ratio: Sets the broadcast suppression threshold as a percentage of the interface bandwidth. The value range for this argument is 0 to 100. A smaller value means that less broadcast traffic is allowed to pass through.

pps max-pps: Specifies the maximum number of broadcast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 × the interface bandwidth.

kbps max-kbps: Specifies the maximum number of kilobits of broadcast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.

Usage guidelines

The broadcast storm suppression features limits the size of broadcast traffic to a threshold on an interface. When the broadcast traffic on the interface crosses this threshold, the system drops packets until the traffic drops below this threshold.

Both the storm-constrain command and the broadcast-suppression command can suppress broadcast storms on a port. The broadcast-suppression command uses the chip to physically suppress broadcast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress broadcast traffic.

For the traffic suppression result to be determined, do not configure both the storm-constrain broadcast command and the broadcast-suppression command on an interface.

The configured suppression threshold value in pps or kbps might be converted into a multiple of a step supported by the chip. As a result, the effective suppression threshold might be different from the configured one. To determine the suppression threshold that takes effect, see the prompts on the device.

Examples

# Set the broadcast suppression threshold to 10000 kbps on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] broadcast-suppression kbps 10000

The actual value is 10048 on port GigabitEthernet1/0/1 currently.

The output shows that the value that takes effect is 10048 kbps (157 times of 64), because the chip only supports step 64.

Related commands

multicast-suppression

unicast-suppression

display ethernet statistics

Use display ethernet statistics to display the Ethernet module statistics.

Syntax

display ethernet statistics slot slot-number

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

slot slot-number: Specifies a cloud cluster member device by its member ID.

Examples

# Display the Ethernet module statistics for the specified slot.

<Sysname> display ethernet statistics slot 1

ETH receive packet statistics:

Totalnum : 10447 ETHIINum : 4459

SNAPNum : 0 RAWNum : 0

LLCNum : 0 UnknownNum : 0

ForwardNum : 4459 ARP : 0

MPLS : 0 ISIS : 0

ISIS2 : 0 IP : 0

IPV6 : 0

ETH receive error statistics:

NullPoint : 0 ErrIfindex : 0

ErrIfcb : 0 IfShut : 0

ErrAnalyse : 5988 ErrSrcMAC : 5988

ErrHdrLen : 0

ETH send packet statistics:

L3OutNum : 211 VLANOutNum : 0

FastOutNum : 155 L2OutNum : 0

ETH send error statistics:

MbufRelayNum : 0 NullMbuf : 0

ErrAdjFwd : 0 ErrPrepend : 0

ErrHdrLen : 0 ErrPad : 0

ErrQoSTrs : 0 ErrVLANTrs : 0

ErrEncap : 0 ErrTagVLAN : 0

IfShut : 0 IfErr : 0

Table 1 Output description

Field	Description
ETH receive packet statistics	Statistics about the Ethernet packets received by the Ethernet module: · Totalnum—Total number of received packets. · ETHIINum—Number of packets encapsulated by using Ethernet II. · SNAPNum—Number of packets encapsulated by using SNAP. · RAWNum—Number of packets encapsulated by using RAW. · ISISNum—Number of packets encapsulated by using ISIS. This field is not supported in the current software version. · LLCNum—Number of packets encapsulated by using LLC. · UnknownNum—Number of packets encapsulated by using unknown methods. · ForwardNum—Number of packets forwarded at Layer 2 or sent to the CPU. · ARP—Number of ARP packets. ‌ · MPLS—Number of MPLS packets. This field is not supported in the current software version. · ISIS—Number of IS-IS packets.‌This field is not supported in the current software version. · ISIS2—Number of large 802.3/802.2 frames encapsulated by using IS-IS.This field is not supported in the current software version.‌ · IP—Number of IP packets. · IPv6—Number of IPv6 packets.
ETH receive error statistics	Statistics about the error Ethernet packets in the inbound direction on the Ethernet module. Errors might be included in packets or occur during the receiving process. The items include: · NullPoint—Number of packets that include null pointers. · ErrIfindex—Number of packets that include incorrect interface indexes. · ErrIfcb—Number of packets that include incorrect interface control blocks. · IfShut—Number of packets that are being received when the interface is shut down. · ErrAnalyse—Number of packets that include packet parsing errors. · ErrSrcMAC—Number of packets that include incorrect source MAC addresses. · ErrHdrLen—Number of packets that include header length errors.
ETH send packet statistics	Statistics about the Ethernet packets sent by the Ethernet module: · L3OutNum—Number of packets sent out of Layer 3 Ethernet interfaces.This field is not supported in the current software version. · VLANOutNum—Number of packets sent out of VLAN interfaces. · FastOutNum—Number of packets fast forwarded. · L2OutNum—Number of packets sent out of Layer 2 Ethernet interfaces.
ETH send error statistics	Statistics about the error Ethernet packets in the outbound direction on the Ethernet module: · MbufRelayNum—Number of packets transparently sent. · NullMbuf—Number of packets with null pointers. · ErrAdjFwd—Number of packets with adjacency table errors. · ErrPrepend—Number of packets with extension errors. · ErrHdrLen—Number of packets with header length errors. · ErrPad—Number of packets with padding errors. · ErrQoSTrs—Number of packets that failed to be sent by QoS. · ErrVLANTrs—Number of packets that failed to be sent in VLANs. · ErrEncap—Number of packets that failed to be sent due to link header encapsulation failures. · ErrTagVLAN—Number of packets that failed to be sent due to VLAN tag encapsulation failures. · IfShut—Number of packets that are being sent when the interface is shut down. · IfErr—Number of packets with incorrect outgoing interfaces.

