The expected bandwidth is an informational parameter used only by higher-layer protocols for calculation. You cannot adjust the actual bandwidth of an interface by using this command.

Examples

# Set the expected bandwidth to 10000 kbps for Layer 2 aggregate interface Bridge-Aggregation 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] bandwidth 10000

default

Use default to restore the default settings for an aggregate interface.

Syntax

default

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Usage guidelines

CAUTION:

The default command might interrupt ongoing network services. Make sure you are fully aware of the impacts of this command when you execute it on a live network.

This command might fail to restore the default settings for some commands for reasons such as command dependencies and system restrictions. Use the display this command in interface view to identify these commands, and then use their undo forms or follow the command reference to restore their default settings. If your restoration attempt still fails, follow the error message instructions to resolve the problem.

Examples

# Restore the default settings for Layer 2 aggregate interface 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] default

description

Use description to configure the description of an interface.

Use undo description to restore the default.

Syntax

description text

undo description

Default

The description of an interface is interface-name Interface. For example, the default description of Bridge-Aggregation 1 is Bridge-Aggregation1 Interface.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

text: Specifies a description, a case-sensitive string of 1 to 255 characters.

Examples

# Configure the description as connect to the lab for Layer 2 aggregate interface Bridge-Aggregation 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] description connect to the lab

display interface

Use display interface to display aggregate interface information.

Syntax

display interface [ bridge-aggregation [ interface-number ] ] [ brief [ description | down ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

bridge-aggregation: Specifies Layer 2 aggregate interfaces.

interface-number: Specifies an existing aggregate interface number.

brief: Displays brief interface information. If you do not specify this keyword, the command displays detailed interface information.

description: Displays complete interface descriptions. If you do not specify this keyword, the command displays only the first 25 characters of each interface description.

down: Displays information about interfaces in down state and the causes for the down state. If you do not specify this keyword, the command displays information about interfaces in all states.

Usage guidelines

If you do not specify an aggregate interface type, the command displays information about all interfaces.

If you specify an aggregate interface type but do not specify an interface number, the command displays information about all aggregate interfaces of the specified type.

Examples

# Display detailed information about Layer 2 aggregate interface Bridge-Aggregation 1.

<Sysname> display interface bridge-aggregation 1

Bridge-Aggregation1

Current state: UP

Line protocol state: UP

IP packet frame type: Ethernet II, hardware address: 000f-e207-f2e0

Description: Bridge-Aggregation1 Interface

Bandwidth: 1000 kbps

Unknown-speed mode, unknown-duplex mode

Link speed type is autonegotiation, link duplex type is autonegotiation

PVID: 1

Port link-type: Access

Tagged VLANs: None

UnTagged VLANs: 1

Last clearing of counters: Never

Last 300 seconds input: 6900 packets/sec 885160 bytes/sec 0%

Last 300 seconds output: 3150 packets/sec 404430 bytes/sec 0%

Input (total): 5364747 packets, 686688416 bytes

2682273 unicasts, 1341137 broadcasts, 1341337 multicasts, 0 pauses

Input (normal): 5364747 packets, 686688416 bytes

2682273 unicasts, 1341137 broadcasts, 1341337 multicasts, 0 pauses

Input: 0 input errors, 0 runts, 0 giants, 0 throttles

0 CRC, 0 frame, 0 overruns, - aborts

- ignored, - parity errors

Output (total): 1042508 packets, 133441832 bytes

1042306 unicasts, 0 broadcasts, 202 multicasts, - pauses

Output (normal): 1042508 packets, 133441832 bytes

1042306 unicasts, 0 broadcasts, 202 multicasts, 0 pauses

Output: 0 output errors, - underruns, - buffer failures

0 aborts, 0 deferred, 0 collisions, 0 late collisions

- lost carrier, - no carrier

# Display brief information about Layer 2 aggregate interface Bridge-Aggregation 1.

<Sysname> display interface bridge-aggregation 1 brief

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Speed: (a) – auto

Duplex: (a)/A - auto; H - half; F - full

Type: A - access; T - trunk; H - hybrid

Interface Link Speed Duplex Type PVID Description

BAGG1 DOWN auto A A 1

Table 1 Command output

Field	Description
Bridge-Aggregation1	Layer 2 aggregate interface name.
Current state	Physical link state of the interface: · Administratively DOWN—The interface has been shut down by using the shutdown command. · DOWN—The interface is administratively up, but its physical state is down (possibly because no physical link exists or the link has failed). · UP—The interface is both administratively and physically up.
IP packet frame type	IPv4 packet framing format.
IPv6 packet frame type	IPv6 packet framing format.
Description	Description of the interface.
Bandwidth	Expected bandwidth of the interface. This field is not displayed when the bandwidth is 0 kbps.
Port priority	Port priority of the interface.
Output queue - Urgent queuing: Size/Length/Discards	Information about the urgent output queue: · Size—Number of packets in the queue. · Length—Maximum number of packets that the queue can contain. · Discards—Number of dropped packets.
Output queue - Protocol queuing: Size/Length/Discards	Information about the protocol output queue: · Size—Number of packets in the queue. · Length—Maximum number of packets that the queue can contain. · Discards—Number of dropped packets.
Output queue - FIFO queuing: Size/Length/Discards	Information about the FIFO output queue: · Size—Number of packets in the queue. · Length—Maximum number of packets that the queue can contain. · Discards—Number of dropped packets.
Unknown-speed mode, unknown-duplex mode	The interface speed and duplex mode are unknown.
Port link-type	Port link type: · Access. · Trunk. · Hybrid.
Tagged VLANs	VLAN whose packets are sent out of this interface with a tag.
Untagged VLANs	VLAN whose packets are sent out of this interface without a tag.
Last clearing of counters	Time when the reset counters interface command was last used to clear the interface statistics. This field displays Never if the reset counters interface command has never been used on the interface since device startup.
Last 300 seconds input/output rate	Average input or output rate over the last 300 seconds.
Input/Output (total)	Statistics of all packets received or sent on the interface.
Input/Output (normal)	Statistics of all normal packets received or sent on the interface.
Line protocol state	Data link layer state of the interface: · UP. · DOWN.
Maximum transmission unit	MTU of the interface.
Internet protocol processing: Disabled	The interface is not assigned an IP address and cannot process IP packets.
Internet address: ip-address/mask-length (Type)	IP address of the interface and type of the address in parentheses. Possible IP address types include: · Primary—Manually configured primary IP address. · Sub—Manually configured secondary IP address. If the interface has both primary and secondary IP addresses, the primary IP address is displayed. If the interface has only secondary IP addresses, the lowest secondary IP address is displayed. · DHCP-Allocated—DHCP allocated IP address. For more information, see DHCP client configuration in Layer 3—IP Services Configuration Guide. · BOOTP-Allocated—BOOTP allocated IP address. For more information, see BOOTP client configuration in Layer 3—IP Services Configuration Guide. · Unnumbered—IP address borrowed from another interface.
Brief information on interfaces in bridge mode	Brief information about Layer 2 interfaces.
Interface	Abbreviated interface name.
Link	Physical link state of the interface: · UP—The interface is physically up. · DOWN—The interface is physically down. · ADM—The interface has been shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command.
Speed	Speed of the interface, in bps. This field displays the (a) flag next to the speed if the speed is automatically negotiated. This field displays auto if the interface is configured to autonegotiate its speed but the autonegotiation has not started.
Duplex	Duplex mode of the interface: · A—Autonegotiation. The interface is configured to autonegotiate its duplex mode but the autonegotiation has not started. · F—Full duplex. · F(a)—Autonegotiated full duplex. · H—Half duplex. · H(a)—Autonegotiated half duplex.
Type	Link type of the interface: · A—Access. · H—Hybrid. · T—Trunk.
Protocol	Data link layer protocol state of the interface: · UP—The data link layer protocol of the interface is up. · DOWN—The data link layer protocol of the interface is down. · UP(s)—The data link layer protocol of the interface is up, but the link is an on-demand link or does not exist. The (s) attribute represents the spoofing flag. This value is typical of null interfaces and loopback interfaces.
Primary IP	Primary IP address of the interface. This field displays two hyphens (--) if the interface does not have an IP address.
Cause	Cause for the physical link state of an interface to be DOWN.

