Huawei AR1200 series Configuration Manual page 118

Huawei AR1200 Series Enterprise Routers
Configuration Guide - VPN
Procedure
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Issue 01 (2012-04-20)
Configuring the PE
1. Run:
system-view
The system view is displayed.
2. Run:
bgp as-number
The BGP view is displayed.
3. Run:
peer ipv4-address label-route-capability
The exchange of the labeled IPv4 routes with the ASBR in the same AS is enabled.
Configuring the ASBR
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The view of the interface connected with the peer ASBR is displayed.
3. Run:
ip address ip-address { mask | mask-length }
The interface IP address is configured.
4. Run:
mpls
The MPLS capability is enabled.
5. Run:
quit
Return to the system view.
6. Run:
bgp as-number
The BGP view is displayed.
7. Run:
peer ipv4-address label-route-capability
The exchange of the labeled IPv4 routes with the PE of the same AS is enabled.
In the Option C solution, establish an inter-AS VPN LSP. The related PEs and ASBRs
exchange public network routes with the MPLS labels.
The ASBR establishes a common EBGP peer relationship with the remote ASBR to
switch labeled IPv4 routes.
The public network routes with the MPLS labels are advertised by the MP-BGP. Based
on RFC 3107 (Carrying Label Information in BGP-4), the label mapping information
of a route is carried by advertising BGP updates. This feature is implemented through
BGP extension attributes, which requires BGP peers to process the labeled IPv4 routes.
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