[nsp] BGP4 and high Ping Times

[Lukas Krattiger]

Well, I know that icmp has low priority, but how can I tweak it ? 
CEF is disabled and with 12 of 15 Peers we do have a PeerGroup, the rest are
upstreams with specific rules. The thing with drpooing routes and not
receiving full routes is a little bit difficult for an ISP so ...
... What do you guys recommend to tweak this box, any ideas other then
disabling CEF ? :-)

Thanks
-Lukas


-----Original Message-----
From: Stephen J. Wilcox [mailto:steve at telecomplete.co.uk] 
Sent: Donnerstag, 30. Januar 2003 19:00
To: Lukas Krattiger
Cc: cisco-nsp at puck.nether.net
Subject: Re: [nsp] BGP4 and high Ping Times


Yes, you get this when the BGP scanner runs which is once per minute, as the
7206 is a single processor this means whilst its churning 250000 routes your
packet latency goes up.

Try tweaking scheduler for a quick fix, if you dont need full BGP tables try
dropping some routes. Failing that its a bigger router...

(I assume you have got the basic stuff like cef running and if you have many
peers you have groups configured)

Steve

On Thu, 30 Jan 2003, Lukas Krattiger wrote:

> Greetings,
> 
> I'm wondering if some other people have the same issue with a cisco 
> 7206VXR and BGP4. Our current Core-Router is a 7206VXR (NPE300) with 
> E3 and T3 cards, we are running IOS 12.1(14) and there is the max of 
> memory inside.
> >From our Upstream-Providers (2 sometimes 3) we receive full routes.
> The thing I don't understand is, why are we getting always this high 
> ping times every minute (maybe while we are receiving the updates, I 
> think so), is there a workaround to solve this issue or is it just "as 
> is" ?
> 
> Thanks for any reply
> 
> -Lukas
> 
> 
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