Huawei Quidway S3900 Series - Setting the Dr Priority on an Ospf Interface

Operation Manual – Routing Protocol
Quidway S3900 Series Ethernet Switches-Release 1510 Chapter 4 OSPF Configuration
Huawei Technologies Proprietary
4-15
Table 4-5 Set NBMA neighbor
Operation Command Description
Enter system view
system-view
—
Enter OSPF view
ospf [ process-id
[ router-id router-id ] ]
Required
Set an NBMA neighbor
peer ip-address
[ dr-priority
dr-priority ]
Required
By default, the priority
for the neighbor of an
NBMA interface is 1.
4.5.4 Setting the DR Priority on an OSPF Interface
You can control the DR/BDR election on a broadcast or NBMA network by configuring
the DR priorities of interfaces.
Table 4-6 Set the DR priority on an OSPF interface
Operation Command Description
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
Required
Set the DR priority on the
OSPF interface
ospf dr-priority priority
Optional
The default DR priority
is 1.
 Note:
The DR priorities configured by the ospf dr-priority command and the peer
command have different purpose:
z The priority set with the ospf dr-priority command is used for actual DR election.
z The priority set with the peer command is used to indicate if a neighbor has the
right to vote. If you specify the priority to 0 when configuring a neighbor, the local
router will believe that the neighbor has no right to vote and sends no Hello packet
to it. This configuration can reduce the number of Hello packets on the network
during the election of DR and BDR. However, if the local router is already a DR or
BDR, it will send Hello packets to the neighbor whose DR priority is 0 to establish
the neighboring relationship.