[93330] in North American Network Operators' Group
Re: link between Sprint and Level3 Networks is down in Chicago
daemon@ATHENA.MIT.EDU (Steve Meuse)
Thu Nov 9 17:10:44 2006
Date: Thu, 9 Nov 2006 17:09:20 -0500
From: "Steve Meuse" <smeuse@gmail.com>
To: deepak@ai.net
Cc: nanog@merit.edu
In-Reply-To: <4553A4DA.4090402@ai.net>
Errors-To: owner-nanog@merit.edu
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It's not uncommon at all to have a single interconnect between providers in
a geographical area. Multiple interconnects within a region tended to be
more for load balancing, not redundancy.
There have been certain providers that, historically, could or would not
support anything larger than an OC48. In those cases you had multiple
circuits to maintain traffic balance. When they finally migrate to 10GE you
back off to a single circuit and use your backbone for city redundacy.
-Steve
On 11/9/06, Deepak Jain <deepak@ai.net> wrote:
>
>
> Does someone know if this is a *single* link down?? It seems bizarre to
> me that there would only be a single link (geographically) between those
> two.
>
> Whatever happened to redundancy?
>
> Deepak
>
>
> Dennis Dayman wrote:
> > We received confirmation from Time Warner. The link between Sprint and
> > Level3 Networks is down in Chicago. This has been an issue since 3:10 PM
> > EST. Time Warner has a ticket open to address the issue. Not sure what
> it
> > is yet.
> >
> > -Dennis
> >
> >
> >
>
--
-Steve
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<br>It's not uncommon at all to have a single interconnect between providers in a geographical area. Multiple interconnects within a region tended to be more for load balancing, not redundancy. <br><br>There have been certain providers that, historically, could or would not support anything larger than an OC48. In those cases you had multiple circuits to maintain traffic balance. When they finally migrate to 10GE you back off to a single circuit and use your backbone for city redundacy.
<br><br>-Steve<br><br><br><br><div><span class="gmail_quote">On 11/9/06, <b class="gmail_sendername">Deepak Jain</b> <<a href="mailto:deepak@ai.net">deepak@ai.net</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>Does someone know if this is a *single* link down?? It seems bizarre to<br>me that there would only be a single link (geographically) between those<br>two.<br><br>Whatever happened to redundancy?<br><br>Deepak<br><br>
<br>Dennis Dayman wrote:<br>> We received confirmation from Time Warner. The link between Sprint and<br>> Level3 Networks is down in Chicago. This has been an issue since 3:10 PM<br>> EST. Time Warner has a ticket open to address the issue. Not sure what it
<br>> is yet.<br>><br>> -Dennis<br>><br>><br>><br></blockquote></div><br><br clear="all"><br>-- <br><br>-Steve
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