isis ipv6 tag-value

Function

The isis ipv6 tag-value command configures an IPv6 administrative tag for an interface.

The undo ipv6 isis tag-value command deletes the IPv6 administrative tag.

By default, no IPv6 administrative tag is configured for an interface.

Format

isis ipv6 [ topology topology-name ] tag-value tag [ level-1 | level-2 ]

undo isis ipv6 [ topology topology-name ] tag-value [ tag ] [ level-1 | level-2 ]

Parameters

Parameter	Description	Value
topology topology-name	Specifies the name of a topology instance.	The value is a string of 1 to 31 case-sensitive characters without spaces. When double quotation marks are used around the string, spaces are allowed in the string.
tag	Specifies an administrative tag.	The value is an integer ranging from 1 to 4294967295.
level-1	Configures an administrative tag for a Level-1 interface.	-
level-2	Configures an administrative tag for a Level-2 interface.	-

Views

100GE interface view, 10GE interface view, 25GE sub-interface view, 25GE interface view, 400GE interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE electrical interface view, Global VE sub-interface view, Loopback interface view, Tunnel interface view, VBDIF interface view, VE sub-interface view, VE interface view, VLANIF interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
isis	write

Usage Guidelines

Usage Scenario

An administrative tag carries administrative information about IPv6 address prefixes. Administrative tags can advertise IPv6 address prefixes in the IS-IS area to control routes, simplifying management.

The isis ipv6 tag-value command is used to configure the administrative tag value for an interface, and the tag can be used to filter out unwanted routes.

Prerequisites

IPv6 has been enabled for the IS-IS interface using the isis ipv6 enable command.

Precautions

If the IS-IS cost type is wide, wide-compatible, or compatible, the administrative tag of an interface is advertised through an LSP. The cost type can be configured using the cost-style command.

Example

# Set the IPv6 administrative tag for GigabitEthernet 0/1/0 to 77.

<HUAWEI> system-view
[~HUAWEI] isis 1
[*HUAWEI-isis-1] ipv6 enable
[*HUAWEI-isis-1] quit
[*HUAWEI] interface GigabitEthernet 0/1/0
[*HUAWEI-GigabitEthernet0/1/0] ipv6 enable
[*HUAWEI-GigabitEthernet0/1/0] isis ipv6 enable 1
[*HUAWEI-GigabitEthernet0/1/0] isis ipv6 tag-value 77