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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: 92 Byte ICMP Blocking Problem
Hi Chris, We were having the same exact problem with 4 TNTs that we have. In the end, we shut off ip-route-cache on the TNTs and that fixed the problem with them. Richard On Fri, 12 Sep 2003 12:52:58 -0500 Chris Adams <[email protected]> wrote: > > Once upon a time, Richard J.Sears <[email protected]> said: > > Since then, we have been hammered with customer complaints concerning > > the inability to talk to mail servers and ssh to their servers, as well > > as other weird network issues, all centering around the time we started > > blocking 92 Byte ICMP packets. > > > > Has anyone else seen this, and if so, is the only resolution to stop the > > blockage of 92 Byte ICMP Packets..? > > Yes. As soon as we put the policy route map in place, we had some > people unable to talk via SSH, SMTP, or POP3. It was random: one person > here in the office couldn't SSH to a particular server. He could SSH to > other servers, and the rest of us could SSH to the server he could not. > We had similar experiences with SMTP and POP3. When we took the policy > route map back out, the problems went away. > > This is with IOS 12.0(25)S1 on a 7513 doing dCEF. We put the policy > route map on the FE interface linking this router to the POP core > router; this router has MC-T3 interfaces and ethernets to Ascend TNTs > and such. The intent was to stop the 92 byte ICMP echos from reaching > the Ascend TNTs, since several of them were rebooting constantly. > > -- > Chris Adams <[email protected]> > Systems and Network Administrator - HiWAAY Internet Services > I don't speak for anybody but myself - that's enough trouble.
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