[58088] in Hotline Meeting
Case 254681: Re: W20-401 Ultra5 (UA) Jack Issue:
daemon@ATHENA.MIT.EDU (vdist-trb@MIT.EDU)
Mon Jan 28 16:43:08 2002
Message-Id: <200201282140.QAA00923@hampster.mit.edu>
Date: Mon, 28 Jan 2002 16:40:57
From: vdist-trb@MIT.EDU
To: LARUGSI@MIT.EDU
Cc: hotline@MIT.EDU, hardserv@MIT.EDU
Errors-To: cadm@MIT.EDU
Lou,
Although the jack is kinda old, I can't find anything physically wrong with it.
I tried recrosswiring the drop, moving the drop to a newly-installed switch, testing for error packets coming from the workstation, and testing the cable integrity between W20-405-2-2 and the closet. Everything tested OK on the network side and no cable faults were found.
Pings to ua.mit.edu show no packet loss:
----ua.mit.edu PING Statistics----
250 packets transmitted, 250 packets received, 0% packet loss
round-trip (ms) min/avg/max = 0/2/75
I only found one thing that didn't make sense. When I plugged my tester directly into the workstation's NIC, it intermittently drops its Ethernet link and fails to send out Ethernet frames. When I run the same test on another Ultra-5 in the 575 cluster, it maintains link and sends out frames like it's supposed to. This could indicate a problem with the workstation's NIC or a related hardware problem.
The only other network test that I can run is to mind is to bring over a laptop and try downloading/uploading large amounts of data, and see what happens. Let me know if you want me to try it.
-Chris
[Sent Email to Client (cggriffi, 01/28/2002 16:40:57)]
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Entry: Email Received (daemon, 01/24/2002 19:06:38)
Date: Thu, 24 Jan 2002 19:06:35 -0500
To: vdist-trb@MIT.EDU
From: "Louis A. Isgur" <larugsi@MIT.EDU>
Cc: hotline@MIT.EDU, hardserv@MIT.EDU
Subject: Re: W20-401 Ultra5 (UA) Jack Issue:
Hi all,
We currently have a system (Ultra5) named (UA), which resides in the
W20-401 location. The system is experiencing extreme slowness, and from time
to time hangs on the watch-net command, which is a quick test (on a sun system)
for network integrity. Thats the best symptoms I can give you at this moment.
I suspect that the jack labeled W20405-2 is having problems. It is an old
styled jack, which just hangs in limbo. Please check out, and report back to
hotline when you can.
I have a contact name of Stephanie Leung, with the above location of W20-401.
SysName: Ua
IP Adress: 18.187.1.193
Thanks,
--Lou
Entry: Assigned Case (cggriffi, 01/28/2002 14:23:17)
Case assigned to consultant cggriffi.
Entry: Comment (cggriffi, 01/28/2002 14:23:18)
3/12@rep-EG01
