Contents

Service loopback group commands· 1

display service-loopback group· 1

port service-loopback group· 1

service-loopback group· 2

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

Service Group ID: 5       Service Type: Tunnel

Member:

 Ten-GigabitEthernet1/0/1

 Ten-GigabitEthernet1/0/2

Table 1 Command output

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

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.

To avoid IRF split, do not assign a port to a service loopback group if that port is the only IRF physical interface of an IRF port.

In an IRF 3.1 system, ports on PEXs cannot be assigned to service loopback groups.

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. Do not assign any of the 48 SFP28 ports on the S6820-56HF switch to a service loopback group. Assigning SFP28 ports on the S6820-56HF switch to a service loopback group reduces the traffic transmission rate of the switch.

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.

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 the multicast tunnel service.

tunnel: Specifies the unicast tunnel service.

multiport: Specifies the multiport ARP service.

vsi-gateway: Specifies the VSI gateway service.

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 the unicast tunnel service for the group.

<Sysname> system-view

[Sysname] service-loopback group 5 type tunnel