

Intrusion trap : Disabled

Address-learned trap : Disabled

Mac-auth-failure trap : Disabled

Mac-auth-logon trap : Disabled

Mac-auth-logoff trap : Disabled

Open authentication : Disabled

Traffic-statistics : Enabled

User aging period for preauth domain : 82800 sec

User aging period for Auth-Fail domain : 82800 sec

User aging period for critical domain : 82800 sec

Reauth period for preauth domain : 600 sec

Reauth period for Auth-Fail domain : 600 sec

OUI value list :

Bridge-Aggregation3 is link-up

Port mode : macAuthentication

Pre-auth domain : Not configured

URL-unavailable domain : Not configured

NeedToKnow mode : Disabled

Intrusion protection mode : NoAction

Max secure MAC addresses : Not configured

Authorization : Permitted

NAS-ID profile : Not configured

Free VLANs : Not configured

Open authentication : Disabled

MAC-move VLAN check bypass : Disabled

# After users pass authentication, display MAC authentication information on Device B. Verify that Device B and Device A have the same user authentication information.

[DeviceB] display mac-authentication interface bridge-aggregation 3

Global MAC authentication parameters:

MAC authentication : Enabled

Authentication method : CHAP

M-LAG member configuration conflict : Not conflicted

Username format : MAC address in lowercase(xxxxxxxxxxxx)

Username : mac

Password : Not configured

MAC range accounts : 0

MAC address Mask Username

Offline detect period : 60 s

Quiet period : 60 s

Server timeout : 100 s

Reauth period : 3600 s

User aging period for critical VLAN : 1000 s

User aging period for critical VSI : 1000 s

User aging period for guest VLAN : 1000 s

User aging period for guest VSI : 1000 s

User aging period for critical microsegment: 1000 s

Temporary user aging period : 60 s

Authentication domain : test

HTTP proxy port list : Not configured

HTTPS proxy port list : Not configured

Max number of silent MACs : 1024 (per slot)

Online MAC-auth wired users : 10

Silent MAC users:

MAC address VLAN ID From port Port index

Bridge-Aggregation3 is link-up

MAC authentication : Enabled

Carry User-IP : Disabled

Authentication domain : test

Auth-delay timer : Disabled

Periodic reauth : Disabled

Re-auth server-unreachable : Logoff

Guest VLAN : Not configured

Guest VLAN reauthentication : Enabled

Guest VLAN auth-period : 30 s

Critical VLAN : Not configured

Critical voice VLAN : Disabled

Host mode : Single VLAN

Offline detection : Enabled

Authentication order : Default

User aging : Enabled

Server-recovery online-user-sync : Disabled

Guest VSI : Not configured

Guest VSI reauthentication : Enabled

Guest VSI auth-period : 30 s

Critical VSI : Not configured

Critical microsegment ID : Not configured

Critical profile : Not configured

URL user logoff : No

Auto-tag feature : Disabled

VLAN tag configuration ignoring : Disabled

Max online users : 4294967295

Max online preauth-domain users : 4294967295

Max online Auth-Fail-domain users : 4294967295

Max online preauth-domain users : 4294967295

Max online Auth-Fail-domain users : 4294967295

Auth-server-unavailable escape : Disabled

Authentication attempts : successful 20, failed 3099

Current online users : 10

MAC address Auth state

0000-0000-0001 Authenticated

0000-0000-0002 Authenticated

0000-0000-0003 Authenticated

0000-0000-0004 Authenticated

0000-0000-0005 Authenticated

0000-0000-0006 Authenticated

0000-0000-0007 Authenticated

0000-0000-0008 Authenticated

0000-0000-0009 Authenticated

0000-0000-000a Authenticated

Troubleshooting port security

Cannot set the port security mode

Symptom

Cannot set the port security mode for a port.

Analysis

For a port operating in a port security mode other than noRestrictions, you cannot change the port security mode by using the port-security port-mode command.

Solution

To resolve the issue:

1. Set the port security mode to noRestrictions.

[Device-Ten-GigabitEthernet1/0/1] undo port-security port-mode

2. Set a new port security mode for the port, for example, autoLearn.

[Device-Ten-GigabitEthernet1/0/1] port-security port-mode autolearn

3. If the issue persists, contact H3C Support.

Cannot configure secure MAC addresses

Symptom

Cannot configure secure MAC addresses.

Analysis

No secure MAC address can be configured on a port operating in a port security mode other than autoLearn.

Solution

To resolve the issue:

1. Set the port security mode to autoLearn.

[Device-Ten-GigabitEthernet1/0/1] undo port-security port-mode

[Device-Ten-GigabitEthernet1/0/1] port-security max-mac-count 64

[Device-Ten-GigabitEthernet1/0/1] port-security port-mode autolearn

[Device-Ten-GigabitEthernet1/0/1] port-security mac-address security 1-1-2 vlan 1

2. If the issue persists, contact H3C Support.

09-Security Configuration Guide

Configuring port security

NTK

Intrusion protection

Authentication load sharing modes in M-LAG environments

Restrictions and guidelines: Port security configuration

Enabling port security

Prerequisites

Procedure

Restrictions and guidelines

Prerequisites

Procedure

Setting port security's limit on the number of secure MAC addresses on a port

About this task

Procedure

Configuring secure MAC addresses

About this task

Restrictions and guidelines

Procedure

Configuring intrusion protection

About this task

Restrictions and guidelines

Procedure

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Restrictions and guidelines

Procedure

Ignoring authorization information from the server

About this task

Procedure

Configuring MAC move

Restrictions and guidelines

Procedure

About this task

Procedure

About the authorization-fail-offline feature

Procedure

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Restrictions and guidelines

Procedure

Enabling the escape critical VSI feature for 802.1X and MAC authentication users

Restrictions and guidelines

Prerequisites

Procedure

About this task

Restrictions and guidelines

Procedure

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Restrictions and guidelines

Procedure

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Restrictions and guidelines

Procedure

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Restrictions and guidelines

Procedure

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Restrictions and guidelines

Procedure

Setting the maximum number of concurrent static users allowed on a port

About this task

Procedure

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Restrictions and guidelines

Procedure

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Procedure

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Procedure

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Restrictions and guidelines

Procedure

Network configuration

Procedure

Verifying the configuration

Network configuration

Procedure

Verifying the configuration

Example: Configuring port security in macAddressElseUserLoginSecure mode