3Com 7757 Configuration Manual page 322

322 C 34: OSPF C
HAPTER ONFIGURATION
Network diagram
Figure 73 DR election based on OSPF priority
Switch A
DR
Vlan- int1
Vlan- int1
Switch B
Device
Switch A
Switch B
Switch C
Switch D
Configuration procedure
# Configure SwitchA.
<SwitchA> system-view
[SwitchA] interface Vlan-interface 1
[SwitchA-Vlan-interface1] ip address 196.1.1.1 255.255.255.0
[SwitchA-Vlan-interface1] ospf dr-priority 100
[SwitchA] router id 1.1.1.1
[SwitchA] ospf
[SwitchA-ospf-1] area 0
[SwitchA-ospf-1-area-0.0.0.0] network 196.1.1.0 0.0.0.255
# Configure SwitchB.
<SwitchB> system-view
[SwitchB] interface Vlan-interface 1
[SwitchB-Vlan-interface1] ip address 196.1.1.2 255.255.255.0
[SwitchB-Vlan-interface1] ospf dr-priority 0
[SwitchB] router id 2.2.2.2
[SwitchB] ospf
[SwitchB-ospf-1] area 0
[SwitchB-ospf-1-area-0.0.0.0] network 196.1.1.0 0.0.0.255
# Configure SwitchC.
<SwitchC> system-view
[SwitchC] interface Vlan-interface 1
[SwitchC-Vlan-interface1] ip address 196.1.1.3 255.255.255.0
[SwitchC-Vlan-interface1] ospf dr-priority 2
[SwitchC] router id 3.3.3.3
[SwitchC] ospf
[SwitchC-ospf-1] area 0
[SwitchC-ospf-1-area-0.0.0.0] network 196.1.1.0 0.0.0.255
Switch D
Vlan -int1
Vlan-int1
BDR
Switch C
Interface IP address
Vlan-int1 196.1.1.1/24
Vlan-int1 196.1.1.2/24
Vlan-int1 196.1.1.3/24
Vlan-int1 196.1.1.4/24
Router ID Interface DR
priority
1.1.1.1 100
2.2.2.2 0
3.3.3.3 2
4.4.4.4 1