Example for configuring bgp as number substitution, Network requirements – H3C Technologies H3C S7500E Series Switches User Manual
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Routing Tables: Public
Destinations : 9 Routes : 9
Destination/Mask Proto Pre Cost NextHop Interface
20.1.1.0/24 Direct 0 0 20.1.1.1 Vlan11
20.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
20.1.1.2/32 Direct 0 0 20.1.1.2 Vlan11
30.1.1.0/24 OSPF 10 1574 100.1.1.2 Vlan12
100.1.1.0/24 Direct 0 0 100.1.1.1 Vlan12
100.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
120.1.1.0/24 OSPF 10 12 100.1.1.2 Vlan12
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
Issuing the display ospf sham-link command on the PEs, you should see the established sham link.
Takes PE 1 as an example:
[PE1] display ospf sham-link
OSPF Process 100 with Router ID 100.1.1.2
Sham Link:
Area RouterId Source-IP Destination-IP State Cost
0.0.0.1 100.1.1.2 3.3.3.3 5.5.5.5 P-2-P 10
Issuing the display ospf sham-link area command, you should see that the status of the peer is Full:
[PE1] display ospf sham-link area 1
OSPF Process 100 with Router ID 100.1.1.2
Sham-Link: 3.3.3.3 --> 5.5.5.5
Neighbour State: Full
Area: 0.0.0.1
Cost: 10 State: P-2-P, Type: Sham
Timers: Hello 10 , Dead 40 , Retransmit 5 , Transmit Delay 1
Example for 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. In addition, they use the same AS number 600.