🚀 go-pugleaf

bav@hobbes.ksu.ksu.edu (Brick Verser) writes:
>We've got an AGS+ running Version 8.2(7) which seems to pause every 30 
>seconds.  Seems likely this is RIP updates, but it seems unlikely that 
>the router should do absolutely nothing else for that period.  Is there 
>a simple configuration change that we've overlooked which will make this 
>all better?

I had a pleasant exchange with a very helpful Cisco person and we did a
little digging.  Basically, the Ciscos sometimes do this.  If there
are lots of of routes and large numbers of interfaces to which the routes 
must be broadcast, then it can take a while to update things after a
new RIP update comes along.  We have 24 Ethernet ports in this router 
and were receiving over 300 nets in the RIP updates.  That does indeed 
cause the router to be busy for a while.  And it seems that we've been 
suffering from some wild route flapping; in 5 weeks of uptime there have 
been over 50,000 routing updates--that's over one a minute and explains
why this was happening so regularly.

So it is a known problem with no immediate direct solution.  Our
solution is simple and pleasant; turn off advertising all these
routes.  We don't need 'em known, and I had been thinking about 
turning them off anyway just to reduce overhead.  So I'm happy now.

--Brick