display lacp system-id

Use display lacp system-id to display the local system ID.

Syntax

display lacp system-id

Views

Any view

Predefined user roles

network-admin

network-operator

Usage guidelines

You can use the lacp system-priority command to change the LACP priority of the local system. The LACP priority value is specified in decimal format in the lacp system-priority command. However, it is displayed in hexadecimal format in the output from the display lacp system-id command.

Examples

# Display the local system ID.

<Sysname> display lacp system-id

Actor System ID: 0x8000, 0000-fc00-6504

Table 2 Command output

Field	Description
Actor System ID: 0x8000, 0000-fc00-6504	Local system ID, which contains the LACP system priority (0x8000 in this sample output) and the LACP system MAC address (0000-FC00-6504 in this sample output).

Related commands

lacp system-priority

display link-aggregation load-sharing mode

Use display link-aggregation load-sharing mode to display global or group-specific link-aggregation load sharing modes.

Syntax

display link-aggregation load-sharing mode [ interface [ bridge-aggregation interface-number ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

bridge-aggregation: Specifies Layer 2 aggregate interfaces.

interface-number: Specifies an existing aggregate interface number.

Usage guidelines

If you do not specify the interface keyword, the command displays the global link-aggregation load sharing modes.

If you specify the interface keyword, but do not specify an interface, the command displays all group-specific load sharing modes.

The bridge-aggregation keyword is available only when Layer 2 aggregate interfaces exist on the device.

Examples

# Display the global link-aggregation load sharing mode. This example displays the default setting.

<Sysname> display link-aggregation load-sharing mode

Link-aggregation load-sharing mode:

Layer 2 traffic: packet type-based sharing

Layer 3 traffic: packet type-based sharing

# Display the link-aggregation load sharing mode of Layer 2 aggregation group 1. This example displays the default setting. (This example applies to products that do not support dynamic load sharing mode.)

<Sysname> display link-aggregation load-sharing mode interface bridge-aggregation 1

Bridge-Aggregation1 load-sharing mode:

Layer 2 traffic: packet type-based sharing

Layer 3 traffic: packet type-based sharing

Table 3 Command output

Field	Description
Link-aggregation load-sharing mode	Global link-aggregation load sharing mode. By default, this field displays the link-aggregation load sharing modes for Layer 2 and Layer 3 traffic. If you have configured the global link-aggregation load sharing mode, this field displays the configured mode.
Bridge-Aggregation1 load-sharing mode	Link-aggregation load sharing mode of Layer 2 aggregation group 1. By default, this field displays the global link-aggregation load sharing modes. If you have configured a link-aggregation load sharing mode for this aggregation group, this field displays the configured mode.
Layer 2 traffic: packet type-based sharing	Default link-aggregation load sharing mode for Layer 2 traffic. By default, Layer 2 traffic is load shared based on source and destination MAC addresses.
Layer 3 traffic: packet type-based sharing	Default link-aggregation load sharing mode for Layer 3 traffic. By default, Layer 3 traffic is load shared based on source and destination IP addresses.
destination-mac address, source-mac address	User-configured link-aggregation load sharing mode. In this sample output, traffic is load shared based on source and destination MAC addresses.

‌

display link-aggregation member-port

Use display link-aggregation member-port to display detailed link aggregation information about the specified member ports.

Syntax

display link-aggregation member-port [ interface-list | auto ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface-list: Specifies a list of link aggregation member ports, in the format interface-type interface-number1 [ to interface-type interface-number2 ]. The value for the interface-number2 argument must be equal to or greater than the value for the interface-number1 argument.

auto: Specifies all link aggregation member ports that are enabled with automatic assignment.

Usage guidelines

A member port in a static aggregation group cannot obtain information about the peer group. For such member ports, the command displays the port number, port priority, and operational key of only the local end.

Examples

# Display detailed information about GigabitEthernet 1/0/1, which is a member port of a static aggregation group.

<Sysname> display link-aggregation member-port gigabitethernet 1/0/1

Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

D -- Synchronization, E -- Collecting, F -- Distributing,

G -- Defaulted, H -- Expired

GigabitEthernet1/0/1:

Aggregate Interface: Bridge-Aggregation1

Port Number: 1

Port Priority: 32768

Oper-Key: 1

# Display detailed information about GigabitEthernet 1/0/2, which is a member port of a dynamic aggregation group.

<Sysname> display link-aggregation member-port gigabitethernet 1/0/2

Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

D -- Synchronization, E -- Collecting, F -- Distributing,

G -- Defaulted, H -- Expired

GigabitEthernet1/0/2:

Aggregate Interface: Bridge-Aggregation10

Local:

Port Number: 2

Port Priority: 32768

Oper-Key: 2

Flag: {ACDEF}

Remote:

System ID: 0x8000, 000f-e267-6c6a

Port Number: 26

Port Priority: 32768

Oper-Key: 2

Flag: {ACDEF}

Received LACP Packets: 5 packet(s)

Illegal: 0 packet(s)

Sent LACP Packets: 7 packet(s)

# Display detailed information about all link aggregation member ports that are enabled with automatic assignment.

<Sysname> display link-aggregation member-port auto

Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

D -- Synchronization, E -- Collecting, F -- Distributing,

G -- Defaulted, H -- Expired

GigabitEthernet1/0/3:

Preference Aggregation Interface: Bridge-Aggregation11

Aggregate Interface: Bridge-Aggregation11

Local:

Port Number: 3

Port Priority: 32768

Oper-Key: 1

Flag: {ACDEF}

Remote:

