(Message mtu:8) Date: 01 Dec 1997 12:37:05 MST From: Quan Nguyen Newsgroups: comp.dcom.sys.cisco Subject: Re: Cannot reach sites with MTU<1500 Approved: news@news.colorado.edu X-Return-Path: dhesi@rahul.net X-Nojunk-Status: OK 0 Organization: University of Colorado at Boulder Sender: daemon@lace.colorado.edu Distribution: world Nntp-Posting-Host: lace.colorado.edu Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII In-Reply-To: <3.0.32.19971201084456.009703c0@lint.cisco.com> X-Note1: message-id generated by recnews X-Note2: mail msgid was Xref: samba.rahul.net comp.dcom.sys.cisco:41041 On Mon, 1 Dec 1997, Wade Williams wrote: > At 02:55 PM 12/1/97 +1200, Franck Martin wrote: > >I had this strange problem with a very few sites on the net: > > > >www.hotmail.com > >www.compaq.com > >www.ausaid.gov.au > ... > > I've seen this behavior before. In our case, it was happening with the > Novell technical support web site. We could reach the first page of the > Novell site fine, but when we wanted to go to the tech support area (served > by a different server), we couldn't reach it. > ... To add to the tales of MTU size, we have seen problems in the opposite direction i.e. with Token-ring attached PCs using default MTU size > 1500. Those PCs are able to access almost everywhere except... altavista.digital.com, www.adobe.com and www.mcafee.com (the PCs are connected to 2502 routers). PCs running OS/2 don't have that problem, Win95 and NT have that problem. The solution again is to change the MTU size on those PCs to 1500. When we put a sniffer in front of the PC we see that the first part of the home page was missing. Couldn't tell who ate it. Quan, -----Quan Nguyen, RISQ Network Operations Center/Centre d'Operation----- McGill UNIVERSITY -o Voice (514)398-3709 Computing Center (Burnside Hall) ()/// FAX (514)398-6876 805 Sherbrooke St West, Rm 222 \ quan@CC.McGill.CA Montreal, Quebec H3A 2K6