mailing list archives
RE: web pages not loading (from certain networks) but not a routi ng i ssue.
From: "Young, Jason" <Jason.Young () anheuser-busch com>
Date: Fri, 7 Sep 2001 10:00:32 -0500
This reeks of an MTU problem somewhere.
Did you happen to have ICMP filtered to/from your sites recently? Remember, ICMP
isn't just that protocol that lets you ping stuff. You may have broken path MTU
CNS - Network Design, Anheuser-Busch
From: Nanog [mailto:Nanog () exchange ware net]
Sent: Friday, September 07, 2001 9:52 AM
To: nanog () merit edu
Subject: web pages not loading (from certain networks) but
not a routing
Interesting problem that seems to have started on Friday.
Here's the deal, it seems that certain (not all) web pages on
we host are not loading for certain customers. It started on
visitors on Verizon DSL waiting forever for pages to load.
Yesterday and today PacBell DSL and some Netcom customers started
This only seems to occur on HTTP traffic. If we have the
visitors try HTTPS
the pages load fine (with the normal encryption slowdown).
We've looked at Layers 1-4, and can't see any problems, ping
interfaces and cpus on routers, servers and switches look fine.
It's almost like it's a transparent cache "bug". Anyone know
if Inktomi, or
any major cache vendors rolled out any new code this week?
For that matter does anyone know what caches Verizon and SBC use for
Other variables: it only seems to occur on IIS based systems
(I know I know,
no flame wars or suggestions for replacements). Although it's
on all of our IIS servers.
Any clues are greatly appreciated.
- RE: web pages not loading (from certain networks) but not a routi ng i ssue. Young, Jason (Sep 07)