System ID: 0x8000, a057-75a2-0100

Port Number: 3

Port Priority: 32768

Oper-Key: 1

Flag: {ACDEF}

Received LACP Packets: 3 packet(s)

Illegal: 0 packet(s)

Sent LACP Packets: 6 packet(s)

Table 4 Command output

Field	Description
Flags	LACP state flags. This field is one byte long, represented by ABCDEFGH from the least significant bit to the most significant bit. A letter appears when its bit is 1 and does not appear when its bit is 0. · A—Indicates whether LACP is active on the port. 1 indicates active. 0 indicates passive. · B—Indicates the LACP timeout interval. 1 indicates the short timeout interval. 0 indicates the long timeout interval. · C—Indicates whether the sending system considers that the link is aggregatable. 1 indicates yes. 0 indicates no. · D—Indicates whether the sending system considers that the link has been aggregated. 1 indicates yes. 0 indicates no. · E—Indicates whether the sending system considers that the link can collect frames. 1 indicates yes. 0 indicates no. · F—Indicates whether the sending system considers that the link can distribute frames. 1 indicates yes. 0 indicates no. · G—Indicates whether the RX state machine of the sending system is in default state. 1 indicates yes. 0 indicates no. · H—Indicates whether the RX state machine of the sending system is in expired state. 1 indicates yes. 0 indicates no.
Aggregate Interface	Aggregate interface to which the member port belongs.
Preferred Aggregate Interface	Aggregate interface to which you prefer to assign the member port during automatic assignment.
Local	Information about the local end.
Oper-key	Operational key.
Flag	LACP protocol state flag.
Remote	Information about the peer end.
System ID	Peer system ID, containing the LACP system priority and the LACP system MAC address.
Received LACP Packets	Total number of LACP packets received.
Illegal	Total number of illegal packets.
Sent LACP Packets	Total number of LACP packets sent.

display link-aggregation summary

Use display link-aggregation summary to display brief information about all aggregation groups.

Syntax

display link-aggregation summary

Views

Any view

Predefined user roles

network-admin

network-operator

Usage guidelines

Static link aggregation groups cannot obtain information about the peer groups. As a result, the Partner ID field displays None or nothing for a static link aggregation group.

Examples

# Display brief information about all aggregation groups.

<Sysname> display link-aggregation summary

Aggregate Interface Type:

BAGG -- Bridge-Aggregation, BLAGG –- Blade-Aggregation, RAGG -- Route-Aggregation, SCH-B – Schannel-Bundle

Aggregation Mode: S -- Static, D -- Dynamic

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Actor System ID: 0x8000, 000f-e267-6c6a

AGG AGG Partner ID Selected Unselected Individual Share

Interface Mode Ports Ports Ports Type

--------------------------------------------------------------------------------

BAGG20 D 0x8000,00e0-fcff-ff01 2 0 0 Shar

Table 5 Command output

Field	Description
Aggregate Interface Type	Aggregate interface type: BAGG—Layer 2.
Aggregation Mode	Aggregation group type: · S—Static. · D—Dynamic.
Loadsharing Type	Load sharing type: · Shar—Load-sharing. · NonS—Non-load-sharing.
Actor System ID	Local system ID, which contains the local LACP system priority and the local LACP system MAC address.
AGG Interface	Type and number of the aggregate interface.
AGG Mode	Aggregation group type.
Partner ID	System ID of the peer system, which contains the peer LACP system priority and the peer LACP system MAC address.
Selected Ports	Total number of Selected ports.
Unselected Ports	Total number of Unselected ports.
Individual Ports	Total number of Individual ports.
Share Type	Load sharing type.

display link-aggregation troubleshooting

Use display link-aggregation troubleshooting to display the aggregation states of aggregation member ports and the reason why a port was placed in Unselected state.

Syntax

display link-aggregation troubleshooting [ bridge-aggregation [ interface-number ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

bridge-aggregation: Specifies Layer 2 aggregate interfaces.

schannel-bundle: Specifies S-channel bundle interfaces.

interface-number: Specifies an existing aggregate interface by its number.

Usage guidelines

If you do not specify an aggregate interface type, the command displays information about all aggregation groups.

If you specify an aggregate interface type but do not specify an interface number, the command displays information about all aggregation groups of the specified type.

You can specify the bridge-aggregation keyword only when Layer 2 aggregate interfaces exist on the device.

Examples

# Display the aggregation states of aggregation member ports for all aggregation groups and the reason why a port was placed in Unselected state.

<Sysname> display link-aggregation troubleshooting

Aggregate Interface: Bridge-Aggregation2

Member ports:

GE1/0/2

Status: Selected

GE1/0/3

Status: Unselected

Reason: The physical or line protocol state of the port is down

Advice: Check the connection

Table 6 Command output

Field	Description
Reason	Reason why the port was placed in Unselected state.
Advice	Recommended action.

display link-aggregation verbose

Use display link-aggregation verbose to display detailed information about the aggregation groups that correspond to the specified aggregate interfaces.

Syntax

display link-aggregation verbose [ bridge-aggregation [ interface-number ] ] [ all-configuration ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

bridge-aggregation: Specifies Layer 2 aggregate interfaces.

interface-number: Specifies an existing aggregate interface by its number.

all-configuration: Specifies all member ports in aggregation groups of the specified aggregate interfaces. If you do not specify this option, this command displays detailed information about only member ports on present cards.

Usage guidelines

If you do not specify an aggregate interface type, the command displays detailed information about all aggregation groups.

If you specify an aggregate interface type but do not specify an interface number, the command displays detailed information about all aggregation groups of the specified type.

You can specify the bridge-aggregation keyword only when Layer 2 aggregate interfaces exist on the device.

This command does not display the interfaces that are enabled with automatic assignment if they have not joined an aggregation group.

Examples

# Display detailed information about Layer 2 aggregation group 10, which is a dynamic aggregation group.

<Sysname> display link-aggregation verbose bridge-aggregation 10

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Port: A -- Auto port, M -- Management port, R -- Reference port

Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

D -- Synchronization, E -- Collecting, F -- Distributing,

G -- Defaulted, H -- Expired

Aggregate Interface: Bridge-Aggregation10

Creation Mode: Manual

Aggregation Mode: Dynamic

Loadsharing Type: Shar

Management VLANs: None

System ID: 0x8000, 000f-e267-6c6a

Local:

Port Status Priority Index Oper-Key Flag

GE1/0/1 S 32768 61 2 {ACDEF}

GE1/0/2 S 32768 62 2 {ACDEF}

GE1/0/3 S 32768 63 2 {ACDEF}

Remote:

Actor Priority Index Oper-Key SystemID Flag

GE1/0/1(R) 32768 111 2 0x8000, 000f-e267-57ad {ACDEF}

GE1/0/2 32768 112 2 0x8000, 000f-e267-57ad {ACDEF}

GE1/0/3 32768 113 2 0x8000, 000f-e267-57ad {ACDEF}

# Display detailed information about Layer 2 aggregation group 20, which is a static aggregation group.

<Sysname> display link-aggregation verbose bridge-aggregation 20

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Port: A -- Auto port, M -- Management port, R -- Reference port

Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

D -- Synchronization, E -- Collecting, F -- Distributing,

G -- Defaulted, H -- Expired

Aggregate Interface: Bridge-Aggregation20

Aggregation Mode: Static

Loadsharing Type: Shar

Management VLANs: None

Port Status Priority Oper-Key

GE1/0/1(R) S 32768 1

GE1/0/2 S 32768 1

GE1/0/3 S 32768 1

Table 7 Command output

Field	Description
Loadsharing Type	Load sharing type: · Shar—Load-sharing. · NonS—Non-load-sharing.
Port Status	Port state: · Selected. · Unselected. · Individual.
Port	Port type: · Auto port—The port is enabled with automatic assignment. · Management port—The port is a management port. · Reference port—The port is a reference port.
Flags	LACP state flags. This field is one byte long, represented by ABCDEFGH from the least significant bit to the most significant bit. A letter appears when its bit is 1 and does not appear when its bit is 0. · A—Indicates whether LACP is active on the port. 1 indicates active. 0 indicates passive. · B—Indicates the LACP timeout interval. 1 indicates the short timeout interval. 0 indicates the long timeout interval. · C—Indicates whether the sending system considers that the link is aggregatable. 1 indicates yes. 0 indicates no. · D—Indicates whether the sending system considers that the link has been aggregated. 1 indicates yes. 0 indicates no. · E—Indicates whether the sending system considers that the link can collect frames. 1 indicates yes. 0 indicates no. · F—Indicates whether the sending system considers that the link can distribute frames. 1 indicates yes. 0 indicates no. · G—Indicates whether the RX state machine of the sending system is in default state. 1 indicates yes. 0 indicates no. · H—Indicates whether the RX state machine of the sending system is in expired state. 1 indicates yes. 0 indicates no.
Aggregate Interface	Name of the aggregate interface.
Creation Mode	Creation mode of the dynamic aggregate interface: · Auto. · Manual.
Aggregation Mode	Aggregation group type: · S—Static. · D—Dynamic.
Management VLANs	Management VLANs. If no management VLANs are specified, this field displays None.
System ID	Local system ID, containing the local LACP system priority and the local LACP system MAC address.
Local	Information about the local end: · Port—Port type and number. · Status—Port state, which can be Selected, Unselected, or Individual. · Priority—Port priority. · Index—Port index. · Oper-Key—Operational key. · Flag—LACP state flag. NOTE: For static aggregation groups, the Index and Flag fields are not displayed.
Remote	Information about the peer end: · Actor—Type and number of the local port. This field displays the (R) flag next to the port if its peer port is the reference port. · Priority—Priority of the peer port. · Index—Index of the peer port. · Oper-Key—Operational key of the peer port. · System ID—System ID of the peer end. · Flag—LACP state flag of the peer end.

interface bridge-aggregation

Use interface bridge-aggregation to create a Layer 2 aggregate interface and enter its view, or enter the view of an existing Layer 2 aggregate interface.

Use undo interface bridge-aggregation to delete a Layer 2 aggregate interface.

Syntax

interface bridge-aggregation interface-number

undo interface bridge-aggregation interface-number

Default

No Layer 2 aggregate interfaces exist.

Views

System view

Predefined user roles

network-admin

Parameters

interface-number: Specifies a Layer 2 aggregate interface number. The value range for the interface-number argument is 1 to 1024.

Usage guidelines

When you create a Layer 2 aggregate interface, the system automatically creates a Layer 2 aggregation group with the same number. The aggregation group operates in static aggregation mode by default.

Deleting a Layer 2 aggregate interface also deletes the Layer 2 aggregation group. At the same time, the member ports of the aggregation group, if any, leave the aggregation group.

Examples

# Create Layer 2 aggregate interface Bridge-Aggregation 1, and enter its view.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1]

jumboframe enable

Use jumboframe enable to allow the jumbo frames on an interface to pass through.

Use undo jumboframe enable to deny jumbo frames on an interface.

Use undo jumboframe enable size to restore the default.

Syntax

jumboframe enable [ size ]

undo jumboframe enable [ size ]

Default

An interface allows jumbo frames with a maximum length of 10240 bytes to pass through.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

size: Specifies the maximum length of jumbo frames, in bytes. The value range for this argument is 1522 to 10240.

Usage guidelines

If you execute this command multiple times, the most recent configuration takes effect.

Examples

# Allow jumbo frames on Layer 2 aggregate interface Bridge-Aggregation 1.

<Sysname> System-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] jumboframe enable

lacp default-selected-port disable

Use lacp default-selected-port disable to disable the default port selection action for dynamic aggregation groups.

Use undo lacp default-selected-port disable to enable the default port selection action for dynamic aggregation groups.

Syntax

lacp default-selected-port disable

undo lacp default-selected-port disable

Default

The default port selection action is enabled for dynamic aggregation groups.

Views

System view

Predefined user roles

network-admin

Usage guidelines

The default port selection action applies to dynamic aggregation groups.

This action automatically chooses the port with the lowest ID from among all up member ports as a Selected port if none of them has received LACPDUs before the LACP timeout interval expires.

After this action is disabled, a dynamic aggregation group will not have any Selected ports to forward traffic if it has not received LACPDUs before the LACP timeout interval expires.

Examples

# Disable the default port selection action.

<Sysname> system-view

[Sysname] lacp default-selected-port disable

lacp edge-port

Use lacp edge-port to configure an aggregate interface as an edge aggregate interface.

Use undo lacp edge-port to restore the default.

Syntax

lacp edge-port

undo lacp edge-port

Default

An aggregate interface does not operate as an edge aggregate interface.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Usage guidelines

Use this command on the aggregate interface that connects the device to a server if dynamic link aggregation is configured only on the device. This feature improves link reliability by enabling all member ports of the aggregation group to forward packets.

This command takes effect only on an aggregate interface corresponding to a dynamic aggregation group.

Link-aggregation traffic redirection cannot operate correctly on an edge aggregate interface.

Examples

# Configure Layer 2 aggregate interface Bridge-Aggregation 1 as an edge aggregate interface.

<Sysname> System-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] lacp edge-port

lacp mode

Use lacp mode passive to configure LACP to operate in passive mode on a port.

Use undo lacp mode to restore the default.

Syntax

lacp mode passive

undo lacp mode

Default

LACP operates in active mode on a port.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

Usage guidelines

This command takes effect only on member ports of dynamic aggregation groups.

When LACP is operating in passive mode on a local member port and its peer port, both ports cannot send LACPDUs. When LACP is operating in active mode on either end of a link, both ports can send LACPDUs.

Examples

# Configure LACP to operate in passive mode on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] lacp mode passive

lacp period short

Use lacp period short to enable the short LACP timeout interval (3 seconds) on an interface.