‌

Related commands

reset ethernet statistics

display interface

Use display interface to display interface information.

Syntax

display interface [ interface-type [ interface-number] ] [ brief [ description | down ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an 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 27 characters of each interface description.

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

Usage guidelines

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

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

Examples

# Display detailed information about Layer 2 interface GigabitEthernet 1/0/1.

<Sysname> display interface gigabitethernet 1/0/1

GigabitEthernet1/0/1

Current state: DOWN

Line protocol state: DOWN

IP packet frame type: Ethernet II, hardware address: 000c-2963-b767

Description: GigabitEthernet1/0/1 Interface

Bandwidth: 100000 kbps

Loopback is not set

Media type is twisted pair, port hardware type is 1000_BASE_T_AN_SFP

Unknown-speed mode, unknown-duplex mode

Link speed type is autonegotiation, link duplex type is autonegotiation

Flow-control is not enabled

Maximum frame length: 9216

Allow jumbo frame to pass

Broadcast max-ratio: 100%

Unknown-multicast max-ratio: 100%

Unicast max-ratio: 100%

PVID: 1

Port link-type: Access

Tagged VLANs: None

UnTagged VLANs: 1

Port priority: 2

Last link flapping: 6 hours 39 minutes 25 seconds

Last clearing of counters: 14:34:09 Tue 11/01/2011

Current system time:2019-01-08 14:50:06

Last time when physical state changed to up:2019-01-08 14:49:45

Last time when physical state changed to down:2019-01-08 14:49:45

Last 300 seconds input: 0 packets/sec 0 bytes/sec -%

Last 300 seconds output: 0 packets/sec 0 bytes/sec -%

Input (total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Input (normal): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

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

0 CRC, 0 frame, 0 overruns, 0 aborts

0 ignored, 0 parity errors

Output (total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Output (normal): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

