[23526] in North American Network Operators' Group
Re: Network Topology
daemon@ATHENA.MIT.EDU (Jody Craft)
Wed Mar 24 13:43:50 1999
Date: Wed, 24 Mar 1999 13:57:39 -0500
To: ravi@cow.org, Victor Alba <valba@gomez.com>, nanog@merit.edu
From: Jody Craft <jcraft@agis.net>
In-Reply-To: <19990324123151.F4755@happy.cow.org>
Errors-To: owner-nanog-outgoing@merit.edu
I think you have the wrong idea on this T-1 thing. If a fiber cut is
taking out your T-1's, as Mr. Mauch was saying. Then you would have a SONET
entrance facility from the LEC into your building. Having the LEC build
the entrance as a bidirectional ring with diverse physical entry points
into the building is the way to go. The only way a T-1 can be dropped due
to a fiber cut is if the build is Linear or the transport provider built a
single physical entry point (which is shady to say the least!).
Jody Craft
At 12:31 PM 3/24/99 -0500, Ravi Pina wrote:
>
>On Wed, Mar 24, 1999 at 11:08:39AM -0500, Jared Mauch babbled:
>>
>> my biggest concerns would be the following:
>>
>> 1) Fiber Cuts that take out your t1's
>> 2) Power Outages
>> 3) Router Failures
>
>even simpler than that. you need to make sure your ds1 is coming from
>differnt physical entry points of the facility from different CO's.
>one drunk running into the telephone pole outside your place, or a
>flood in the utilities under the streets can wipe you out if there
>aren't multiple paths.
>
>an absolute fallback would then be a uhf/microwave link to another
>facility which now a days can do 10Mb/s for not too much $$.
>
>-r
>
>--
>finger ravi@happy.cow.org for pgp key
>"Sometimes I think the surest way to know that there's intellegent
> life out there is the fact they haven't contacted us." -- Unknown
>
