[Faccus] NETWORK ALERT - 2013-04-1 - update March 27 issue

bruce at uwaterloo.ca bruce at uwaterloo.ca
Mon Apr 1 07:18:31 EDT 2013

Description:     update March 27 issue

Date: (YYYY-MM-DD)     2013-04-1

Start Time:              1:45pm

End Time:	3:15pm	



Submitted By: bruce at uwaterloo.ca

Update last weeks partial internet outage
March 27 1:45pm to 3:15pm.

Issue started at approximately 1:45pm March 27
same time as fibre cut on York<-->Guelph link.

UW experienced loss of connectivity to many
sites, including google.

UW disconnects ORION link at 3:15pm to restore
service.  Announcement from ORION of fibre
cut arrives shortly thereafter.

ORION fibre is repaired around 5:30pm.

UW reconnects ORION link at 7:00am March 28.

Investigation continues.  Observations:

 - ORION reports no other customers impacted
   (ORION's network is designed with redundancy)
 - UW was able to reach many, but not all,
   ORION sites during issue
 - UW experienced similar issue Nov 1 when
   ORION had failure York area.  Same symptoms.
 - Many sites, including CANARIE, google, and
   parts of ORION unable to reach UW during issue.

Of interest:

  - UW has 3 primary general 1gbps internet
    services with Cogent, Hydro One Telecom,
    and Allstream.
  - UW also has a 10gbps research service with
  - Many non research (e.g. google) sites 
    are connected to ORION.

Notice Submitted:    Mon Apr 1 7:18:31 EDT 2013

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Note:   If you have any questions or concerns please contact the IST Help Desk at ext: 84357 or helpdesk at uwaterloo.ca

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