peer check-tunnel-reachable

Function

The peer check-tunnel-reachable command enables a peer in a labeled address family to check the reachability of a tunnel between the BGP peers.

The undo peer check-tunnel-reachable command disables a peer in a labeled address family from checking the reachability of a tunnel between BGP peers.

By default, a peer in a labeled address family is not enabled to check the reachability of a tunnel between BGP peers.

Format

peer ipv4-address check-tunnel-reachable

undo peer ipv4-address check-tunnel-reachable

Parameters

Parameter	Description	Value
ipv4-address	Specifies the IPv4 address of a BGP peer.	The value is in dotted decimal notation.
check-tunnel-reachable	Checks the tunnel reachability before an imported route functions as a labeled route.	-

Parameter

Description

Value

ipv4-address

Specifies the IPv4 address of a BGP peer.

The value is in dotted decimal notation.

check-tunnel-reachable

Checks the tunnel reachability before an imported route functions as a labeled route.

Views

BGP-labeled VPN instance IPv4 address family view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

To enable a peer in a labeled address family to check reachability of a tunnel between the BGP peers, run the peer check-tunnel-reachable command.

Precautions

After the command is run, the device advertises the routes imported in the labeled address family to the specified peer only when the tunnel to the peer is up. There is no limit on the tunnel type.

Example

# Enable BGP to send labeled routes and check the reachability of the tunnel between BGP peers.

<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-labeled-unicast vpn-instance vpna
[*HUAWEI-bgp-labeled-vpna] peer 10.1.1.1 enable
[*HUAWEI-bgp-labeled-vpna] peer 10.1.1.1 check-tunnel-reachable