--On Wednesday, July 04, 2001 10:04:50 +0100 Pegg Damon
<Damon.Pegg@carrier1.com> wrote:
> Timers (holdtime) can be adjusted from the default 180 seconds to any
> 32bit integer other than 0, and it is recommended that the keepalives are
> readjusted in keeping to be 1/6 of the holdtime.
Out of interest, where did you get the 1/6th value from?
> The KEEPALIVE messages are quite short (19 octets), so we can use the
> formula 19*8/k, where k is keepalive frequency; hence 5 second keepalives
> and and 30 second holdtimer gives only 30bps i/o per neighbor.
> Processing, according to Cisco, is negligible.
However, under load, I've seen Cisco's fail to get the keepalives out on
time, causing some nasty instabilities.
Rick
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