3Com 4200G # Assign a router ID to Switch a, # Configure an IP address for the Vlan interface

Configuring OSPF DR Election 103

Networking and Use OSPF to enable communication between devices in a broadcast network. Configuration Devices with higher performance should become the DR and BDR to improve Requirements network performance. Disable the devices with lower performance from taking

part in the DR/BDR election.

Based on the customer requirements and networking environment, assign proper priorities to interfaces.

Applicable Products

Product series	Software version	Hardware version
Switch 5500	Release V03.02.04	All versions
Switch 5500G	Release V03.02.04	All versions
Switch 4500	Release V03.03.00	All versions

Configuration Procedure ■ Configure Switch A.

# Assign a router ID to Switch A.

<SwitchA> system-view

[SwitchA] router id 1.1.1.1

# Configure an IP address for the VLAN interface.

[SwitchA] interface Vlan-interface 1 [SwitchA-Vlan-interface1] ip address 196.1.1.1 255.255.255.0

# Assign a DR priority to the VLAN interface.

[SwitchA-Vlan-interface1] ospf dr-priority 100

[SwitchA-Vlan-interface1] quit

# Enable OSPF and specify the VLAN interface to belong to OSPF area 0.

[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 Switch B.

# Assign a router ID to Switch B.

<SwitchB> system-view

[SwitchB] router id 2.2.2.2

#Configure the IP address of the VLAN interface attached to area 0 and assign a DR priority to the interface. Enable OSPF and specify the VLAN interface to belong to area 0.

[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-Vlan-interface1] quit [SwitchB] ospf [SwitchB-ospf-1] area 0

[SwitchB-ospf-1-area-0.0.0.0] network 196.1.1.0 0.0.0.255