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Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 7 Configuring OSPFv3
Configuring Advanced OSPFv3
Modifying the Default Timers
OSPFv3 includes a number of timers that control the behavior of protocol messages and shortest path
first (SPF) calculations. OSPFv3 includes the following optional timer parameters:
• LSA arrival time—Sets the minimum interval allowed between LSAs arriving from a neighbor.
LSAs that arrive faster than this time are dropped.
• Pacing LSAs—Set the interval at which LSAs are collected into a group and refreshed,
checksummed, or aged. This timer controls how frequently LSA updates occur and optimizes how
many are sent in an LSA update message (see the “Flooding and LSA Group Pacing” section on
page 7-7).
• Throttle LSAs—Set rate limits for generating LSAs. This timer controls how frequently an LSA is
generated if no topology change occurs.
• Throttle SPF calculation—Controls how frequently the SPF calculation is run.
At the interface level, you can also control the following timers:
• Retransmit interval—Sets the estimated time between successive LSAs.
• Transmit delay—Sets the estimated time to transmit an LSA to a neighbor.
See the “Configuring Networks in OSPFv3” section on page 7-17 for information on the hello interval
and dead timer.
BEFORE YOU BEGIN
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1. config t
2. router ospfv3 instance-tag
3. timers lsa-arrival msec
4. timers lsa-group-pacing seconds
5. timers throttle lsa e start-time hold-interval max-timel
6. address-family ipv6 unicast
7. timers throttle spf delay-time hold-time
8. interface type slot/port
9. ospfv3 retransmit-interval seconds
10. ospfv3 transmit-delay seconds
11. copy running-config startup-config
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