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RE: (ASCEND) strange occasional network lag with MAX 4000

We were getting this same problem.  Great pings dropping to horrible for 4 or 5 
packets and
then clearing up again.  We were have some nasty packet loss for our dial-up 
users and then Wolfe
suggested turning RIP off on our dial-up boxes.  This seemed to solve both 
problems.  Although I don't
know how this might affect us in the future.

-Kevin McKee-

On Monday, October 06, 1997 6:16 PM, Pius Fischer [SMTP:pius@ienet.com] wrote:
>
> We've been noticing a strange problem with our MAX 4000. Every few minutes
> (usually about every two minutes) the response time of the MAX increases
> for a short period (up to about 15 seconds). For example, when pinging the
> MAX from a host on the same network, the response time is usually about
> 1-2 ms, but about once every two minutes that response time can jump to
> several hundred milliseconds in the worst case. This problem also affects
> packets going through the MAX - to a customer's P50, for example.
>
> We ran tcpdump, but we didn't notice any unusual traffic when the MAX's
> response time increased. We also couldn't correlate any activity on the MAX
> (e.g. incoming/outgoing calls, etc.) with the increased response time.
>
> This problem doesn't occur when pinging other hosts on the network, and
> we wouldn't have noticed it with the MAX if it hadn't been for a customer
> who noticed this problem when playing Quake across his ISDN connection.
> Apparently exactly once every two minutes he's seeing a significant
> lag and even some packet loss. And apparently this problem had never
> occurred before until it began sometime during the last few weeks.
>
> The MAX is running 5.0Ap27 (tik.m40) now, but the problem was also
> happening with 5.0Ap13.
>
> I know this is probably very little info to go on, but does anyone
> have any ideas on what might be causing this or has anyone else
> experienced something like this?
>
> Thanks very much for any help,
> Pius
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