Use undo lacp period to restore the default.

Syntax

lacp period short

undo lacp period

Default

The LACP timeout interval is the long timeout interval (90 seconds) on an interface.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

Examples

# Enable the short LACP timeout interval (3 seconds) on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] lacp period short

lacp preempt delay

Use lacp preempt delay to set the port selection preemption delay on an aggregate interface.

Use undo lacp preempt delay to restore the default.

Syntax

lacp preempt delay delay-time

undo lacp preempt delay

Default

On an aggregate interface, the port selection preemption delay is 0 seconds, which means port selection preemption is performed without delay.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

delay-time: Sets the port selection preemption delay in seconds. The value range for this argument is 10 to 180.

Usage guidelines

When port A fails in a dynamic aggregation group, the device selects the highest priority member port, port B for example, as the new selected port. If port selection preemption is enabled and port A recovers from failure, it immediately replaces port B. This might cause packet loss if port A's link status is unstable. To avoid this issue, configure a port selection preemption delay.

Examples

# Set the port selection preemption delay to 100 seconds on an aggregate interface.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] lacp preempt delay 100

lacp preempt enable

Use lacp preempt enable to enable port selection preemption.

Use undo lacp preempt enable to disable port selection preemption.

Syntax

lacp preempt enable

undo lacp preempt enable

Default

Port selection preemption is enabled on an aggregate interface.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Usage guidelines

When port A fails in a dynamic aggregation group, the device selects the highest priority member port, port B for example, as the new selected port. If port selection preemption is enabled and port A recovers from failure, it replaces port B. If port selection preemption is disabled, port B is still selected even though port A has higher priority, and traffic loss caused by selected port preemption is reduced.

Examples

# Disable port selection preemption on an aggregate interface.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] undo lacp preempt enable

lacp select speed

Use lacp select speed to configure a dynamic aggregation group to use port speed as the prioritized criterion for reference port selection.

Use undo lacp select speed to restore the default.

Syntax

lacp select speed

undo lacp select speed

Default

Port ID is the prioritized criterion for reference port selection in a dynamic aggregation group.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Usage guidelines

CAUTION:

Changing reference port selection criteria might cause transient traffic interruption. When you use this command, make sure you understand its impact on your network.

This command enables a dynamic aggregation group to select a high-speed member port as the reference port.

You must execute this command at both ends of the aggregate link so the peer aggregation systems use the same criteria for reference port selection.

As a best practice, shut down the peer aggregate interfaces before you execute this command and bring up the interfaces after this command is executed on both of them.

This command takes effect only on dynamic aggregate interfaces. On a static aggregate interface, you can execute this command, but the setting cannot take effect.

Examples

# Specify port speed as the prioritized criterion for reference port selection on Layer 2 dynamic aggregate interface Bridge-Aggregation 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

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

[Sysname-Bridge-Aggregation1] lacp select speed

lacp system-mac

Use lacp system-mac to set the LACP system MAC address.

Use undo lacp system to restore the default.

Syntax

lacp system-mac mac-address

undo lacp system-mac

Default

The LACP system MAC address is the bridge MAC address of the device.

Views

System view

Predefined user roles

network-admin

Parameters

mac-address: Specifies a MAC address in the format of H-H-H. The MAC address cannot be an all-zero or broadcast MAC address.

Usage guidelines

All S-MLAG devices must use the same LACP system MAC address.

LACPDUs carry the LACP system MAC address configured by using this command. To identify the LACP system MAC address used by a link aggregation group, examine the System ID field in the output from the display link-aggregation verbose command.

You can configure the LACP system MAC address globally and in aggregate interface view. The global LACP system MAC address takes effect on all aggregation groups, and an aggregate-interface-specific LACP system MAC address takes precedence over the global LACP system MAC address.

Examples

# Set the LACP system MAC address to 0001-0001-0001.

<Sysname> system-view

[Sysname] lacp system-mac 1-1-1

Related commands

display link-aggregation verbose

port lacp system-mac

lacp system-number

Use lacp system-number to set the LACP system number used by the local device.

Use undo lacp system-number to restore the default.

Syntax

lacp system-number number

undo lacp system-number

Default

The LACP system number is not set.

Views

System view

Predefined user roles

network-admin

Parameters

number: Specifies a number in the range of 1 to 3.

Usage guidelines

You must assign a unique LACP system number to each S-MLAG device.

The LACP system number configured by using this command takes effect only on aggregate interfaces in S-MLAG groups. Aggregate interfaces not in S-MLAG groups do not use the configured LACP system number in LACPDUs. To view the LACP system number in LACPDUs, examine the Index field in the output from the display link-aggregation verbose command.

Examples

# Set the LACP system number to 1.

<Sysname> system-view

[Sysname] lacp system-number 1

Related commands

display link-aggregation verbose

lacp system-priority

Use lacp system-priority to set the LACP system priority.

Use undo lacp system-priority to restore the default.

Syntax

lacp system-priority priority

undo lacp system-priority

Default

The LACP system priority is 32768.

Views

System view

Predefined user roles

network-admin

Parameters

priority: Specifies the LACP system priority in the range of 0 to 65535. The smaller the value, the higher the LACP system priority.

Usage guidelines

LACPDUs carry the LACP system priority configured by using this command. To identify the LACP system priority used by a link aggregation group, examine the System ID field in the output from the display link-aggregation verbose command.

You can configure the LACP system priority globally and in aggregate interface view. The global LACP system priority takes effect on all aggregation groups, and an aggregate-interface-specific LACP system priority takes precedence over the global LACP system priority.

Member devices in an S-MLAG system must use the same LACP system priority.

Examples

# Set the LACP system priority to 64.

<Sysname> system-view

[Sysname] lacp system-priority 64

Related commands

link-aggregation port-priority

port lacp system-priority

link-aggregation auto-aggregation enable

Use link-aggregation auto-aggregation enable to enable automatic link aggregation.

Use undo link-aggregation auto-aggregation enable to disable automatic link aggregation.

Syntax

link-aggregation auto-aggregation enable

undo link-aggregation auto-aggregation enable

Default

Automatic link aggregation is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

After you enable automatic link aggregation and LLDP on two connected devices, they automatically establish a dynamic link aggregation based on the information in incoming LLDP frames. The devices each automatically create a dynamic aggregate interface and assign the redundant ports connected to the peer to the aggregation group of that interface. If you disable LLDP or automatic link aggregation on one device, that device removes the aggregation member ports from the aggregation group, but it will retain the aggregate interface. This event will not trigger member port removal actions on the peer device.

If automatic link aggregation is enabled, subinterface creation might fail on LLDP-enabled Layer 3 Ethernet interfaces. As a best practice, do not create subinterfaces on LLDP-enabled Layer 3 Ethernet interfaces.

To ensure correct operation of an automatically created aggregate interface, do not modify the configuration on the member ports of its aggregation group. Doing so might cause the member ports to be removed from the aggregation group.

