03-Layer 2—LAN Switching Command Reference

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17-Service loopback group commands
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Service loopback group commands

display service-loopback group

Use display service-loopback group to display service loopback group information.

Syntax

display service-loopback group [ group-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

group-id: Specifies a service loopback group ID. The value range for the group-id argument is 1 to 1024. If you do not specify a service loopback group, this command displays information about all service loopback groups.

Examples

# Display information about service loopback group 5.

<Sysname> display service-loopback group 5

 

Group ID: 5                Service type: Tunnel

  Member                            Status

  Ten-GigabitEthernet1/0/1          Selected

  Ten-GigabitEthernet1/0/2          Unselected

Table 1 Command output

Field

Description

Group ID

Service loopback group ID.

Service type

Service type of the service loopback group:

·     Multicast-tunnel—Supports multicast tunnel services.

·     Tunnel—Supports unicast tunnel services.

·     Multiport—Supports multiport ARP services.

·     VSI-gateway—Supports VSI gateway services.

Member

Member ports of the service loopback group.

Status

Member port state:

·     Unselected—The port is in Unselected state. An unselected port cannot forward traffic of the service type.

·     Selected—The port is in Selected state. A selected port can forward traffic of the service type.

 

port service-loopback group

Use port service-loopback group to assign a port to a service loopback group.

Use undo port service-loopback group to remove a port from a service loopback group.

Syntax

port service-loopback group group-id

undo port service-loopback group

Default

A port does not belong to a service loopback group.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

Parameters

group-id: Specifies a service loopback group ID. The value range for the group-id argument is 1 to 1024.

Usage guidelines

CAUTION

CAUTION:

·     When you assign a port to a service loopback group, the system removes the configuration on the port. Make sure you are fully aware of the impact of this command before using it on a live network.

·     Do not execute this command on an IRF physical interface if that interface is the only member interface of an IRF port. Doing so will split the IRF fabric, because this command also removes the binding of the physical interface and IRF port.

·     For correct traffic processing, make sure a service loopback group has a minimum of one member port when it is being used by a feature.

 

Before assigning a port to a service loopback group, make sure the port supports the service type of the group.

A port can belong to only one service loopback group. You can assign a maximum of 32 ports to a service loopback group.

Examples

# Assign Ten-GigabitEthernet 1/0/1 to service loopback group 5.

<Sysname> system-view

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

[Sysname-Ten-GigabitEthernet1/0/1] port service-loopback group 5

service-loopback group

Use service-loopback group to create a service loopback group and specify its service type.

Use undo service-loopback group to delete a service loopback group.

Syntax

service-loopback group group-id type { { multicast-tunnel | tunnel } * | multiport | vsi-gateway }

undo service-loopback group group-id

Default

No service loopback groups exist.

Views

System view

Predefined user roles

network-admin

Parameters

group-id: Specifies a service loopback group ID. The value range for the group-id argument is 1 to 1024.

type: Specifies the service type of the service loopback group.

multicast-tunnel: Specifies multicast tunnel services.

tunnel: Specifies unicast tunnel services.

multiport: Specifies multiport ARP services.

vsi-gateway: Specifies VSI gateway services.

Usage guidelines

Service loopback groups must work with other features, such as GRE. A service loopback group can be used by multiple features.

You must create a service loopback group before you can use it with a feature.

You can configure only one service loopback group for a service type. You cannot change the service type of a service loopback group.

To ensure correct traffic processing, do not delete a service loopback group that is being used by a feature.

Examples

# Create service loopback group 5 and specify unicast tunnel services for the group.

<Sysname> system-view

[Sysname] service-loopback group 5 type tunnel

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