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

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

0 lost carrier, 0 no carrier

Table 2 Command output

Field	Description
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). · DOWN ( Link-Aggregation interface down )—The aggregate interface to which the interface belongs has been shut down by using the shutdown command. · STP DOWN—The interface has been shut down by the BPDU guard feature. · UP—The interface is both administratively and physically up.
Line protocol state	Data link layer state of the interface. The state is determined through automatic parameter negotiation at the data link layer. · UP—The data link layer protocol is up. · UP (spoofing)—The data link layer protocol is up, but the link is an on-demand link or does not exist. This attribute is typical of null interfaces and loopback interfaces. · DOWN—The data link layer protocol is down. · DOWN (protocols)—The data link layer has been shut down by protocols included in the parentheses. Available protocols include: ¡ LAGG—Shuts down the data link layer when it detects that the aggregate interface does not have Selected ports.
Bandwidth	Expected bandwidth of the interface.
Internet protocol processing	IP packet processing capability of the interface when the interface is not assigned an IP address: · Disabled—The interface cannot process IP packets. · Enabled—The interface can 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 Network Connectivity Configuration Guide. · BOOTP-allocated—BOOTP allocated IP address. For more information, see BOOTP client configuration in Network Connectivity Configuration Guide. · Unnumbered—IP address borrowed from another interface.
IP packet frame type	IPv4 packet framing format.
hardware address	MAC address of the interface.
IPv6 packet frame type	IPv6 packet framing format.
Port priority	Port priority of the interface.
Loopback is set internal	An internal loopback test is running on the interface. This field depends on your configuration.
Loopback is set external	An external loopback test is running on the interface. This field depends on your configuration.
Loopback is not set	No loopback test is running on the interface. This field depends on your configuration.
100Mbps-speed mode	The interface is operating at 100 Mbps. This field depends on your configuration and the link parameter negotiation result.
1000Mbps-speed mode	The interface is operating at 1000 Mbps. This field depends on your configuration and the link parameter negotiation result.
10Gbps-speed mode	The interface is operating at 10 Gbps. This field depends on your configuration and the link parameter negotiation result.
Unknown-speed mode	The speed of the interface is unknown because the speed negotiation fails or the interface is physically disconnected.
half-duplex mode	The interface is operating in half duplex mode. This field depends on your configuration and the link parameter negotiation result.
full-duplex mode	The interface is operating in full duplex mode. This field depends on your configuration and the link parameter negotiation result.
unknown-duplex mode	The duplex mode of the interface is unknown because the duplex mode negotiation fails or the interface is physically disconnected.
Link speed type is autonegotiation	The interface is configured with the speed auto command.
Link speed type is force link	The interface is manually configured with a speed (for example, 1000 Mbps) by using the speed command.
link duplex type is autonegotiation	The interface is configured with the duplex auto command.
link duplex type is force link	The interface is manually configured with a duplex mode (for example, half or full) by using the duplex command.
Maximum frame length	Maximum length of Ethernet frames allowed to pass through the interface.
Allow jumbo frame to pass	The interface allows jumbo frames to pass through.
PVID	Port VLAN ID (PVID) of the interface.
Port link-type	Link type of the interface: · access. · trunk. · hybrid.
Tagged VLANs	VLANs for which the interface sends packets without removing VLAN tags.
Untagged VLANs	VLANs for which the interface sends packets after removing VLAN tags.
VLAN Passing	VLANs whose packets can be forwarded by the port. The VLANs must have been created.
VLAN permitted	VLANs whose packets are permitted by the port.
Trunk port encapsulation	Encapsulation protocol type for the trunk port.
Last link flapping	The amount of time that has elapsed since the most recent physical state change of the interface. This field displays Never if the interface has been physically down since device startup.
Last hardware down reason	Reason for which the interface hardware went down: · PHY line side is down. · PHY system side is down. · No optical signal has been received at the optical port.
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.
Current system time	Current system date and time, which is displayed in the YYYY-MM-DD hh:mm:ss format by default. If the time zone is configured, this field is in the YYYY-MM-DD hh:mm:ss zone-name±hh:mm:ss format, where the zone-name argument is the local time zone name.
Last time when physical state changed to up	Last date and time when the physical state of the interface changed to up, which is displayed in the YYYY-MM-DD hh:mm:ss format by default. If the time zone is configured, this field is in the YYYY-MM-DD hh:mm:ss zone-name±hh:mm:ss format, where the zone-name argument is the local time zone name. If the physical state of the interface has never changed to up, this field displays a hyphen (-).
Last time when physical state changed to down	Last date and time when the physical state of the interface changed to down, which is displayed in the YYYY-MM-DD hh:mm:ss format by default. If the time zone is configured, this field is in the YYYY-MM-DD hh:mm:ss zone-name±hh:mm:ss format, where the zone-name argument is the local time zone name. If the physical state of the interface has never changed to down, this field displays a hyphen (-).
