From: Jamie Caesar (jamie.caesar@gmail.com)
Date: Tue Aug 09 2005 - 18:30:09 GMT-3
I've seen this happen on smaller routers, like the 2600s, when one of
the BGP processes would run and peg the CPU out at 100% for a few
seconds. I think it ran once a minute, so there was a short amount of
time each minute when some packets would get lost. Although, this was
on a 2651 taking full tables from the Internet, so this issue might
not apply to your lab equipment.
I'd just watch the extended ping and keep checking "show proc cpu | i
CPU" to see if the spikes correspond with the drops. You'll probably
only see them in the 5 second averages, because they never lasted for
more than a few seconds.
This may not be your issue, but worth a look.
Jamie
On 8/9/05, Julian Skelley <JulianS@itex.je> wrote:
> Hi
>
>
>
> I was hoping one of you guys may have seen this before.
>
>
>
> I have a connection to a BGP peer over an Ethernet link @ 100Mb. When I
> connect up and send 1000 ICMP packets over the line it runs perfect.
> When I bring up the BGP peer I loose 2 packets in every 1000 with no
> load on the line, other than the BGP updates.
>
>
>
> I have changed the cables, changed the routers (ISR's) ran different IOS
> ver's and have no ACL's or CAR on the interfaces.
>
>
>
> Unfortunately due to the location of the Lab I can not span a port and
> sniff it.
>
>
>
> Has anyone seen this or have an Idea what I could try next to get this
> sorted?
>
>
>
> Thanks for your help.
>
>
>
> J
>
>
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