376
[SwitchD-Vlan-interface200] quit
# Display neighbor information on Switch A. The switches have the same default DR priority 1,
so Switch D (the switch with the highest router ID) is elected as the DR, and Switch C is the
BDR.
[SwitchA] display ospfv3 peer
OSPFv3 Process 1 with Router ID 1.1.1.1
Area: 0.0.0.0
-------------------------------------------------------------------------
Router ID Pri State Dead-Time InstID Interface
2.2.2.2 1 2-Way/DROther 00:00:36 0 Vlan200
3.3.3.3 1 Full/BDR 00:00:35 0 Vlan100
4.4.4.4 1 Full/DR 00:00:33 0 Vlan200
# Display neighbor information on Switch D. The neighbor states are all full.
[SwitchD] display ospfv3 peer
OSPFv3 Process 1 with Router ID 4.4.4.4
Area: 0.0.0.0
-------------------------------------------------------------------------
Router ID Pri State Dead-Time InstID Interface
1.1.1.1 1 Full/DROther 00:00:30 0 Vlan100
2.2.2.2 1 Full/DROther 00:00:37 0 Vlan200
3.3.3.3 1 Full/BDR 00:00:31 0 Vlan100
3. Configure router priorities for interfaces:
# Set the router priority of VLAN-interface 100 to 100 on Switch A.
[SwitchA] interface Vlan-interface 100
[SwitchA-Vlan-interface100] ospfv3 dr-priority 100
[SwitchA-Vlan-interface100] quit
# Set the router priority of VLAN-interface 200 to 0 on Switch B.
[SwitchB] interface vlan-interface 200
[SwitchB-Vlan-interface200] ospfv3 dr-priority 0
[SwitchB-Vlan-interface200] quit
# Set the router priority of VLAN-interface 100 to 2 on Switch C.
[SwitchC] interface Vlan-interface 100
[SwitchC-Vlan-interface100] ospfv3 dr-priority 2
[SwitchC-Vlan-interface100] quit
# Display neighbor information on Switch A. Router priorities have been updated, but the DR
and BDR are not changed.
[SwitchA] display ospfv3 peer
OSPFv3 Process 1 with Router ID 1.1.1.1
Area: 0.0.0.0
-------------------------------------------------------------------------
Router ID Pri State Dead-Time InstID Interface
2.2.2.2 0 2-Way/DROther 00:00:36 0 Vlan200
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