Last 300 seconds input: 0 packets/sec 0 bytes/sec 0% Last 300 seconds output: 0 packets/sec 0 bytes/sec 0%	Average inbound or outbound traffic rate (in pps and Bps) in the last 300 seconds, and the ratio of the actual rate to the interface bandwidth. A hyphen (-) indicates that the statistical item is not supported.
Input(total): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses	The two fields on the first line represent the inbound traffic statistics (in packets and bytes) for the interface. All inbound normal packets, abnormal packets, and normal pause frames were counted. The four fields on the second line represent: · Number of inbound unicast packets. · Number of inbound broadcasts. · Number of inbound multicasts. · Number of inbound pause frames. A hyphen (-) indicates that the statistical item is not supported.
Input(normal): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses	The two fields on the first line represent the inbound normal traffic and pause frame statistics (in packets and bytes) for the interface. The four fields on the second line represent: · Number of inbound normal unicast packets. · Number of inbound normal broadcasts. · Number of inbound normal multicasts. · Number of inbound normal pause frames. A hyphen (-) indicates that the statistical item is not supported.
input errors	Statistics of incoming error packets.
runts	Number of inbound frames meeting the following conditions: · Shorter than 64 bytes. · In correct format. · Containing valid CRCs.
giants	Number of inbound giants. Giants refer to frames larger than the maximum frame length supported on the interface. For an Ethernet interface that does not permit jumbo frames, the maximum frame length is as follows: · 1518 bytes (without VLAN tags). · 1522 bytes (with VLAN tags). For an Ethernet interface that permits jumbo frames, the maximum Ethernet frame length is set when you configure jumbo frame support on the interface.
throttles	Number of inbound frames that had a non-integer number of bytes.
CRC	Total number of inbound frames that had a normal length, but contained CRC errors.
frame	Total number of inbound frames that contained CRC errors and a non-integer number of bytes.
overruns	Number of packets dropped because the input rate of the port exceeded the queuing capability.
aborts	Total number of illegal inbound packets: · Fragment frames—CRC error frames shorter than 64 bytes. The length (in bytes) can be an integral or non-integral value. · Jabber frames—CRC error frames greater than the maximum frame length supported on the Ethernet interface (with an integral or non-integral length). ¡ For an Ethernet interface that does not permit jumbo frames, the maximum frame length is 1518 bytes (without VLAN tags) or 1522 bytes (with VLAN tags). ¡ For an Ethernet interface that permits jumbo frames, the maximum Ethernet frame length is set when you configure jumbo frame support on the interface. · Symbol error frames—Frames that contained a minimum of one undefined symbol. · Unknown operation code frames—Non-pause MAC control frames. · Length error frames—Frames whose 802.3 length fields did not match the actual frame length (46 to 1500 bytes).
ignored	Number of inbound frames dropped because the receiving buffer of the port ran low.
parity errors	Total number of frames with parity errors.
Output(total): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses	The two fields on the first line represent the outbound traffic statistics (in packets and bytes) for the interface. All outbound normal packets, abnormal packets, and normal pause frames were counted. The four fields on the second line represent: · Number of outbound unicast packets. · Number of outbound broadcasts. · Number of outbound multicasts. · Number of outbound pause frames. A hyphen (-) indicates that the statistical item is not supported.
Output(normal): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses	The two fields on the first line represent the outbound normal traffic and pause frame statistics (in packets and bytes) for the interface. The four fields on the second line represent: · Number of outbound normal unicast packets. · Number of outbound normal broadcasts. · Number of outbound normal multicasts. · Number of outbound normal pause frames. A hyphen (-) indicates that the statistical item is not supported.
output errors	Number of outbound packets with errors.
underruns	Number of packets dropped because the output rate of the interface exceeded the output queuing capability. This is a low-probability hardware anomaly.
buffer failures	Number of packets dropped because the transmitting buffer of the interface ran low.
aborts	Number of packets that failed to be transmitted, for example, because of Ethernet collisions.
deferred	Number of frames that the interface deferred to transmit because of detected collisions.
collisions	Number of frames that the interface stopped transmitting because Ethernet collisions were detected during transmission.
late collisions	Number of frames that the interface deferred to transmit after transmitting their first 512 bits because of detected collisions.
IPv4 traffic statistics	IPv4 packet statistics.
IPv6 traffic statistics	IPv6 packet statistics.
Last 300 seconds input rate: 0 packets/sec, 0 bytes/sec	Average inbound traffic rate (in pps and Bps) in the last 300 seconds. A hyphen (-) indicates that the statistical item is not supported.
Last 300 seconds output rate: 0 packets/sec, 0 bytes/sec	Average outbound traffic rate (in pps and Bps) in the last 300 seconds. A hyphen (-) indicates that the statistical item is not supported.
Input: 0 packets, 0 bytes	Inbound traffic statistics (in packets and bytes) for the interface. A hyphen (-) indicates that the statistical item is not supported.
Output: 0 packets, 0 bytes	Outbound traffic statistics (in packets and bytes) for the interface. A hyphen (-) indicates that the statistical item is not supported.

