bestroute router-id-ignore (BGP-VPN instance IPv4 address family view)

Function

The bestroute router-id-ignore command prevents BGP from comparing router IDs when selecting the optimal route.

The undo bestroute router-id-ignore command restores the default configuration.

By default, BGP uses the router ID as one of route selection rules.

Format

bestroute router-id-ignore

undo bestroute router-id-ignore

Parameters

None

Views

BGP-labeled VPN instance IPv4 address family view, BGP-VPN instance IPv4 address family view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

When receiving multiple routes with the same prefix from different peers, BGP needs to select an optimal route from these routes. To prevent BGP from comparing the router IDs contained in routes when it selects the optimal route, run the bestroute router-id-ignore command.

Configuration Impact

When selecting the optimal route, BGP does not compare the router IDs and peer IP addresses contained in routes after the bestroute router-id-ignore command is run.

Example

# Prevent BGP from comparing router IDs and peer IP addresses contained in routes when selecting the optimal route.

<HUAWEI> system-view
[~HUAWEI] ip vpn-instance vpna
[*HUAWEI-vpn-instance-vpna] ipv4-family
[*HUAWEI-vpn-instance-vpna-af-ipv4] route-distinguisher 100:1
[*HUAWEI-vpn-instance-vpna-af-ipv4] quit
[*HUAWEI-vpn-instance-vpna] quit
[*HUAWEI] bgp 100
[*HUAWEI-bgp] ipv4-family vpn-instance vpna
[*HUAWEI-bgp-vpna] bestroute router-id-ignore
<HUAWEI> system-view
[~HUAWEI] ip vpn-instance vpna
[*HUAWEI-vpn-instance-vpna] ipv4-family
[*HUAWEI-vpn-instance-vpna-af-ipv4] route-distinguisher 100:1
[*HUAWEI-vpn-instance-vpna-af-ipv4] quit
[*HUAWEI-vpn-instance-vpna] quit
[*HUAWEI] bgp 100
[*HUAWEI-bgp] vpn-instance vpna
[*HUAWEI-bgp-instance-vpna] quit
[*HUAWEI-bgp] ipv4-labeled-unicast vpn-instance vpna
[*HUAWEI-bgp-labeled-vpna] bestroute router-id-ignore