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Re: Proper authentication model
- From: John Bittenbender
- Date: Sun Jan 16 14:24:55 2005
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On Wed, 12 Jan 2005 12:58:43 -0500, Hannigan, Martin
> > -----Original Message-----
> > From: Joe Abley [mailto:firstname.lastname@example.org]
> > Sent: Wednesday, January 12, 2005 12:05 PM
> > To: Hannigan, Martin
> > Cc: NANOG list
> > Subject: Re: Proper authentication model
> > On 12 Jan 2005, at 11:53, Hannigan, Martin wrote:
> > >> You mean you'd *request* a different path from different providers.
> > >
> > > Provisioning a circuit from two different ^providers^, other than
> > > your OC3 provider.
> > I realise that's what you meant.
> > My point was that competing, differently-named and
> > organisationally-separate suppliers of network services
> > frequently use
> > common suppliers for metro fibre, long-haul transport,
> > building access,
> > etc. Just because you buy different services from different providers
> > doesn't mean there will be no common points of failure.
> There may be common points of failure like a carrier hotel, but I
> haven't been told I couldn't see loop or longhaul maps when planning
> a circuit, except when buying from other than a carrier or tier2.
> Primary and protect should be geographically seperated and if
> your carrier isn't buying access to BOTH conduits in your entrance
> facility, you should ask why. I just don't usually see this problem
> and I've *never* not been able to get into a facility remotely by
> the diversified frame M/S method.
I've seen two diverse sides of a SONET ring die due to fiber cuts
within minutes of each other on different sides of a city. A local
tech (from our company) drove to each and actually snapped a photo of
And our facilities and the ring were truly physically diverse, which
was the kicker. And yes it took down our LEC and IXC access to the