Huawei AR1200 series Configuration Manual page 210

Huawei AR1200 Series Enterprise Routers
Configuration Guide - VPN
Procedure
Step 1 Configure IGP on the MPLS backbone networks of AS100 and AS200. In this manner, PEs
within each MPLS backbone network can be interconnected with ASBRs.
In this example, IGP adopts OSPF, and the specific configuration steps are not mentioned here.
After the configuration, the OSPF neighbor relationship can be established between the ASBR
and the PE in the same AS. Run the display ospf peercommand to find that the neighboring
state is Full.
Take PE1 as an example:
<PE1> display ospf peer
Area 0.0.0.0 interface 172.1.1.2(GigabitEthernet1/0/0)'s neighbors
Router ID: 2.2.2.9
The ASBR and PE in the same AS can learn the IP address of the loopback1 interface of each
other. They can also ping each other successfully.
Step 2 Establish the EBGP peer relationship between the ASBRs.
# Configure ASBR1.
[ASBR1] bgp 100
[ASBR1-bgp] peer 192.1.1.2 as-number 200
[ASBR1-bgp] quit
# Configure ASBR2.
[ASBR2] bgp 200
[ASBR2-bgp] peer 192.1.1.1 as-number 100
[ASBR2-bgp] quit
After the configuration, run the display bgp peer command on ASBRs to find the adjacency
status is Established.
Take ASBR1 as an example:
[ASBR1] display bgp peer
BGP local router ID : 2.2.2.9
Local AS number : 100
Total number of peers : 1
Peer
192.1.1.2
Step 3 Advertise the routes of a PE in an AS to the remote PE.
# On ASBR1, advertise the loopback address of PE1 to ASBR2.
[ASBR1] route-policy policy0 permit node 1
Issue 01 (2012-04-20)
NOTE
Advertise the 32-bit IP address of the loopback interface, that is, the LSR ID, by using OSPF.
OSPF Process 1 with Router ID 1.1.1.9
Neighbors
State: Full Mode:Nbr is
DR: None BDR: None
Dead timer due in 28
Neighbor is up for 00:01:04
Authentication Sequence: [ 0 ]
V AS MsgRcvd
4 200
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Address: 172.1.1.1
Master Priority: 1
MTU: 0
sec
Peers in established state : 1
MsgSent OutQ
129 134 0 01:39:21 Established
3 BGP MPLS IP VPN Configuration
Up/Down State PrefRcv
1
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