For M-LAG to operate correctly, do not use this command on an M-LAG system.

On an interface, the port link-aggregation group setting takes precedence over automatic link aggregation. The interface will not be added to the aggregation group of an automatically created aggregate interface if it has been the member port of a manually created aggregate interface.

Examples

# Enable automatic link aggregation.

<Sysname> system

[Sysname] link-aggregation auto-aggregation enable

Related commands

lldp enable

lldp global enable

port link-aggregation group

link-aggregation bfd

Use link-aggregation bfd to enable BFD for an aggregation group.

Use undo link-aggregation bfd to disable BFD for an aggregation group.

Syntax

link-aggregation bfd ipv4 source ipv4-address destination ipv4-address

undo link-aggregation bfd [ ipv4 ]

Default

BFD is disabled for an aggregation group.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

ipv4: Specifies IPv4 BFD.

source ip-address: Specifies the unicast source IP address of BFD sessions. The source IP address cannot be 0.0.0.0.

destination ip-address: Specifies the unicast destination IP address of BFD sessions. The destination IP address cannot be 0.0.0.0.

ipv4-address: Specifies an IPv4 address. The address cannot be 0.0.0.0.

Usage guidelines

Make sure the source and destination IP addresses are reversed between the two ends of an aggregate link. For example, if you execute link-aggregation bfd ipv4 source 1.1.1.1 destination 2.2.2.2 at the local end, execute link-aggregation bfd ipv4 source 2.2.2.2 destination 1.1.1.1 at the peer end. The source and destination IP addresses cannot be the same.

The BFD parameters configured on an aggregate interface take effect on all BFD sessions established by the member ports in its aggregation group. BFD on a link aggregation supports only control packet mode for session establishment and maintenance. The two ends of an established BFD session can only operate in Asynchronous mode. For more information about BFD, see High Availability Configuration Guide.

As a best practice, do not configure BFD for any protocols on a BFD-enabled aggregate interface.

Make sure the number of member ports in the BFD-enabled aggregation group is less than or identical to the number of BFD sessions supported by the device. If the aggregation group contains more member ports than the supported sessions, some Selected ports might change to the Unselected state.

If the number of BFD sessions differs between the two ends of an aggregate link, check their settings for inconsistency in the maximum number of Selected ports. You must make sure the two ends have the same setting for the maximum number of Selected ports.

You can execute this command multiple times on an aggregate interface. If you configure a BFD type multiple times, the most recent configuration takes effect.

Examples

# Enable BFD for Layer 2 aggregation group 1, and specify the source and destination IP addresses as 1.1.1.1 and 2.2.2.2 for BFD sessions.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] link-aggregation bfd ipv4 source 1.1.1.1 destination 2.2.2.2

Related commands

display bfd session

link-aggregation bfd-compatible enable

Use link-aggregation bfd-compatible enable to enable BFD compatible mode on an aggregate interface.

Use undo link-aggregation bfd-compatible enable to disable BFD compatible mode on an aggregate interface.

Syntax

link-aggregation bfd-compatible enable

undo link-aggregation bfd-compatible enable

Default

BFD compatible mode on aggregate interfaces is disabled.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

BFD compatible mode enables BFD to operate correctly on an aggregate link whose remote end is a third-party device that implements BFD differently from the device.

With BFD compatible mode enabled, all member ports in an aggregation group establish BFD sessions with their peer ports. The BFD sessions are not deleted or re-established when the aggregation states of the member ports change.

Examples

# Enable BFD compatible mode on Bridge-Aggregation 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] link-aggregation bfd-compatible enable

Related commands

link-aggregation bfd

link-aggregation global load-sharing mode

Use link-aggregation global load-sharing mode to set the global link-aggregation load sharing mode.

Use undo link-aggregation global load-sharing mode to restore the default.

Syntax

link-aggregation global load-sharing mode { destination-ip | destination-mac | destination-port | ingress-port | source-ip | source-mac | source-port } *

undo link-aggregation global load-sharing mode

Default

Packets are load shared based on the following information:

· Source and destination IP addresses.

· Source and destination MAC addresses.

Views

System view

Predefined user roles

network-admin

Parameters

destination-ip: Distributes traffic based on destination IP addresses.

destination-mac: Distributes traffic based on destination MAC addresses.

destination-port: Distributes traffic based on destination port numbers.

ingress-port: Distributes traffic based on ingress ports.

source-ip: Distributes traffic based on source IP addresses.

source-mac: Distributes traffic based on source MAC addresses.

source-port: Distributes traffic based on source port numbers.

Usage guidelines

If you execute this command multiple times, the most recent configuration takes effect.

If an unsupported load sharing mode is set, the device displays an error message.

Examples

# Set the global load sharing mode to load share packets based on destination MAC addresses.

<Sysname> system-view

[Sysname] link-aggregation global load-sharing mode destination-mac

link-aggregation lacp isolate

Use link-aggregation lacp isolate to isolate aggregate interfaces on the device.

Use undo link-aggregation lacp isolate to remove aggregate interface isolation.

Syntax

link-aggregation lacp isolate [ bagg ]

undo link-aggregation lacp isolate [ bagg ]

Default

Aggregate interfaces are not isolated.

Views

System view

Predefined user roles

network-admin

Parameters

bagg: Isolates Layer 2 aggregate interfaces on the device.

Usage guidelines

Aggregate interface isolation is applicable to the dynamic aggregate interfaces. It gracefully changes all dynamic aggregate interfaces on the device to the Unselected state.

This feature takes effect only on dynamic aggregate interfaces. It cannot isolate static aggregate interfaces.

Examples

# Isolate aggregate interfaces.

<Sysname> system-view

[Sysname] link-aggregation lacp isolate

link-aggregation lacp traffic-redirect-notification enable

Use link-aggregation lacp traffic-redirect-notification enable to enable link-aggregation traffic redirection.

Use undo link-aggregation lacp traffic-redirect-notification enable to disable link-aggregation traffic redirection.

Syntax

link-aggregation lacp traffic-redirect-notification enable

undo link-aggregation lacp traffic-redirect-notification enable

Default

Link-aggregation traffic redirection is disabled.

Views

System view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Usage guidelines

This feature redirects traffic on a Selected port to the remaining available Selected ports of an aggregation group if one of the following events occurs:

· The port is shut down by using the shutdown command.

· The slot that hosts the port reboots, and the aggregation group spans multiple slots.

NOTE:

The device does not redirect traffic to member ports that become Selected during the traffic redirection process.

This feature ensures zero packet loss for known unicast traffic, but it does not protect other types of traffic.

This feature applies only to dynamic link aggregation groups.

To prevent traffic interruption, enable link-aggregation traffic redirection on devices at both ends of the aggregate link.

To prevent packet loss that might occur when a slot reboots, do not enable spanning tree together with link-aggregation traffic redirection.

