Subject:
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Router failure; system downtime details
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Newsgroups:
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lugnet.admin.general
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Date:
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Mon, 26 Oct 1998 08:37:54 GMT
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Viewed:
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817 times
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This evening at approximately 10:30 p.m. EST (25 Oct 98), pair.com experienced
a failure in a Cisco 7508 Router, resulting in most of its network (including
lugnet.com) going offline. Details are available from Pair Networks at:
http://support.pair.com/notices/
Pair Networks (pair.com) is the ISP where the lugnet.com server is co-located.
FYI, here is how we were affected by this network outage:
1. Sometime between 10:30 and 10:35 p.m. all NNTP and HTTP connections were
dropped (NNTP connections shown below):
:
10/25 21:45 ''''''''''''''' | | | | | | | | | | | | | 9
10/25 21:50 '''''''''''' | | | | | | | | | | | | | 7
10/25 21:55 ''''''''''''''' | | | | | | | | | | | | | 9
10/25 22:00 '''''''''''' | | | | | | | | | | | | | 7
10/25 22:05 '''''''''''''' | | | | | | | | | | | | | 8
10/25 22:10 '''''''''''''' | | | | | | | | | | | | | 8
10/25 22:15 '''''''''''''' | | | | | | | | | | | | | 8
10/25 22:20 '''''''''''''' | | | | | | | | | | | | | 8
10/25 22:25 '''''''''''''' | | | | | | | | | | | | | 8
10/25 22:30 '''''''''''''' | | | | | | | | | | | | | 8
10/25 22:35 | | | | | | | | | | | | | 0
10/25 22:40 | | | | | | | | | | | | | 0
10/25 22:45 | | | | | | | | | | | | | 0
10/25 22:50 | | | | | | | | | | | | | 0
10/25 22:55 | | | | | | | | | | | | | 0
10/25 23:00 | | | | | | | | | | | | | 0
10/25 23:05 | | | | | | | | | | | | | 0
10/25 23:10 | | | | | | | | | | | | | 0
:
2. The server remained active doing miscellaneous chores during the network
outage:
:
10/25 22:27 ' | | | | | | | 0.03
10/25 22:28 ' | | | | | | | 0.01
10/25 22:29 | | | | | | | 0.00
10/25 22:30 | | | | | | | 0.00
10/25 22:31 '' | | | | | | | 0.06
10/25 22:32 '' | | | | | | | 0.08
10/25 22:33 ''' | | | | | | | 0.11
10/25 22:34 ' | | | | | | | 0.04
10/25 22:35 '''' | | | | | | | 0.15
10/25 22:36 '''' | | | | | | | 0.16
10/25 22:37 ''' | | | | | | | 0.12
10/25 22:38 ' | | | | | | | 0.04
10/25 22:39 ' | | | | | | | 0.01
10/25 22:40 | | | | | | | 0.00
10/25 22:41 '''''' | | | | | | | 0.22
10/25 22:42 '' | | | | | | | 0.08
:
10/26 01:39 ' | | | | | | | 0.01
10/26 01:40 | | | | | | | 0.00
10/26 01:41 '' | | | | | | | 0.06
10/26 01:42 ' | | | | | | | 0.02
10/26 01:43 ' | | | | | | | 0.01
10/26 01:44 ' | | | | | | | 0.04
reboot
10/26 01:47 '' | | | | | | | 0.08
10/26 01:48 '' | | | | | | | 0.06
10/26 01:49 ' | | | | | | | 0.05
10/26 01:50 ' | | | | | | | 0.04
:
3. The lugnet.com server was rebooted at approximately 1:45 a.m. I haven't
yet heard from Pair Support as to why the reboot was necessary (I'm sure
they're quite busy tonight) but it's likely that it had something to do
with reloading router tables, and also likely that they were able to
perform an orderly system shutdown by hand, since the reboot occurred
at the end of the outage rather than the beginning.
4. NNTP connections resumed approximately shortly after the routing problem at
Pair was fixed:
:
10/26 01:25 | | | | | | | | | | | | | 0
10/26 01:30 | | | | | | | | | | | | | 0
10/26 01:35 | | | | | | | | | | | | | 0
10/26 01:40 | | | | | | | | | | | | | 0
10/26 01:50 | | | | | | | | | | | | | 0
10/26 01:55 '' | | | | | | | | | | | | | 1
10/26 02:00 '''' | | | | | | | | | | | | | 2
10/26 02:05 ''''''''''' | | | | | | | | | | | | | 6
10/26 02:10 ''''''''''' | | | | | | | | | | | | | 6
10/26 02:15 '''''''' | | | | | | | | | | | | | 4
10/26 02:20 '''''''' | | | | | | | | | | | | | 4
:
5. HTTP file transfers resumed at exactly 1:46:19.
6. No data was lost.
--Todd Lehman
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