3Com 3C13636 Configuration Manual page 637

3Com Router 3000 Ethernet Family
Configuration Guide
[RouterA-serial1/0/0] ip address 10.0.0.1 255.0.0.0
[RouterA-serial1/0/0] interface ethernet0/0/0
[RouterA-ethernet 0/0/0] ip address 20.0.0.1 255.0.0.0
[RouterA- ethernet 0/0/0] interface ethernet0/0/1
[RouterA- ethernet 0/0/1] ip address 30.0.0.1 255.0.0.0
[RouterA- ethernet 0/0/1] quit
[RouterA] ospf
[RouterA-ospf-1] area 0
[RouterA-ospf-1-area-0.0.0.0]
[RouterA-ospf-1 -area-0.0.0.0] network 20.0.0.1 0.255.255.255
[RouterA-ospf-1 -area-0.0.0.0] network 30.0.0.1 0.255.255.255
# Configure RouterB:
[RouterB] router id 2.2.2.2
[RouterB] internet serial0/0/0
[RouterB-serial0/0/0] ip address 10.0.0.2 255.0.0.0
[RouterB-serial0/0/0] Interface ethernet 1/0/0
[RouterB-ethernet 1/0/0] ip address 40.0.0.1 255.0.0.0
[RouterB-ethernet 1/0/0] quit
[RouterB] ospf
[RouterB-ospf-1] area 0
[RouterB-ospf-1-area-0.0.0.0] network 10.0.0.2
[RouterB-ospf-1-area-0.0.0.0] area 1
[RouterB-ospf-1-area-0.0.0.1] network 40.0.0.1
[RouterB-ospf-1-area-0.0.0.1] stub
# Configure RouterC:
[RouterC] router id 3.3.3.3
[RouterC] interface ethernet 1/0/0
[RouterC-ethernet 1/0/0] ip address 40.0.0.2 255.0.0.0
[RouterC-ethernet 1/0/0] quit
[RouterC] ospf
[RouterC-ospf-1] area 1
[RouterC-ospf-1-area-0.0.0.1] network 40.0.0.2
[RouterC-ospf-1-area-0.0.0.1] stub
Now, on RouterC, in addition to inter-area routes discovered by OSPF, there should be
a default route of 0.0.0.0/0.
If you configure the stub nosummary command instead of the stub command on ABR
Router B, area1 will become completely a STUB area, and RouterC no longer has any
inter-area routes but a default route.
network 10.0.0.1 0.255.255.255
3Com Corporation
4-42
Chapter 4 OSPF Configuration
0.255.255.255
0.255.255.255
0.255.255.255