‌

# Display brief information about all interfaces.

<Sysname> display interface brief

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Protocol: (s) – spoofing

Interface Link Protocol Primary IP Description

GE1/0/1 DOWN DOWN --

Loop0 UP UP(s) 2.2.2.9

NULL0 UP UP(s) --

Vlan1 UP DOWN --

Vlan999 UP UP 192.168.1.42

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

GE1/0/2 DOWN auto A A 1

GE1/0/3 UP auto F(a) A 1 aaaaaaaaaaaaaaaaaaaaaaaaaaa

# Display brief information about GigabitEthernet 1/0/3, including the complete description of the interface.

<Sysname> display interface gigabitethernet 1/0/3 brief description

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

GE1/0/3 UP auto F(a) A 1 aaaaaaaaaaaaaaaaaaaaaaaaaaaaa

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

# Display information about interfaces in DOWN state and the causes.

<Sysname> display interface brief down

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

GE1/0/1 DOWN Not connected

Vlan2 DOWN Not connected

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

GE1/0/2 DOWN Not connected

Table 3 Command output

Field	Description
Brief information on interfaces in route mode:	This field is not supported in the current software version. Brief information about Layer 3 interfaces.
Interface	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. · Stby—The interface is a backup interface in standby state.
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.
Description	Description of the interface.
Brief information of interfaces in bridge mode:	Brief information about Layer 2 interfaces.
Type: A - access; T - trunk; H – hybrid	Link type options for interfaces.
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.
PVID	Port VLAN ID.
Cause	Cause for the physical link state of an interface to be DOWN: · Administratively—The interface has been manually shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command. · DOWN ( Link-Aggregation interface down )—The interface is a member port of an aggregate interface, and the aggregate interface is down. · DOWN (Loopback detection down)—The loopback detection module has detected loops. · Not connected—No physical connection exists (possibly because the network cable is disconnected or faulty). · STP DOWN—The interface has been shut down by the BPDU guard feature. · Standby—The interface is a backup interface in standby state.

‌

Related commands

reset counters interface

duplex

Use duplex to set the duplex mode for an Ethernet interface.

Use undo duplex to restore the default.

Syntax

duplex { auto | full | half }

undo duplex

Default

Ethernet interfaces operate in autonegotiation mode.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

auto: Configures the interface to autonegotiate the duplex mode with the peer.

full: Configures the interface to operate in full duplex mode. In this mode, the interface can receive and transmit packets simultaneously.

half: Configures the interface to operate in half duplex mode. In this mode, the interface can only receive or transmit packets at a given time.

Examples

# Configure GigabitEthernet 1/0/1 to operate in full duplex mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] duplex full

flow-interval

Use flow-interval to set the statistics polling interval.

Use undo flow-interval to restore the default.

Syntax

flow-interval interval

undo flow-interval

Default

The statistics polling interval is 300 seconds.

Views

System view

Ethernet interface view

Predefined user roles

network-admin

Parameters

interval: Sets the statistics polling interval in seconds. In system view, the interval is in the range of 5 to 300 and must be a multiple of 5. In Ethernet interface view, the interval is in the range of 1 to 300 and must be a multiple of 1.

Usage guidelines

The statistics polling interval configured in system view takes effect on all Ethernet interfaces.

The statistics polling interval configured in Ethernet interface view takes effect only on the current interface.

The statistics polling interval configured in Ethernet interface view takes precedence over the statistics polling interval configured in system view. The interval configured in system view takes effect on an Ethernet interface only when no interval is configured or the default interval is configured for the Ethernet interface.

As a best practice, use the default value for the flow-interval command in system view. A short static polling interval in system view might decrease the system performance and result in inaccurate statistics.

Examples

# Set the statistics polling interval to 100 seconds on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] flow-interval 100

interface

Use interface to enter interface view.

Syntax

interface interface-type interface-number

Views

System view

Configuration profile view

Predefined user roles

network-admin

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

Examples

# Enter the view of GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1]

# Create a configuration profile named p1 and enter the view of Ethernet interface GigabitEthernet1/0/1 from this configuration profile.

<Sysname> system-view

[Sysname] configuration profile p1 model WA6320

[Sysname-config-profile-p1] interface gigabitethernet 1/0/1

[Sysname-config-profile-p1-GigabitEthernet1/0/1]

jumboframe enable

Use jumboframe enable to allow jumbo frames within the specified length to pass through.

Use undo jumboframe enable to prevent jumbo frames from passing through.

Use undo jumboframe enable size to restore the default.

Syntax

jumboframe enable [ size ]

undo jumboframe enable [ size ]

Default

The device allows jumbo frames within 4000 bytes to pass through.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

Parameters

size: Sets the maximum length (in bytes) of Ethernet frames that are allowed to pass through. The value range is 1700 to 4000.

Usage guidelines

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

Examples

# Allow jumbo frames to pass through GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] jumboframe enable

loopback

CAUTION:

After you enable loopback testing on an Ethernet interface, the interface does not forward data traffic.

‌

Use loopback to enable loopback testing on an Ethernet interface.

Syntax

loopback { external | internal }

Default

Loopback testing is disabled on an Ethernet interface.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

external: Enables external loopback testing on the Ethernet interface.

internal: Enables internal loopback testing on the Ethernet interface.

Usage guidelines

After you enable loopback testing on an Ethernet interface, the Ethernet interface switches to full duplex mode. After you disable loopback testing, the Ethernet interface restores to its duplex setting.

The shutdown and loopback commands are mutually exclusive.

Examples

# Enable internal loopback testing on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] loopback internal

multicast-suppression

Use multicast-suppression to enable multicast storm suppression and set the multicast storm suppression threshold.

Use undo multicast-suppression to disable multicast storm suppression.

Syntax

multicast-suppression { ratio | pps max-pps | kbps max-kbps } [ unknown ]

undo multicast-suppression

Default

Ethernet interfaces do not suppress multicast traffic.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

ratio: Sets the multicast suppression threshold as a percentage of the interface bandwidth. The value range for this argument (in percentage) is 0 to 100. A smaller value means that less multicast traffic is allowed to pass through.

pps max-pps: Specifies the maximum number of multicast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 × the interface bandwidth.

kbps max-kbps: Specifies the maximum number of kilobits of multicast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.

Usage guidelines

The multicast storm suppression feature limits the size of multicast traffic to a threshold on an interface. When the multicast traffic on the interface crosses this threshold, the system drops packets until the traffic drops below this threshold.

Both the storm-constrain command and the multicast-suppression command can suppress multicast storms on a port. The multicast-suppression command uses the chip to physically suppress multicast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress multicast traffic.

For the traffic suppression result to be determined, do not configure both the storm-constrain multicast command and the multicast-suppression command on an interface.

Examples

# Set the multicast storm suppression threshold to 10000 kbps on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] multicast-suppression kbps 10000

The actual value is 10048 on port GigabitEthernet1/0/1 currently.

The output shows that the value that takes effect is 10048 kbps (157 times of 64), because the chip only supports step 64.

Related commands

broadcast-suppression

unicast-suppression

reset ethernet statistics

Use reset ethernet statistics to clear the Ethernet module statistics.

Syntax

reset ethernet statistics [ slot slot-number ]

Views

User view

Predefined user roles

network-admin

Parameters

slot slot-number: Specifies a cloud cluster member device by its member ID. If you do not specify a member device, this command clears statistics for all cloud cluster member devices.

Examples

# Clear the Ethernet module statistics for the specified slot.

<Sysname> reset ethernet statistics slot 1

Related commands

display ethernet statistics

shutdown all-interfaces

Use shutdown all-interfaces to shut down all main interfaces except management interfaces, cloud cluster physical interfaces, and interfaces excluded from shutdown.

Use undo shutdown all-interfaces to bring up all main interfaces except management interfaces, cloud cluster physical interfaces, and interfaces excluded from shutdown.

Syntax

shutdown all-interfaces exclude interface-list

undo shutdown all-interfaces exclude interface-list

Default

Physical interfaces are up.

Views

System view

Predefined user roles

network-admin

Parameters

exclude interface-list: Specifies interfaces to be excluded from shutdown. With this option specified, this command will shut down all main interfaces except the management Ethernet interfaces, cloud cluster physical interfaces, and the specified interfaces excluded from shutdown. Shutdown interfaces are in ADM state. Specify the interface list in the format of interface-list = { interface-type interface-number1 [ to interface-type interface-number2 ] }. You can specify the interface-list parameter for any times. The interface-type interface-number argument specifies an interface by its type and number. The selected interfaces must reside on the same interface card or subcard. The value for the interface-number2 argument must be greater than the value for the interface-number1 argument. For the configuration to succeed, make sure the start interface and the end interface, which are before and after the to keyword respectively, are of the same type.

Usage guidelines

This command shuts down all interfaces except the management Ethernet interfaces, cloud cluster physical interfaces, and interfaces excluded from shutdown on a device. In this case, if you execute the display this command on an interface that is shut down, the output shows that the shutdown command is automatically generated on the interface.

To bring up an interface shut down by using the shutdown all-interfaces command, you can execute the undo shutdown command in interface view or the undo shutdown all-interfaces command in system view.

Examples

# Shut down all main interfaces except management interfaces, cloud cluster physical interfaces, and interfaces GigabitEthernet 1/0/1 through GigabitEthernet 1/0/4.

<Sysname> system-view

[Sysname] shutdown all-interfaces exclude gigabitethernet 1/0/1 to gigabitethernet 1/0/4

Related commands

shutdown

shutdown all-physical-interfaces

speed

Use speed to set the speed of an Ethernet interface.

Use undo speed to restore the default.

Syntax

speed { 100 | 1000 | 10000 | auto }

undo speed

Default

The speed of an Ethernet interface is autonegotiated.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

100: Sets the interface speed to 100 Mbps.

1000: Sets the interface speed to 1000 Mbps.

10000: Sets the interface speed to 10000 Mbps.

200000: Sets the interface speed to 200000 Mbps.

auto: Enables the interface to negotiate a speed with its peer.

Usage guidelines

For an Ethernet copper port, use the speed command to set its speed to match the speed of the peer interface. Support of copper ports for keywords of this command varies by copper port type. For more information, use the speed ? command in interface view. If the system does not prompt that operation failed when you configure a speed for a copper port, the copper port supports this speed. Otherwise, the copper port does not support this speed.

For a fiber port, use the speed command to set its speed to match the rate of a transceiver module. Support of fiber ports for keywords of this command varies by fiber port type. For more information, use the speed ? command in interface view. If the system does not prompt that operation failed when you configure a speed for a fiber port, the fiber port supports this speed. Otherwise, the fiber port does not support this speed.

Additionally, you must select a speed for a fiber port according to the transceiver module installed to ensure that the transceiver module can be used properly. If the transceiver module installed in a fiber port does not support the speed for the fiber port, the transceiver module cannot be used. For example, the transceiver module cannot be used if the following conditions exist:

· The transceiver module installed in an SFP+ fiber port is an SFP GE transceiver module and the speed 10000 command is executed on the fiber port.

· The transceiver module installed in an SFP+ fiber port is an SFP 10-GE transceiver module and the speed 1000 command is executed on the fiber port.

Only Ethernet interfaces on the EWPXM1XG03 or EWPXM1XG20 expansion module support the speed 10000 command.

Examples

# Configure GigabitEthernet 1/0/1 to autonegotiate the speed.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] speed auto

unicast-suppression

Use unicast-suppression to enable unknown unicast storm suppression and set the unknown unicast storm suppression threshold.

Use undo unicast-suppression to disable unknown unicast storm suppression.

Syntax

unicast-suppression { ratio | pps max-pps | kbps max-kbps }

undo unicast-suppression

Default

Ethernet interfaces do not suppress unknown unicast traffic.

Views

Ethernet interface view

Predefined user roles

network-admin

Parameters

ratio: Sets the unknown unicast suppression threshold as a percentage of the interface bandwidth. The value range for this argument (in percentage) is 0 to 100. A smaller value means that less unknown unicast traffic is allowed to pass through.

pps max-pps: Specifies the maximum number of unknown unicast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 × the interface bandwidth.

kbps max-kbps: Specifies the maximum number of kilobits of unknown unicast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.

Usage guidelines

The unknown unicast storm suppression feature limits the size of unknown unicast traffic to a threshold on an interface. When the unknown unicast traffic on the interface crosses this threshold, the system discards packets until the unknown unicast traffic drops below this threshold.

Both the storm-constrain command and the unicast-suppression command can suppress unknown unicast storms on a port. The unicast-suppression command uses the chip to physically suppress unknown unicast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress unknown unicast traffic.

For the unknown unicast traffic suppression result to be determined, do not configure both the storm-constrain unicast command and the unicast-suppression command on an interface.

Examples

# Set the unknown unicast storm suppression threshold to 10000 kbps on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] unicast-suppression kbps 10000

The actual value is 10048 on port GigabitEthernet1/0/1 currently.

The output shows that the value that takes effect is 10048 kbps (157 times of 64), because the chip only supports step 64.

Related commands

broadcast-suppression

multicast-suppression

04-Interface Command Reference

flow-interval

reset ethernet statistics

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