309
Sham link: 3.3.3.3 --> 5.5.5.5
Neighbor ID: 120.1.1.2 State: Full
Area: 0.0.0.1
Cost: 1 State: P-2-P Type: Sham
Timers: Hello 10, Dead 40, Retransmit 5, Transmit Delay 1
Request list: 0 Retransmit list: 0
Configuring BGP AS number substitution
Network requirements
As shown in
, CE 1 and CE 2 belong to VPN 1 and are connected to PE 1 and PE 2,
respectively. The two CEs have the same AS number, 600.
Configure BGP AS number substitution on the PEs to enable the CEs to communicate with each
other.
Figure 83 Network diagram
Table 24 Interface and IP address assignment
Device
Interface
IP address
Device
Interface
IP address
CE 1
GE1/1/1
10.1.1.1/24 P Loop0
2.2.2.9/32
GE1/1/2
100.1.1.1/24
GE1/1/1
20.1.1.2/24
PE 1
Loop0
1.1.1.9/32
GE1/1/2
30.1.1.1/24
GE1/1/1
10.1.1.2/24
PE
2 Loop0
3.3.3.9/32
GE1/1/2
20.1.1.1/24
GE1/1/1
10.2.1.2/24
CE 2
GE1/1/1
10.2.1.1/24
GE1/1/2
30.1.1.2/24
GE1/1/2
200.1.1.1/24
Configuration procedure
1.
Configure basic MPLS L3VPN:
