4000 Router Series MPLS Configuration Guide

[RouterB] ospf

[RouterB-ospf-1] import-route direct

[RouterB-ospf-1] import-route bgp

[RouterB-ospf-1] area 0

[RouterB-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255

[RouterB-ospf-1-area-0.0.0.0] network 2.2.2.9 0.0.0.0

[RouterB-ospf-1-area-0.0.0.0] quit

[RouterB-ospf-1] quit

# Configure Router C.

<RouterC> system-view

[RouterC] ospf

[RouterC-ospf-1] import-route direct

[RouterC-ospf-1] import-route bgp

[RouterC-ospf-1] area 0

[RouterC-ospf-1-area-0.0.0.0] network 30.1.1.0 0.0.0.255

[RouterC-ospf-1-area-0.0.0.0] network 3.3.3.9 0.0.0.0

[RouterC-ospf-1-area-0.0.0.0] quit

[RouterC-ospf-1] quit

# Configure Router D.

<RouterD> system-view

[RouterD] ospf

[RouterD-ospf-1] area 0

[RouterD-ospf-1-area-0.0.0.0] network 30.1.1.0 0.0.0.255

[RouterD-ospf-1-area-0.0.0.0] network 4.4.4.9 0.0.0.0

[RouterD-ospf-1-area-0.0.0.0] quit

[RouterD-ospf-1] quit

# After the previous configuration, execute the display ip routing-table command on each router.

You can see that the routers have learned the routes to one another, including the routes to the

Loopback interfaces. Take Router A as an example:

[RouterA] display ip routing-table

Destinations : 6 Routes : 6

Destination/Mask Proto Pre Cost NextHop Interfac

1.1.1.9/32 Direct 0 0 127.0.0.1 InLoop0

2.2.2.9/32 OSPF 10 1 10.1.1.2 Eth1/1

10.1.1.0/24 Direct 0 0 10.1.1.1 Eth1/1

10.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0

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

3. Configure BGP on Router B and Router C to make sure the ASs can communicate with each other:

# Configure Router B.

[RouterB] bgp 100

[RouterB-bgp] peer 20.1.1.2 as-number 200

[RouterB-bgp] ipv4-family unicast

[RouterB-bgp-ipv4] peer 20.1.1.2 enable

[RouterB-bgp-ipv4] import-route ospf