3Com 3C13636 Configuration Manual page 632

3Com Router 3000 Ethernet Family
Configuration Guide
[Router A-Ethernet1/0/0] ospf dr-priority 100
[Router A-Ethernet1/0/0] quit
[Router A] router id 1.1.1.1
[Router A] ospf
[Router A-ospf] area 0
[Router A-ospf-area-0.0.0.0] network 192.1.1.0 0.0.0.255
# Configure Router B:
[Router B] interface ethernet 1/0/0
[Router B-Ethernet1/0/0] ip address 192.1.1.2 255.255.255.0
[Router B-Ethernet1/0/0] ospf dr-priority 0
[Router B-Ethernet1/0/0] quit
[Router B] router id 2.2.2.2
[Router B] ospf
[Router B-ospf] area 0
[Router B-ospf-area-0.0.0.0] network 192.1.1.0 0.0.0.255
# Configure Router C:
[Router C] interface ethernet 1/0/0
[Router C-Ethernet1/0/0] ip address 192.1.1.3 255.255.255.0
[Router C-Ethernet1/0/0] ospf dr-priority 2
[Router C-Ethernet1/0/0] quit
[Router C] router id 3.3.3.3
[Router C] ospf
[Router B-ospf] area 0
[Router B-ospf-area-0.0.0.0] network 192.1.1.0 0.0.0.255
# Configure Router D
[Router D] interface ethernet 1/0/0
[Router D-Ethernet1/0/0] ip address 192.1.1.4 255.255.255.0
[Router D-Ethernet1/0/0] quit
[Router D] router id 4.4.4.4
[Router D] ospf
[Router B-ospf] area 0
[Router B-ospf-area-0.0.0.0] network 192.1.1.0 0.0.0.255
In Router A, run display ospf peer to view the OSPF peers. Please note that Router A
has three peers.
All neighbors are in full state. This indicates that Router A forms neighboring
relationships with all its neighbors (Router A and Router C must form neighboring
relationships with all routers on the network so as to act on the DR and BDR on the
network. Router A is the DR and Router C the BDR on the network. All other neighbors
are DR other (this indicates that they are neither DR nor BDR).
Change the priority of Router B into 200:
3Com Corporation
4-37
Chapter 4 OSPF Configuration