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DES-7200 Configuration Guide Chapter 5 OSPF
Configuration
5-28
OSPFv3 DR election
SwitchA, SwitchB, SwitchC and SwitchD are in the same area (Area 0) and are
interconnected via vlan 100. Switch A and Switch B are devices with the best
configuration and the highest stability on the network.
Application Requirements
Corresponding requirements: By adjusting the priority, configure SwitchA as the
DR and SwitchB as the BDR in order to avoid route oscillation.
Configuration Tips
Configure the priority of the interface of expected DR (Switch A) to he highest
value (150 in this example) and the priority of the interface of BDR (Switch B) to
the second highest value (50 in this example)
The default priority of interface is 1, and DR/BDR can be determined according to
router-id. Generally, the router with the largest router-id will become DR, and the
router with the second largest router-id will become BDR.
Configuration Steps
SwitchA
Step 1: Create VLAN and configure IPv6 address
SwitchA# conf
Enter configuration commands, one per line. End with CNTL/Z.
! Create and configure interface vlan100
SwitchA(config)# vlan 100
SwitchA(config-vlan)#exit
SwitchA(config)#interface vlan 100
SwitchA(config-if-VLAN 100)#ipv6 enable