apply cost-type

Function

The apply cost-type command sets the cost type of a route.

The undo apply cost-type command cancels the configuration.

By default, no cost type of a route is set.

Format

apply cost-type { external | internal | type-1 | type-2 | internal-inc-ibgp | med-plus-igp | med-inherit-aigp }

undo apply cost-type

Parameters

Parameter	Description	Value
external	Sets the cost type to IS-IS external.	-
internal	Sets the cost type to IS-IS internal or sets the MED of a BGP route to the cost of the IGP route to which the BGP route recurses. This parameter takes effect only on EBGP peers.	-
type-1	Sets the cost type to OSPF external Type 1.	-
type-2	Sets the cost type to OSPF external Type 2.	-
internal-inc-ibgp	Sets the cost type to IS-IS internal or enables the MED of a BGP route to inherit the cost of the IGP route to which the BGP route recurses. This parameter takes effect both on EBGP and IBGP peers.	-
med-plus-igp	Sets the MED of a BGP route by adding the original MED to the cost of the IGP route to which the BGP route recurses. This parameter takes effect both on EBGP and IBGP peers.	-
med-inherit-aigp	Enables the MED of a BGP route to inherit the AIGP. This parameter takes effect both on EBGP and IBGP peers. The policy applies only to BGP VPN peers.	-

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 cost type for the routes that match an if-match clause, run the apply cost-type command. After the cost type of the routes that match a route-policy is set, the routes that are imported using the route-policy carry the set cost type.

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 routes match the route-policy, the cost type of the routes is changed.

Precautions

Different operations are performed when the apply cost-type { internal | internal-inc-ibgp } command is applied to IS-IS routes and BGP routes:

When the apply cost-type internal command is applied to IS-IS routes:

Routes are configured as IS-IS internal routes.

When the apply cost-type internal command is applied to BGP routes:

Thedevice sets the MED of each BGP route advertised to a peer to the cost of the IGP route to which the BGP route recurses.
The internal parameter takes effect only on EBGP peers, whereas the internal-inc-ibgp parameter takes effect both on EBGP and IBGP peers.

Example

# Set the MED value of the BGP route to inherit the AIGP value.

<HUAWEI> system-view
[~HUAWEI] route-policy policy permit node 10
[*HUAWEI-route-policy] apply cost-type med-inherit-aigp

# Set the cost type to OSPF external Type-1.

<HUAWEI> system-view
[~HUAWEI] route-policy policy permit node 10
[*HUAWEI-route-policy] apply cost-type type-1