H3C Technologies H3C SR8800 - Manual (Page 259)

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BGP and IGP synchronization configuration example
Network requirements
As shown in Figure 91 , all routers of company A belong to AS 65008 while all routers of company B
belong to AS 65009. AS 65008 and AS 65009 are connected through Router A and Router B. It is
required that Router A can access network 9.1.2.0/24 in AS 65009, and Router C can access network
8.1.1.0/24 in AS 65008.
Figure 91 Network diagram
Configuration procedure
1. Configure IP addresses for interfaces. (Details not shown)
2. Configure OSPF:
Enable OSPF in AS 65009, so that Router B can obtain the route to 9.1.2.0/24.
# Configure Router B.
system-view
[RouterB] ospf 1
[RouterB-ospf-1] area 0
[RouterB-ospf-1-area-0.0.0.0] network 2.2.2.2 0.0.0.0
[RouterB-ospf-1-area-0.0.0.0] network 9.1.1.0 0.0.0.255
[RouterB-ospf-1-area-0.0.0.0] quit
[RouterB-ospf-1] quit
# Configure Router C.
system-view
[RouterC] ospf 1
[RouterC-ospf-1] import-route direct
[RouterC-ospf-1] area 0
[RouterC-ospf-1-area-0.0.0.0] network 9.1.1.0 0.0.0.255
[RouterC-ospf-1-area-0.0.0.0] quit
[RouterC-ospf-1] quit
3. Configure the EBGP connection:
Configure the EBGP connection and inject network 8.1.1.0/24 to the BGP routing table of Router
A, so that Router B can obtain the route to 8.1.1.0/24.
# Configure Router A.
system-view
[RouterA] bgp 65008
[RouterA-bgp] router-id 1.1.1.1
[RouterA-bgp] peer 3.1.1.1 as-number 65009
[RouterA-bgp] network 8.1.1.0 24