apply tag

Function

The apply tag command sets the tag for IGP routes.

The undo apply tag command cancels the configuration.

By default, no tag is set for routes.

Format

apply tag tag

undo apply tag

Parameters

Parameter	Description	Value
tag	Specifies the tag of routes. Routes can be tagged as required. You can set the same tag for routes of the same type. Then, routes can be flexibly controlled and managed through tags in the route-policy.	The value is an integer ranging from 0 to 4294967295.

Parameter

Description

Value

tag

Specifies the tag of routes. Routes can be tagged as required. You can set the same tag for routes of the same type. Then, routes can be flexibly controlled and managed through tags in the route-policy.

The value is an integer ranging from 0 to 4294967295.

Views

Route-policy view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
route-base	write

Usage Guidelines

Usage Scenario

To set the same tag for the routes that match the filtering conditions specified in the if-match clause, run the apply tag command.

Run the route-policy command to enter the Route-policy view.
A route-policy may consist of multiple nodes. The relationship between the nodes is "OR". The system matches a route against the nodes in sequence. If the route matches a node, the route matches the route-policy, and the system no longer matches it against other nodes.
Each node comprises a set of if-match and apply clauses. The if-match clauses define the filtering rules that are used to match certain route attributes. The relationship among if-match clauses of the same node that are based on different route attributes is AND. A route matches a node only when the route matches all the filtering rules specified in the if-match clauses of the node. The apply clauses specify actions. The relationship among if-match clauses of the same node that are based on the same route attribute is OR. The system matches routes against the if-match clauses in order. If a route matches an if-match clause, the system no longer matches the route against the rest if-match clauses. For example, the if-match community-filter 1 and if-match as-path-filter 1 configurations in node 10 are based on different route attributes. Therefore, the relationship among if-match clauses of this node is AND. The if-match community-filter 1 and if-match community-filter 2 configurations in node 20 are both based on the community attribute. Therefore, the relationship among if-match clauses of this node is OR. The apply clauses specify actions. If a route matches a node, the apply clauses set some attributes for the route.

Prerequisites

A route-policy has been configured using the route-policy command.

Configuration Impact

After a route matches a route-policy, the tag of the route is changed.

Precautions

The apply tag command sets the tag for only IGP routes.

Example

# Set the tag of routes to 100.

<HUAWEI> system-view
[~HUAWEI] route-policy policy permit node 10
[*HUAWEI-route-policy] apply tag 100