H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – Routing Protocol
H3C S7500 Series Ethernet Switches Chapter 4 OSPF Configuration
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To do... Use the command... Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
—
Configure the LSA
transmission delay
ospf trans-delay
seconds
Required
1 second by default
 Note:
The transmission of OSPF packets on a link also takes time. Therefore, a
transmission delay should be added to the aging time of LSAs before the LSAs are
transmitted. For a low-speed link, pay close attention to this configuration.
4.7.4 Configuring the SPF Calculation Interval
Whenever the LSDB of OSPF is changed, the shortest paths need to be recalculated.
When the network changes frequently, calculating the shortest paths immediately
after LSDB changes will consume enormous resources and affect the operation
efficiency of the router. By adjusting the minimum SPF calculation interval, you can
lighten the negative effects caused by frequent network changes.
Follow these steps to set the SPF calculation interval:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter OSPF view
ospf [ process-id
[ router-id router-id ] ]
—
Set the SPF calculation
interval
spf-schedule-interval
interval
Required
5 seconds by default
4.7.5 Disabling OSPF Packet Transmission on an Interface
To prevent OSPF routing information from being acquired by the routers on a certain
network, use the silent-interface command to disable OSPF packet transmission on
the corresponding interface.
Follow these steps to disable OSPF packet transmission through an interface: