R3102-R3103-HP 6600/HSR6600 Routers Layer 3 - IP Routing Configuration Guide
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[RouterA] interface GigabitEthernet 2/1/1
[RouterA-GigabitEthernet2/1/1] ospfv3 dr-priority 100
[RouterA-GigabitEthernet2/1/1] quit
# Configure the DR priority of GigabitEthernet 2/1/1 as 0 on Router B.
[RouterB] interface GigabitEthernet 2/1/1
[RouterB-GigabitEthernet2/1/1] ospfv3 dr-priority 0
[RouterB-GigabitEthernet2/1/1] quit
# Configure the DR priority of GigabitEthernet 2/1/1 as 2 on Router C.
[RouterC] interface GigabitEthernet 2/1/1
[RouterC-GigabitEthernet2/1/1] ospfv3 dr-priority 2
[RouterC-GigabitEthernet2/1/1] quit
# Display neighbor information on Router A. DR priorities have been updated, but the DR and BDR
are not changed.
[RouterA] display ospfv3 peer
OSPFv3 Area ID 0.0.0.0 (Process 1)
----------------------------------------------------------------------
Neighbor ID Pri State Dead Time Interface Instance ID
2.2.2.2 0 2-Way/DROther 00:00:38 GE2/1/1 0
3.3.3.3 2 Full/Backup 00:00:32 GE2/1/1 0
4.4.4.4 1 Full/DR 00:00:36 GE2/1/1 0
# Display neighbor information on Router D. Router D is still the DR.
[RouterD] display ospfv3 peer
OSPFv3 Area ID 0.0.0.0 (Process 1)
----------------------------------------------------------------------
Neighbor ID Pri State Dead Time Interface Instance ID
1.1.1.1 100 Full/DROther 00:00:33 GE2/1/1 0
2.2.2.2 0 Full/DROther 00:00:36 GE2/1/1 0
3.3.3.3 2 Full/Backup 00:00:40 GE2/1/1 0
4. Restart DR and BDR election:
# Use the shutdown and undo shutdown commands on interfaces to restart DR and BDR election.
(Details not shown.)
# Display neighbor information on Router A. Router C becomes the BDR.
[RouterA] display ospfv3 peer
OSPFv3 Area ID 0.0.0.0 (Process 1)
----------------------------------------------------------------------
Neighbor ID Pri State Dead Time Interface Instance ID
2.2.2.2 0 Full/DROther 00:00:31 GE2/1/1 0
3.3.3.3 2 Full/Backup 00:00:39 GE2/1/1 0
4.4.4.4 1 Full/DROther 00:00:37 GE2/1/1 0
# Display neighbor information on Router D. Router A becomes the DR.
[RouterD] display ospfv3 peer
OSPFv3 Area ID 0.0.0.0 (Process 1)
----------------------------------------------------------------------
Neighbor ID Pri State Dead Time Interface Instance ID
1.1.1.1 100 Full/DR 00:00:34 GE2/1/1 0
2.2.2.2 0 2-Way/DROther 00:00:34 GE2/1/1 0
3.3.3.3 2 Full/Backup 00:00:32 GE2/1/1 0