nanog mailing list archives

Re: Last Week's Canadian Fiber Cut


From: Christopher Morrell <christopher.morrell.nanog () gmail com>
Date: Wed, 16 Aug 2017 22:29:34 +0000

Let’s not forget that all POTS and cell service was offline during the
outage - even for local and 911 service.

There is some high level of dependence on some equipment in Quebec and/or
westward which should not be there.

A double fault like that should not knock out all local service for 4 out
of 10 provinces. I would expect that an architectural review is under way.


On Wed, Aug 16, 2017 at 16:14 Paul Stewart <paul () paulstewart org> wrote:

It wasn’t an issue getting transatlantic - it was an issue within a
relatively small region in Eastern Canada talking to the rest of the world
for certain carriers.  There were several smaller carriers/providers not
affected - just happens the local incumbent telco and one of their larger
competitors got knocked out …


On Aug 15, 2017, at 3:52 PM, Jared Mauch <jared () puck nether net> wrote:


On Aug 15, 2017, at 1:22 PM, Rod Beck <rod.beck () unitedcablecompany com>
wrote:

Did we ever get any resolution on why this was such a big outage?
Appears there were two fiber cuts. Were the fibers damaged in the same
conduit? Is this a collapsed ring scenario?



http://www.cbc.ca/news/canada/newfoundland-labrador/concerns-about-backup-bell-outage-1.4239064

Perhaps some transatlantic fallback?  It looks like the only cable out
there is the Greenland one.. guessing that’s not very competitive?  It only
gets you to Iceland it seems.

- Jared




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