Configuring Spf Calculation Interval; Configuring Lsa Minimum Repeat Arrival Interval; Configuring Lsa Generation Interval - 3Com MSR 50 Series Configuration Manual

948 C 58: OSPF C
HAPTER
Configuring SPF
Calculation Interval
n
Configuring LSA
Minimum Repeat Arrival
Interval
n
Configuring LSA
Generation Interval
ONFIGURATION
Link State Database changes lead to SPF calculations. When an OSPF network
changes frequently, a large amount of network resources will be occupied,
reducing working efficiency of routers. You can adjust the SPF calculation interval
for the network to reduce negative influence.
Follow these steps to adjust the SPF calculation interval:
To do...
Enter system view
Enter OSPF view
Set the SPF calculation interval spf-schedule-interval
With this command configured, when network changes are not frequent, SPF
calculation applies at the minimum-interval. If network changes become frequent,
SPF calculation interval is incremented by incremental-interval•2
number of calculation times) each time a calculation occurs, up to the
maximum-interval.
When an interface receives an LSA that is the same with the previously received
LSA within a specified interval, the LSA minimum repeat arrival interval, the
interface will discard the LSA.
Follow these steps to configure the LSA minimum repeat arrival interval:
To do...
Enter system view
Enter OSPF view
Configure the LSA minimum
repeat arrival interval
The interval set by the lsa-arrival-interval command should be smaller or equal
to the interval set by the lsa-generation-interval command.
With this feature configured, you can protect network resources and routers from
being over consumed due to frequent network changes.
Follow these steps to configure LSA generation interval:
To do...
Enter system view
Enter OSPF view
Use the command...
system-view
ospf [ process-id | router-id
router-id | vpn-instance
instance-name ] *
maximum-interval
[ minimum-interval
[ incremental-interval ] ]
Use the command...
system-view
ospf [ process-id | router-id
router-id | vpn-instance
instance-name ] *
lsa-arrival-interval interval
Use the command...
system-view
ospf [ process-id | router-id
router-id | vpn-instance
instance-name ] *
Remarks
-
-
Optional
By default, the interval is 5
seconds
n-2
(n is the
Remarks
-
-
Optional
Defaults to 1000 milliseconds
Remarks
-
Required