OSPF LSA Throttling

Hi,

I was reading about the mentioned subject and came across the following
benefits of it:

1. Prior to the OSPF LSA Throttling feature, LSA generation was rate-limited
for 5 seconds. That meant that changes in an LSA could not be propagated in
milliseconds, so the OSPF network could not achieve millisecond convergence.

2. The OSPF LSA Throttling feature is enabled by default and allows faster
OSPF convergence (in milliseconds). This feature can be customized. One
command controls the generation (sending) of LSAs and another command
controls the receiving interval. This feature also provides a dynamic
mechanism to slow down the frequency of LSA updates in OSPF during times of
network instability.

I understood Point 1 as we can achieve LSA generation in less than 5 seconds
by specifying appropriate values in "timers throttle lsa all" command,
however, the second point is still unclear. We can modify the same values so
that LSA generation can be delayed but how will it be DYNAMIC because the
values that we will specify will be FIXED and LSA generation will have
delayed timers for all the cases, no matter the network is stable or
unstable

Please clarify the confusion

Thanks,
Malik

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Received on Fri Feb 25 2011 - 18:36:02 ART