Operation Manual – Routing ProtocolH3C S7500 Series Ethernet Switches Chapter 4 OSPF Configuration4-15To do... Use the command... RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Set the DR priority on theOSPF interface ospf dr-priority value RequiredThe default DR priority is 1.Note:The DR priorities configured by the ospf dr-priority command and the peercommand 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 theright to vote. If you specify the priority to 0 when configuring a neighbor, the localrouter will believe that the neighbor has no right to vote and sends no Hello packetto it. This configuration can reduce the number of Hello packets on the networkduring the election of DR and BDR. However, if the local router is already a DR orBDR, it will send Hello packets to the neighbor whose DR priority is 0 to establishthe neighboring relationship.4.6 OSPF Route ControlPerform the following configurations to control the advertisement and reception of therouting information discovered by OSPF and import routing information discovered byother protocols.4.6.1 Configuration PrerequisitesBefore configuring OSPF route control, perform the following tasks:z Configuring the network layer addresses of interfaces so that the adjacent nodesare reachable to each other at the network layerz Completing basic OSPF configurationz Configuring filter list to filter routing information4.6.2 Configuring OSPF Route SummaryThe configuration of OSPF route summary includes:z Configuring ABR route summaryz Configuring ASBR route summary for imported routesFollow these steps to configure ABR route summary:
