F3215-HP Load Balancing Module Network Management Configuration Guide-6PW101

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Tuning and optimizing OSPFv3 networks
This section describes configurations of OSPFv3 timers, interface DR priority, MTU check ignorance for
DD packets, and disabling interfaces from sending OSPFv3 packets.
The following are OSPFv3 timers:
• Packet timer—Specified to adjust topology convergence speed and network load.
• LSA delay timer—Specified especially for low-speed links.
• SPF timer—Specified to protect networks from being over-loaded due to frequent network changes.
For a broadcast network, you can configure DR priorities for interfaces to affect DR and BDR election.
After an interface is disabled from sending OSPFv3 packets, other routers cannot obtain any information
from the interface.
Configuration prerequisites
Before you tune and optimize OSPFv3 networks, complete the following tasks:
• Enable IPv6 packet forwarding.
• Configure OSPFv3 basic functions.
Configuring OSPFv3 timers
Make sure that the dead interval set on neighboring interfaces is not too short; otherwise, a neighbor is
easily considered down. Also, make sure that the LSA retransmission interval is not too short; otherwise,
unnecessary retransmissions might occur.
To configure OSPFv3 timers:
Ste
p
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 ]
Optional.
By default, the hello interval is 10
seconds on P2P and broadcast
interfaces.
4. Specify the poll interval.
ospfv3 timer poll seconds
[ instance instance-id ]
Optional.
By default, the poll interval is 120
seconds.
5. Configure the dead interval.
ospfv3 timer dead seconds
[ instance instance-id ]
Optional.
By default, the dead interval is 40
seconds on P2P and broadcast
interfaces.
6. Configure the LSA
retransmission interval.
ospfv3 timer retransmit interval
[ instance instance-id ]
Optional.
By default, the LSA retransmission
interval is 5 seconds.