H3C Technologies H3C S12500-X Series Switches - Manual (Page 342)

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Configuration prerequisites
Before you tune and optimize OSPFv3 networks, complete the following tasks:
• Configure IPv6 addresses for interfaces to ensure IPv6 connectivity between neighboring nodes.
• Enable OSPFv3.
402B
Configuring OSPFv3 timers
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the hello interval. ospfv3 timer hello seconds
[ instance instance-id ]
By default, the hello interval on P2P and
broadcast interfaces is 10 seconds.
4. Configure the dead interval. ospfv3 timer dead seconds
[ instance instance-id ]
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.
5. Configure the poll interval.
ospfv3 timer poll seconds
[ instance instance-id ] By default, the poll interval is 120
seconds.
6. Configure the LSA
retransmission interval. ospfv3 timer retransmit
interval [ instance instance-id ]
The default setting is 5 seconds.
The LSA retransmission interval cannot
be too short. Otherwise, unnecessary
retransmissions will occur.
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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 Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Specify the LSA transmission
delay.
ospfv3 trans-delay seconds
[ instance instance-id ] By default, the LSA transmission
delay is 1 second.