bestroute igp-metric-ignore (BGP-VPNv4 address family view)

Function

The bestroute igp-metric-ignore command configures BGP to ignore the IGP cost when selecting the optimal route.

The undo bestroute igp-metric-ignore command restores the default configuration.

By default, BGP uses the IGP cost as one of route selection rules.

Format

bestroute igp-metric-ignore

undo bestroute igp-metric-ignore

Parameters

None

Views

BGP-VPNv4 address family view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

On a BGP network, a device often receives multiple routes with the same prefix but different paths from different peers. To forward traffic to that prefix address, BGP needs to select an optimal route from these routes. By default, BGP will compare the IGP costs of these routes to their BGP next hops and select a route with the smallest IGP cost.

The bestroute igp-metric-ignore command can be run to configure BGP to ignore the IGP costs in route selection.

Configuration Impact

After the bestroute igp-metric-ignore command is run, BGP does not compare the IGP costs of routes to BGP next hops.

Example

# Configure BGP to ignore the IGP cost when selecting the optimal route.

<HUAWEI> system-view
[~HUAWEI] bgp 100
[*HUAWEI-bgp] ipv4-family vpnv4
[*HUAWEI-bgp-af-vpnv4] bestroute igp-metric-ignore