MSU Listserv


MSUNAG Archives

MSUNAG Archives


MSUNAG@LIST.MSU.EDU


View:

Message:

[

First

|

Previous

|

Next

|

Last

]

By Topic:

[

First

|

Previous

|

Next

|

Last

]

By Author:

[

First

|

Previous

|

Next

|

Last

]

Font:

Monospaced Font

LISTSERV at MSU

LISTSERV at MSU

MSUNAG Home

MSUNAG Home

MSUNAG  August 2007

MSUNAG August 2007

Subject:

Re: Merit about yesterday's trouble

From:

Matt Holtz <[log in to unmask]>

Reply-To:

Matt Holtz <[log in to unmask]>

Date:

Tue, 21 Aug 2007 15:41:43 -0400

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (55 lines)

Typically, don't remote power strips require the network to be operating?

Maybe I'm too removed from the routing world to know about all the cool
new toys.



John Valenti wrote:
> A few other tidbits I picked up at the meeting:
>
> 1. MSU's long distance phone calls are routed over the Internet. The
> default path uses Merit, but it can be manually re-routed over an AT&T
> connection. (someone at Telecomm re-routed things after an hour of
> downtime this morning).
>
> 2. MSU is developing a remote hot site at Penn State. Currently in an
> early stage of development, so there isn't a redundant network path to
> it. Potentially the MSU web home page will be duplicated there
> (eventually),
>
> 3. Merit had to send techs from Ann Arbor to Grand Rapids and Kalamazoo
> to reboot hardware this morning (they had a good reason for this). They
> will be installing remote power management hardware; also trying to get
> some local people signed up for access to those fiber rooms.
>
> -John
>
>
> On August 21, at 12:52 PM August 21, Doug Nelson wrote:
>
>> For those of you who didn't attend Merit's web conference, here's a
>> short update. Merit engineers traced the source of the Merit Network
>> problems to the failure of an optical amplifier within the MiLR network,
>> following scheduled maintenance by the fiber carrier. This failure
>> created a marginal optical fiber path, and accounted for the network
>> difficulties seen in the original outages between Thursday and Sunday,
>> and again this morning, after a second scheduled fiber maintenance
>> window. The fiber path failure was compounded by a software failure
>> which repeatedly attempted to bypass the marginal link, and then rapidly
>> restore the link to service. This process also caused the errant
>> switches to exhaust their memory due to a second software failure,
>> leading to additional packet switching and routing failures, cascading
>> throughout the Merit Network.
>>
>> Once the problematic link was disabled, service returned to a somewhat
>> stable state, but on limited bandwidth.
>>
>> As of 12:00 noon today, the Merit network appears to be operating
>> normally and at full capacity, but we are awaiting final word from
>> the Merit field and operations engineers on what was done and whether
>> service is fully restored.
>>
>> I will pass on additional details once Merit releases them.
>>
>> Doug

Top of Message | Previous Page | Permalink

Advanced Options


Options

Log In

Log In

Get Password

Get Password


Search Archives

Search Archives


Subscribe or Unsubscribe

Subscribe or Unsubscribe


Archives

December 2023
June 2023
May 2022
April 2022
March 2022
February 2022
December 2021
January 2019
August 2018
June 2018
May 2018
March 2018
February 2018
January 2018
December 2017
November 2017
October 2017
September 2017
August 2017
July 2017
June 2017
May 2017
April 2017
March 2017
February 2017
January 2017
December 2016
November 2016
October 2016
September 2016
August 2016
July 2016
June 2016
May 2016
April 2016
March 2016
February 2016
January 2016
December 2015
November 2015
October 2015
September 2015
August 2015
July 2015
June 2015
May 2015
April 2015
March 2015
February 2015
January 2015
December 2014
November 2014
October 2014
September 2014
August 2014
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007
July 2007
June 2007
May 2007
April 2007
March 2007
February 2007
January 2007
December 2006
November 2006
October 2006
September 2006
August 2006
July 2006
June 2006
May 2006
April 2006
March 2006
February 2006
January 2006
December 2005
November 2005
October 2005
September 2005
August 2005
July 2005
June 2005
May 2005
April 2005
March 2005
February 2005
January 2005
December 2004
November 2004
October 2004
September 2004
August 2004
July 2004
June 2004
May 2004
April 2004
March 2004
February 2004
January 2004
December 2003
November 2003
October 2003
September 2003
August 2003
July 2003
June 2003
May 2003
April 2003
March 2003
February 2003
January 2003
December 2002
November 2002
September 2002
August 2002
July 2002
June 2002
May 2002
April 2002
March 2002
February 2002
January 2002
December 2001
November 2001
October 2001

ATOM RSS1 RSS2



LIST.MSU.EDU

CataList Email List Search Powered by the LISTSERV Email List Manager