Huawei AR1200 Series - Establishing an LDP LSP for the Labeled BGP Routes of the Public Network

2. Run:
bgp as-number
The BGP view is displayed.
3. Run:
peer ipv4-address route-policy route-policy-name export
The routing policy applied to advertise routes to the remote ASBR is configured.
4. Run:
quit
Return to the system view.
l Enabling the function of labeled IPv4 route exchange.
Perform the following steps on ASBRs:
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The view of the interface connecting the remote ASBR is displayed.
3. Run:
mpls
The MPLS function is enabled.
4. Run:
quit
Return to the system view.
5. Run:
bgp as-number
The BGP view is displayed.
6. Run:
peer ipv4-address label-route-capability [ check-tunnel-reachable ]
The labeled IPv4 route exchange capability with the remote ASBR is configured.
– If tunnel reachability checking is enabled, BGP advertises IPv4 unicast routes to
peers when routed tunnels are unreachable or advertises labeled routes to peers
when routed tunnels are reachable. This eliminates the risk of establishing an MP-
EBGP peer relationship between PEs over a faulty LSP because this will cause
data forwarding failures.
– If tunnel reachability checking is disabled, BGP advertises labeled routes to peers
whether the tunnels for imported routes are reachable or not.
----End
3.9.5 Establishing an LDP LSP for the Labeled BGP Routes of the
Public Network
By enabling LDP on ASBRs to allocate labels for BGP, you can establish LDP LSPs for labeled
BGP routes of the public network that are filtered in the IP prefix list
Huawei AR1200 Series Enterprise Routers
Configuration Guide - VPN 3 BGP MPLS IP VPN Configuration
Issue 01 (2012-04-20) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
116