Configuring The Spf Calculation Interval; Disabling Ospf Packet Transmission On An Interface - H3C S7500 Series Operation Manual

Operation Manual – Routing Protocol
H3C S7500 Series Ethernet Switches
Enter system view
Enter interface view
Configure the LSA
transmission delay
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:
Enter system view
Enter OSPF view
Set the SPF calculation
interval

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:
To do...
system-view
interface interface-type
interface-number
ospf trans-delay
seconds
To do...
system-view
ospf [ process-id
[ router-id router-id ] ]
spf-schedule-interval
interval
Use the command...
Use the command...
4-21
Chapter 4 OSPF Configuration
Remarks
—
—
Required
1 second by default
Remarks
—
—
Required
5 seconds by default