Link-aggregation traffic redirection cannot operate correctly on an edge aggregate interface.

Global link-aggregation traffic redirection settings take effect on all aggregation groups. A link aggregation group preferentially uses the group-specific link-aggregation traffic redirection settings. If group-specific link-aggregation traffic redirection is not configured, the group uses the global link-aggregation traffic redirection settings.

As a best practice, enable link-aggregation traffic redirection on a per-interface basis. If you enable this feature globally, communication with a third-party peer device might be affected if the peer is not compatible with this feature.

After this command is executed, the device will add a proprietary field to the end of the LACP packets. Because the peer device cannot verify this proprietary field, LACP packets might fail to be verified and exchanged. As a result, the aggregation member ports cannot become Selected. To prevent this issue, you must disable link-aggregation traffic redirection on the H3C device when the H3C device connects to a third-party device.

Examples

# Enable link-aggregation traffic redirection.

<Sysname> system-view

[Sysname] link-aggregation lacp traffic-redirect-notification enable

link-aggregation mode

Use link-aggregation mode dynamic to configure an aggregation group to operate in dynamic aggregation mode and enable LACP.

Use undo link-aggregation mode to restore the default.

Syntax

link-aggregation mode dynamic

undo link-aggregation mode

Default

An aggregation group operates in static aggregation mode.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Usage guidelines

When you change the aggregation mode, make sure you understand the impact of the change on services.

Aggregation mode change might cause Selected member ports to become Unselected.

Examples

# Configure Layer 2 aggregation group 1 to operate in dynamic aggregation mode.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

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

link-aggregation port-priority

Use link-aggregation port-priority to set the port priority of an interface.

Use undo link-aggregation port-priority to restore the default.

Syntax

link-aggregation port-priority priority

undo link-aggregation port-priority

Default

The port priority of an interface is 32768.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

Parameters

priority: Specifies the port priority in the range of 0 to 65535. The smaller the value, the higher the port priority.

Examples

# Set the port priority to 64 for Layer 2 Ethernet interface GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] link-aggregation port-priority 64

Related commands

lacp system-priority

link-aggregation selected-port maximum

Use link-aggregation selected-port maximum to set the maximum number of Selected ports allowed in an aggregation group.

Use undo link-aggregation selected-port maximum to restore the default.

Syntax

link-aggregation selected-port maximum max-number [ lacp-sync ]

undo link-aggregation selected-port maximum

Default

The maximum number of Selected ports allowed in an aggregation group depends on hardware limitation.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

max-number: Specifies the maximum number of Selected ports allowed in an aggregation group. The value range for this argument is 1 to 8.

lacp-sync: Synchronizes the maximum number of Selected ports through LACPDUs. If you do not specify this keyword, the aggregate interface does not synchronize the maximum number of Selected ports with the peer.

Usage guidelines

Executing this command might cause some of the Selected ports in an aggregation group to become Unselected ports.

For a static aggregate link, you must set the maximum number of Selected ports to the same value at its two ends.

For a dynamic aggregate link, you must set the maximum number of Selected ports to the same value at its two ends if you do not specify the lacp-sync keyword. If you specify this keyword, the two ends of the aggregate link compare their maximum Selected port number settings and use the smaller value.

The maximum number of Selected ports allowed in the aggregation groups must be the same for the local and peer ends.

For an aggregation group, the maximum number of Selected ports must be equal to or higher than the minimum number of Selected ports.

The maximum number of Selected ports allowed in an aggregation group is limited by one of the following values, whichever value is smaller:

· Maximum number set by using the link-aggregation selected-port maximum command.

· Maximum number of Selected ports allowed by the link aggregation capability.

You can implement backup between two ports by performing the following tasks:

· Assigning two ports to an aggregation group.

· Setting the maximum number of Selected ports to 1 for the aggregation group.

Then, only one Selected port is allowed in the aggregation group at any point in time, while the Unselected port acts as a backup port.

If the maximum number set in IRF mode is greater than that permitted by the hardware, enable link aggregation enhancement.

Examples

# Set the maximum number of Selected ports to 5 for Layer 2 aggregation group 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] link-aggregation selected-port maximum 5

Related commands

link-aggregation selected-port minimum

Use link-aggregation selected-port minimum to set the minimum number of Selected ports in an aggregation group.

Use undo link-aggregation selected-port minimum to restore the default.

Syntax

link-aggregation selected-port minimum { min-number | percentage number }

undo link-aggregation selected-port minimum

Default

The minimum number of Selected ports in an aggregation group is not specified.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

min-number: Specifies the minimum number of Selected ports in an aggregation group required to bring up the aggregate interface. The value range for this argument is 1 to 8.

percentage number: Sets the minimum percentage of Selected ports in an aggregation group. The value range for the number argument is 1 to 100.

Usage guidelines

IMPORTANT:

After you set the minimum percentage of Selected ports for an aggregation group, aggregate interface flapping might occur when ports join or leave an aggregation group. Make sure you are fully aware of the impacts of this setting when you configure it on a live network.

You can set either the minimum number or the minimum percentage of Selected ports for an aggregation group. If you configure both settings on an aggregate interface, the higher Selected port number limit takes effect.

Executing this command might cause all member ports in the aggregation group to become Unselected ports.

You must set the same minimum number or minimum percentage of Selected ports at the two ends of an aggregate link.

For an aggregation group, the minimum number of Selected ports must be equal to or lower than the maximum number of Selected ports.

Examples

# Set the minimum number of Selected ports to 3 for Layer 2 aggregation group 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] link-aggregation selected-port minimum 3

Related commands

link-aggregation selected-port maximum

link-delay

Use link-delay to set the physical state change suppression interval on an aggregate interface.

Use undo link-delay to restore the default.

Syntax

link-delay { down | up } [ msec ] delay-time

undo link-delay { down | up }

Default

Each time the physical link of an aggregate interface goes up or comes down, the system immediately reports the change to the CPU.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

down: Suppresses link-down events.

up: Suppresses link-up events.

msec: Sets the physical state change suppression interval in milliseconds. If you do not specify this keyword, the suppression interval is in seconds.

delay-time: Sets the physical state change suppression interval. To report a physical state change immediately to the CPU, set the interval to 0.

· If you do not specify the msec keyword, the value range is 0 to 30 seconds.

· If you specify the msec keyword, the value range is 0 to 10000 milliseconds, and the value must be a multiple of 100.

Usage guidelines

You can configure this feature to suppress link-down events, link-up events, or both. If an event of the specified type persists when the suppression interval expires, the system reports the event.

On an interface, you can configure different suppression intervals for link-up and link-down events. If you execute the link-delay command multiple times for an event type, the most recent configuration takes effect on that event type.

When you configure suppression interval settings on an aggregate interface, make sure its peer interface is also an aggregate interface in the same aggregation mode. In addition, the suppression interval settings must be the same between the peer aggregate interfaces.

As a best practice, use the default setting in an S-MLAG environment.

Examples

# Set the link-down event suppression interval to 8 seconds on Bridge-Aggregation 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] link-delay down 8

port lacp system-mac

Use port lacp system-mac to set the LACP system MAC address on an aggregate interface.

Use undo port lacp system to restore the default.

Syntax

port lacp system-mac mac-address

undo port lacp system-mac

Default

The LACP system MAC address is the bridge MAC address of the device.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

mac-address: Specifies a MAC address in the format of H-H-H. The MAC address cannot be an all-zero or broadcast MAC address.

Usage guidelines

Member devices in an S-MLAG system must use the same LACP system MAC address.

Examples

# Set the LACP system MAC address to 0002-0002-0002 on Bridge-Aggregation 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] port lacp system-mac 2-2-2

Related commands

display link-aggregation verbose

lacp system-mac

port lacp system-priority

Use port lacp system-priority to set the LACP system priority on an aggregate interface.

Use undo port lacp system-priority to restore the default.

Syntax

port lacp system-priority priority

undo port lacp system-priority

Default

The LACP system priority is 32768.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

priority: Specifies the LACP system priority in the range of 0 to 65535. The smaller the value, the higher the LACP system priority.

Usage guidelines

Member devices in an S-MLAG system must use the same LACP system priority.

Examples

# Set the LACP system priority to 32 on Bridge-Aggregation 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] port lacp system-priority 32

Related commands

display link-aggregation verbose

lacp system-priority

port bridge enable

Use port bridge enable to enable port bridging on a Layer 2 aggregate interface.

Use undo port bridge enable to disable port bridging on a Layer 2 aggregate interface.

Syntax

port bridge enable

undo port bridge enable

Default

Port bridging is disabled on a Layer 2 aggregate interface.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Usage guidelines

By default, the device drops a packet if its outgoing interface is the incoming interface where the packet arrived. Port bridging enables a Layer 2 aggregate interface to reflect a packet back when it is both the incoming and outgoing interfaces of that packet.

Examples

# Enable port bridging on Bridge-Aggregation 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] port bridge enable

port link-aggregation group

Use port link-aggregation group to assign an interface to an aggregation group.

Use undo port link-aggregation group to remove an interface from the aggregation group to which it belongs.

Syntax

port link-aggregation group { group-id [ force ] | auto [ group-id ] }

undo port link-aggregation group

Default

An interface does not belong to any aggregation group.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

Parameters

group-id: Specifies an aggregation group by its aggregate interface number. The value range for the number argument is 1 to 1024.

force: Enables the current interface to synchronize attribute configurations from the aggregate interface. If you do not specify this keyword, the current interface does not synchronize attribute configurations from the aggregate interface when it joins the aggregation group.

auto: Enables automatic assignment.

Usage guidelines

An interface can belong to only one aggregation group.

If an interface has different attribute configurations from the aggregate interface, the interface cannot join the aggregation group.

After joining an aggregation group, an interface inherits the attribute configurations on the aggregate interface. You can modify the attribute configurations only on the aggregate interface.

After an interface leaves an aggregation group, VLAN settings on the interface will not be restored to the default..

To avoid a loop, shut down an interface before removing the interface from an aggregation group.

The force keyword takes effect only when you assign the interface to an aggregation group. It cannot be saved in the running configuration or a configuration file.

When you enable automatic assignment, you can specify a preferred aggregation group, which must be in dynamic mode.

The device assigns the interface to the preferred aggregation group as long as the LACPDUs received on the interface match the peer information of the reference port in the group.

If you do not specify a preferred group or if the preferred group match fails, the device attempts to select a matching group from the existing dynamic aggregation groups. If no match is found, the device creates a dynamic aggregation group based on the LACPDUs and assigns the interface to that aggregation group.

As a best practice, do not modify the configuration on an automatically created aggregate interface or its member ports.

Examples

# Assign Layer 2 Ethernet interface GigabitEthernet 1/0/1 to Layer 2 aggregation group 1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] port link-aggregation group 1

port s-mlag group

Use port s-mlag group to assign an aggregate interface to an S-MLAG group.

Use undo port s-mlag group to restore the default.

Syntax

port s-mlag group group-id

undo port s-mlag group

Default

An aggregate interface is not in any S-MLAG group.

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

group-id: Specifies an S-MLAG group number in the range of 1 to 1024.

Usage guidelines

Use S-MLAG only to establish aggregate links with servers.

You can assign only Layer 2 aggregate interfaces in dynamic mode to an S-MLAG group.

Each S-MLAG group can contain only one aggregate interface on each device.

Examples

# Assign Bridge-Aggregation 1 to S-MLAG group 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] port s-mlag group 1

reset counters interface

Use reset counters interface to clear statistics for the specified aggregate interfaces.

Syntax

reset counters interface [ bridge-aggregation [ interface-number ] ]

Views

User view

Predefined user roles

network-admin

Parameters

bridge-aggregation: Specifies Layer 2 aggregate interfaces.

interface-number: Specifies an existing aggregate interface number.

Usage guidelines

Use this command to clear history statistics before you collect traffic statistics for a time period.

If you do not specify an aggregate interface type, the command clears statistics for all interfaces in the system.

If you specify only an aggregate interface type, the command clears statistics for all aggregate interfaces of the specified type.

You can specify the bridge-aggregation keyword only when Layer 2 aggregate interfaces exist on the device.

Examples

# Clear the statistics about interface Bridge-Aggregation 1.

<Sysname> reset counters interface bridge-aggregation 1

reset lacp statistics

Use reset lacp statistics to clear LACP statistics for the specified link aggregation member ports.

Syntax

reset lacp statistics [ interface interface-list ]

Views

User view

Predefined user roles

network-admin

Parameters

interface interface-list: Specifies a list of link aggregation member ports, in the format interface-type interface-number1 [ to interface-type interface-number2 ]. The value for the interface-number1 argument must be equal to or greater than the value for the interface-number2 argument. If you do not specify any member ports, the command clears LACP statistics for all member ports.

Examples

# Clear LACP statistics for all link aggregation member ports.

<Sysname> reset lacp statistics

Related commands

display link-aggregation member-port

shutdown

Use shutdown to shut down an interface.

Use undo shutdown to bring up an interface.

Syntax

shutdown

undo shutdown

Views

Layer 2 aggregate interface view

Predefined user roles

network-admin

Usage guidelines

CAUTION:

The shutdown command will disconnect all links established on an interface. Make sure you are fully aware of the impacts of this command when you use it on a live network.

Examples

# Bring up Layer 2 aggregate interface Bridge-Aggregation 1.

<Sysname> system-view

[Sysname] interface bridge-aggregation 1

[Sysname-Bridge-Aggregation1] undo shutdown

03-Layer 2—LAN Switching Command Reference

display link-aggregation verbose

interface bridge-aggregation

jumboframe enable

link-aggregation port-priority

port s-mlag group

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