Operation Manual – Routing Protocol
Quidway S3900 Series Ethernet Switches-Release 1510 Chapter 4 OSPF Configuration
Huawei Technologies Proprietary
4-22
Note:
z Default Hello and Dead timer values will be restored once the network type is
changed.
z Do not set an LSA retransmission interval that is too short. Otherwise,
unnecessary retransmission will occur. LSA retransmission interval must be
greater than the round trip time of a packet between two routers.
4.7.3 Configuring the LSA transmission delay
Table 4-15 Configure the LSA transmission delay
Operation Command Description
Enter system view
system-view
—
Enter interface view
interface
interface-type
interface-number
Required
Configure the LSA transmission
delay
ospf trans-delay
seconds
Optional
By default, the LSA
transmission delay is
one second.
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 on 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 affection caused by frequent network changes.
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