Router Problem Caused by Errant Host

Article View: comp.dcom.sys.cisco

Article #332

Back to comp.dcom.sys.cisco Previous Next

#332

From: Jay Keller
Date: Fri, 28 Aug 1992 16:50

23 lines
1179 bytes

If my questions are naive, I apologize, but I am fairly new to the
science of networking.
 
We recently experienced a failure of our Cisco router due to the following
scenario:

One of our workstations, running IBM TCP/IP for OS/2, was improperly
configured.  The file that controls the IP address and the default routing
was typo'ed such that the machine was accidentally assigned the same IP address
as the Cisco router.  This brought down a major part of our network as the
Cisco stopped routing.  Several hours were spent finding the problem.

First of all, what troubleshooting techniques would have led our team to
discover the exact nature of the problem more quickly?

Secondly, is there any way to protect against this sort of thing?

Regards,
 
Jay Keller
ROLM Systems
Santa Clara, CA, USA
badboy@netcom.com

Technical Details

Message-ID: <9vdnx8#.badboy@netcom.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!decwrl!csus.edu!netcom.com!badboy

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!decwrl!csus.edu!netcom.com!badboy
From: badboy@netcom.com (Jay Keller)
Newsgroups: comp.dcom.sys.cisco
Subject: Router Problem Caused by Errant Host
Message-ID: <9vdnx8#.badboy@netcom.com>
Date: 28 Aug 92 16:50:19 GMT
Organization: Netcom - Online Communication Services (408 241-9760 guest)
Lines: 23