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RE: Re: spare fibers

  • From: dies
  • Date: Sun Jun 16 21:27:26 2002


Hahaha...SBGP...Praise you my son.  You make very, very, VERY valid
points...

You made me smile.

=]

On Sun, 16 Jun 2002, Daniel Golding wrote:

>
> Hmm. How many points of disruption, backhoes, chainsaws, hooligans, etc,
> would be needed to do this in the US and Canada? 20? 30? Sean Donelan on
> a specially outfitted Segway? (just picture it...)
>
> I suspect that might be a better source of inquiry for our friends in
> the federal government, then, say, SBGP.
>
> Might be useful for the Powers That Be to actually do a simulation of
> this, and see how far they can get.
>
> - Daniel Golding
>
> > -----Original Message-----
> > From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On
> > Behalf Of Frank Coluccio
> > Sent: Sunday, June 16, 2002 6:43 PM
> > To: blitz@macronet.net
> > Cc: nanog@trapdoor.merit.edu
> > Subject: Re: Re: spare fibers
> >
> >
> >
> > Almost without exception, "ring topology" implies a
> > single-carrier doing physical
> > layer provisioning and support. In the case where multiple
> > points are under
> > attack in a concerted effort to knock out service (including
> > the failover
> > capabilities), it's either an "inside job" or, at the least,
> > one where
> > intelligence relating to individual SONET backbones and rings
> > has been obtained
> > from various sources for the purpose of thwarting such _self-healing_
> > capabilities that are usually afforded by SONET/SDH.
> >
> > In the not too distant past (during the pre-sonet and early
> > SONET days when N+1
> > automatic protection switching was used instead of
> > counter-rotating recovery
> > schemes) we saw this occur, albeit infrequently, during
> > periods of labor unrest
> > and other tense forms of situations relating to competition
> > (where folks feared
> > for their jobs) along the NY-NJ corridor and in certain parts
> > of California, to
> > name just two that I recall off the top of my head. Until
> > recently (post 9-11),
> > however, it was hardly a matter of overwhelming concern.
> > Today it is becoming
> > more so a matter of heightened concern. Meshing through the
> > use of diverse
> > providers' facilities may prove to be the ultimate means of
> > protection, with the
> > proviso being that those providers are not all sharing the
> > same physical routes.
> > fwiw.
> >
> > FAC
> >
> > >
> > >
> > > Hi Daniel and all,
> > > Yes, multiple fiber in multiple conduits, traveling
> > multiple paths is
> > > the
> > > best way to insure something's going to have connectivity.
> > > Ring topology is what I've seen mostly for best protection,
> > if something
> > > goes down, restoration takes milliseconds and is automatic.
> > Worst case, is
> > > some contractor digs up the place where your fiber enters
> > your building and
> > > severs everything....not much you can do about that kind of outage.
> > >
> > >
> > > At 20:41 6/16/02 +0200, you wrote:
> > >
> > >
> > > >Hi blitz,
> > > >
> > > >I think that you talk about multiple outage in the
> > Telefonica Network
> > > >in Spain cause by sabotage. (48 fibers in 4 points  at the same
> > > >time)
> > > >
> > > >I see ok the interest of the ministry, is necessary to assure that
> > > >outages don't affect to the national infraestruture.
> > > >
> > > >In our case we build our network over diverse companys
> > with diverse
> > > >path in their fiber network. I see ok, that all companys
> > that operate
> > > >basic services do it and they will have backup and emergency plans.
> > > >
> > > >Regards,
> > > >Daniel
> > > >Intelideas
> > > >
> > > >
> > > >On Sun, 16 Jun 2002, blitz wrote:
> > > >
> > > > >
> > > > > The Spanish ministry of science and technology has asked
> > > > >     telecommunications companies to activate a backup
> > plan in the
> > > > >     case of such emergencies in future.
> > > > >
> > > > > Spare fibers in the same duct ;-?
> > > > >
> > > > > Doesn't sound like it would be much protection from "backhoe
> > > > > fade"...heh
> > > > >
> > >
> > >
> >
> >
>
>





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