[6006] in North American Network Operators' Group
Re: AGIS v BBN
daemon@ATHENA.MIT.EDU (Avi Freedman)
Fri Nov 1 19:58:09 1996
From: Avi Freedman <freedman@netaxs.com>
To: peter@agis.net (Peter Kline)
Date: Fri, 1 Nov 1996 19:51:55 -0500 (EST)
Cc: pritish@iocenter.net, kwe@6SigmaNets.com, nanog@merit.edu
In-Reply-To: <199611011841.NAA06874@agisgate.agis.net> from "Peter Kline" at Nov 1, 96 01:41:18 pm
> AGIS upgraded its router at the Sprint NAP to an RSP (from SP/SSP), and at
> the same time had to upgrade the FDDI interface. It hasn't really worked
> right since. It turns out through experimentation, any return traffic
> coming through Pennsauken dies on that router. So we've essentially taken
> the Sprint NAP router off the net while we figure out what's wrong. [That,
> by the way, is why it's so important to see as many networks in as many
> places as possible.]
>
> We've spent the time since try to determine if we have:
>
> - a FDDI problem
When switching cards/upgrading things, you could try setting the old
mac address in software for the new fddi interface, if the fddi card
itself is new (has a different mac address). This is a common problem
with hot-swapping ethernets - switches and other routers sometimes don't
expire arp properly.
> - an RSP problem
> - an undesirable SMDS/IOS interaction (we use SMDS to get into Pennsauken
> from our net)
11.0.9 works weel for us on 7505s.
> - some other undesireable hardware/IOS interaction
> - routing or other configuration on the Pennsauken router
> - routing or other configuration on any other router
>
> I'll let you know what we find out. We've pretty much eliminated routing
> or FDDI, and are looking at SMDS/IOS or some other config issue.
>
> Peter
These things are a bitch...
Good luck,
Avi
