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Configuring a DR Priority for an Interface
Context
The DR priority on a switch interface determines whether the interface is qualified for the DR election. If the DR priority is 0, the switch cannot be elected as a DR or BDR.
Perform the following operations on the switch that runs OSPFv3.
Procedure
- Run system-view
The system view is displayed.
- Run interface interface-type interface-number
The interface view is displayed.
- (Optional) On an Ethernet interface, run undo portswitch
The interface is switched to Layer 3 mode.
By default, an Ethernet interface works in Layer 2 mode. - Run ospfv3 dr-priority priority [ instance instance-id ]
A DR priority is set for the interface.
Follow-up Procedure
After the DR priority is changed, you can re-elect a DR or BDR. However, this will interrupt OSPFv3 neighbor relationships between switches and is therefore only used when necessary. The methods to re-elect a DR or BDR are as follows:
Restart all switches.
Run the shutdown and undo shutdown commands on the interface on which the OSPFv3 neighbor relationship is set up.
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