Huawei AR1200 series Configuration Manual page 88

Huawei AR1200 Series Enterprise Routers
Configuration Guide - VPN
l
Issue 01 (2012-04-20)
CAUTION
In the case of multi-homed CE, the BGP AS substitution function may lead to route
loops.
Perform the following steps on the CE:
1. Run:
system-view
The system view is displayed.
2. Run:
bgp as-number
The BGP view is displayed.
3. Run:
peer ipv4-address as-number as-number
The PE is specified as the peer of the VPN.
4. (Optional) Run:
peer { ipv4-address | group-name } ebgp-max-hop [ hop-count ]
The maximum number of hops is configured for the EBGP connection.
Generally, one or multiple directly-connected physical link(s) exist between a pair of
EBGP peers. If not, use the peer ebgp-max-hop command to ensure that the TCP
connection can be set up between the EBGP peers through multiple hops.
5. Run:
import-route { direct | static | rip process-id | ospf process-id | isis
process-id } [ med med | route-policy route-policy-name ]*
Routes of the local site are imported.
The CE must advertise the reachable VPN segment addresses to the attached PE.
Through the PE, the addresses are advertised to the remote CEs. In applications, the
types of routes to be imported may be different.
Configure IBGP between a PE and a CE.
Perform the following steps on the PE:
1. Run:
system-view
The system view is displayed.
2. Run:
bgp as-number
The BGP view is displayed.
3. Run:
ipv4-family vpn-instance vpn-instance-name
The BGP-VPN instance IPv4 address family view is displayed.
4. (Optional) Run:
as-number as-number
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