Contents

Service instance group commands· 1

display service-instance-group· 1

failover-group· 1

service-instance-group· 3

 

Service instance group commands

display service-instance-group

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

Syntax

display service-instance-group [ service-instance-group-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

service-instance-group-name: Specifies a service instance group by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a service instance group, this command displays information about all service instance groups.

Examples

# Display information about all service instance groups.

<Sysname> display service-instance-group

Service instance group information:

  Service instance group: sgrp

          Failover group: test

  Total service instance groups: 1

# Display information about the service instance group sgrp.

<Sysname> display service-instance-group sgrp

  Service instance group: sgrp

          Failover group: test 

Table 1 Command output

Field	Description
Service instance group	Name of the service instance group.
Failover group	Name of the failover group associated with the service instance group.
Total service instance groups	Total number of service instance groups.

 

failover-group

Use failover-group to associate a failover group with the service instance group.

Use undo failover-group to remove the association between the failover group and the service instance group.

Syntax

failover-group failover-group-name

undo failover-group failover-group-name

Default

A service instance group is not associated with any failover groups.

Views

Service instance group view

Predefined user roles

network-admin

Parameters

failover-group-name: Specifies a failover group by its name, a case-sensitive string of 1 to 63 characters.

Usage guidelines

For inter-system service backup, you can associate a service instance group with only one failover group. The nodes in the failover group must belong to different systems.

For intra-system service backup, you can associate a service instance group with one or multiple failover groups. The nodes in the failover groups must belong to the same system.

·     If you associate a service instance group with one failover group, the nodes in the failover group perform NAT service backup globally.

·     If you associate a service instance group with multiple failover groups, NAT service backup loads are distributed among the failover groups. Each failover group also backs up services between its nodes. You can associate a service instance group with a maximum of four failover groups.

For more information about failover groups, see High Availability Configuration Guide.

You cannot use a service instance group for both inter-system and intra-system service backup.

You cannot associate a service instance group with multiple failover groups if the service instance group has been associated with a NAT instance that has one of the following settings:

·     Static port block mappings.

·     Address ranges configured by using the address command for a NAT address group that provides the outbound dynamic NAT service.

·     NO-PAT.

·     Static NAT.

·     Global NAT address group that has multiple NAT instance associations.

·     NAT server mapping that maps one public IP address to multiple private IP addresses.

If the NAT instance with a service instance group specified has NAT entries, you are not allowed to remove the association between the service instance group and failover group.

Examples

# Associate failover group test with service instance group abc.

<Sysname> system-view

[Sysname] service-instance-group abc

[Sysname-service-instance-group-abc] failover-group test

# Associate failover groups test1 and test2 with service instance group abc.

<Sysname> system-view

[Sysname] service-instance-group abc

[Sysname-service-instance-group-abc] failover-group test1

[Sysname-service-instance-group-abc] failover-group test2

Related commands

failover group

service-instance-group

Use service-instance-group to create a service instance group and enter its view, or enter the view of an existing service instance group.

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

Syntax

service-instance-group service-instance-group-name

undo service-instance-group service-instance-group-name

Default

No service instance groups exist.

Views

System view

Predefined user roles

network-admin

Parameters

service-instance-group-name: Specifies a service instance group by its name, a case-sensitive string of 1 to 31 characters.

Usage guidelines

A service instance group can be associated with failover groups.

A service instance group can be specified for only one NAT instance.

If the NAT instance with a service instance group specified has NAT entries, you are not allowed to delete the service instance group.

Examples

# Create service instance group sgrp and enter its view.

<Sysname> system-view

[Sysname] service-instance-group sgrp

[Sysname-service-instance-group-sgrp]

Related commands

nat instance (Layer 3—IP Services Command Reference)