nanog mailing list archives
Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover
From: Mike Hammett <nanog () ics-il net>
Date: Thu, 2 Nov 2017 16:21:54 -0500 (CDT)
I believe when I've looked into it before, UP required your utility to be at the far outside edge of their ROW, so not really close to the track. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com ----- Original Message ----- From: "Joe Abley" <jabley () hopcount ca> To: "Steve Naslund" <SNaslund () medline com> Cc: nanog () nanog org Sent: Thursday, November 2, 2017 1:40:59 PM Subject: Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover On 2 Nov 2017, at 09:25, Naslund, Steve <SNaslund () medline com> wrote:
There are four facts to be aware of here. 1. Locators are not 100% especially when it comes to fiber.
I remember years ago in New Zealand there was buried fibre along the railway running north-south in the North Island that was not generally anybody's first choice of glass when trying to connect sites in Auckland and Wellington. The problem I heard described (from memory, long time ago, I am old) was that the natural vibration of the ground due to trains on rails had the effect over time of pushing conduit down the embankment away from the track, leading to fibre breaks with no corresponding obvious cause (no digging). You could bounce signals down the copper in the conduit from either side to try and figure out where the break was, but once on site you still had to find the fibre which was usually not anywhere close to where the map said it was buried. Joe
Current thread:
- Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Jacques Latour (Nov 01)
- Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Jean-Francois Mezei (Nov 01)
- Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Clayton Zekelman (Nov 01)
- Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Mike Hammett (Nov 01)
- RE: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Naslund, Steve (Nov 02)
- Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Joe Abley (Nov 02)
- Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Mike Hammett (Nov 02)
- Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Clayton Zekelman (Nov 01)
- Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Jean-Francois Mezei (Nov 01)
- <Possible follow-ups>
- Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover Scott Weeks (Nov 01)