Operation Manual – Routing ProtocolH3C S7500 Series Ethernet Switches Chapter 4 OSPF Configuration4-21To do... Use the command... RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Configure the LSAtransmission delayospf trans-delaysecondsRequired1 second by defaultNote:The transmission of OSPF packets on a link also takes time. Therefore, atransmission delay should be added to the aging time of LSAs before the LSAs aretransmitted. For a low-speed link, pay close attention to this configuration.4.7.4 Configuring the SPF Calculation IntervalWhenever the LSDB of OSPF is changed, the shortest paths need to be recalculated.When the network changes frequently, calculating the shortest paths immediatelyafter LSDB changes will consume enormous resources and affect the operationefficiency of the router. By adjusting the minimum SPF calculation interval, you canlighten the negative effects caused by frequent network changes.Follow these steps to set the SPF calculation interval:To do... Use the command... RemarksEnter system view system-view —Enter OSPF view ospf [ process-id[ router-id router-id ] ] —Set the SPF calculationintervalspf-schedule-intervalintervalRequired5 seconds by default4.7.5 Disabling OSPF Packet Transmission on an InterfaceTo prevent OSPF routing information from being acquired by the routers on a certainnetwork, use the silent-interface command to disable OSPF packet transmission onthe corresponding interface.Follow these steps to disable OSPF packet transmission through an interface:
