Configuring Ospfv3 Timers; Specifying Lsa Transmission Delay; Specifying Spf Calculation Interval - HP 5500 EI series Configuration Manual

Configuring OSPFv3 timers

Step
1. Enter system view.
2. Enter interface view.
3. Configure the hello interval.
4. Configure the dead interval.
5. Configure the poll interval.
6. Configure the LSA
retransmission interval.

Specifying LSA transmission delay

Each LSA in the LSDB has an age that is incremented by 1 every second, but the age does not change
during transmission. Therefore, it is necessary to add a transmission delay into the age time, especially
for low-speed links.
To specify the LSA transmission delay on an interface:
Step
1. Enter system view.
2. Enter interface view.
3. Specify the LSA transmission
delay.

Specifying SPF calculation interval

LSDB changes result in SPF calculations. When the topology changes frequently, a large amount of
network and router resources are occupied by SPF calculation. You can adjust the SPF calculation
interval to reduce the impact.
When network changes are not frequent, the minimum-interval is adopted. If network changes become
frequent, the SPF calculation interval is incremented by incremental-interval × 2
generation times) each time an SPF calculation occurs until the maximum-interval is reached.
Command
system-view
interface interface-type
interface-number
ospfv3 timer hello seconds
[ instance instance-id ]
ospfv3 timer dead seconds
[ instance instance-id ]
ospfv3 timer poll seconds
[ instance instance-id ]
ospfv3 timer retransmit
interval [ instance instance-id ]
Command
system-view
interface interface-type
interface-number
ospfv3 trans-delay seconds
[ instance instance-id ]
347
Remarks
N/A
N/A
By default, the hello interval on P2P and
broadcast interfaces is 10 seconds.
By default, the dead interval on P2P and
broadcast interfaces is 40 seconds.
The dead interval set on neighboring
interfaces cannot be too short.
Otherwise, a neighbor is easily
considered down.
By default, the poll interval is 120
seconds.
The default setting is 5 seconds.
The LSA retransmission interval cannot
be too short. Otherwise, unnecessary
retransmissions will occur.
Remarks
N/A
N/A
By default, the LSA transmission
delay is 1 second.
(n is the number of
n-2