Re: Ubiquity<->Mzima routing loop

["Sena, Rich" <rsena () mitre org>]

Man it's been awhile...

"Godwin..." errr maybe it's "Nazi" - or perhaps "Boursey" damn how do
we stop this again?!?!

Please only reply if you remember the magic word to make this thread
stop!

-- 
via the Blackberry Xpress!

----- Original Message -----
From: Guy_Shields () Stream Com <Guy_Shields () Stream Com>
To: Paul Wall <pauldotwall () gmail com>
Cc: nanog <nanog () merit edu>
Sent: Fri Jul 18 22:33:12 2008
Subject: Re: Ubiquity<->Mzima routing loop

No, a true routing loop will transit several hops and end back up at
the same routers. A bouncing route between 2 routers is usually a
directly connected route on an interface that goes down thereby
"pulling" the route with out a nail down route it will send unkown
route back out its default gateway. 


----- Original Message -----
From: "Paul Wall" [pauldotwall () gmail com]
Sent: 07/18/2008 10:25 PM AST
To: Guy Shields
Cc: nanog <nanog () merit edu>
Subject: Re: Ubiquity<->Mzima routing loop



Isn't that what a routing loop is, when it loops back out to the
transit/interface from which it entered?

Paul

On Fri, Jul 18, 2008 at 7:07 PM,  <Guy_Shields () stream com> wrote:
> This is not a routing loop. It is simply a route that was not tied
down via a static route to NULL with a weight of 254.
> ----- Original Message -----
> From: "Paul Wall" [pauldotwall () gmail com]
> Sent: 07/18/2008 06:57 PM AST
> To: "William Pitcock" <nenolod () systeminplace net>
> Cc: nanog () merit edu
> Subject: Re: Ubiquity<->Mzima routing loop
>
>
>
> I'd like to rip on Mzima as much as the next guy, but I'm not sure
how
> they could "fix" this routing loop, shy of some creative ACLs.
>
> You should try contacting Ubiquity, as this traceroute looks like an
> issue on their (Mzima's customer's) side.
>
> Paul Wall
>
> On Fri, Jul 18, 2008 at 3:27 PM, William Pitcock
> <nenolod () systeminplace net> wrote:
> > Hi,
> >
> > Can someone at Ubiquity or Mzima fix this routing loop:
> >
> > traceroute to hg.atheme.org (72.37.225.164), 30 hops max, 40 byte
> > packets
> >  1  64.62.134.193  12.402 ms  12.370 ms  12.363 ms
> >  2  ge5-0.cr01.ord01.mzima.net (206.223.119.62)  16.003 ms  15.985
ms
> > 15.964 ms
> >  3  ge0-ubiquity.cust.ord01.mzima.net (72.37.148.158)  14.139 ms
14.858
> > ms  14.838 ms
> >  4  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  15.875 ms  15.854
ms
> > 16.497 ms
> >  5  ge0-ubiquity.cust.ord01.mzima.net (72.37.148.158)  14.747 ms
14.763
> > ms  14.745 ms
> >  6  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  16.405 ms  8.773 ms
> > 8.758 ms
> >  7  ge0-ubiquity.cust.ord01.mzima.net (72.37.148.158)  9.831 ms * *
> >  8  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  4.417 ms  4.403 ms
> > 4.381 ms
> >  9  * * *
> > 10  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  4.293 ms  4.933 ms
> > 4.914 ms
> > 11  * * *
> > 12  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  14.527 ms  14.526
ms
> > 14.438 ms
> > 13  * * *
> > 14  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  14.352 ms  14.335
ms
> > 3.770 ms
> > 15  * * *
> > 16  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  3.684 ms  13.897 ms
> > 13.897 ms
> > 17  * * *
> > 18  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  8.599 ms  8.581 ms
> > 8.668 ms
> > 19  * * ge0-ubiquity.cust.ord01.mzima.net (72.37.148.158)  8.246 ms
> > 20  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  8.584 ms  8.565 ms
> > 8.545 ms
> > 21  * * ge0-ubiquity.cust.ord01.mzima.net (72.37.148.158)  8.119 ms
> > 22  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  8.456 ms  8.931 ms
> > 8.913 ms
> > 23  * ge0-ubiquity.cust.ord01.mzima.net (72.37.148.158)  6.049 ms *
> > 24  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  15.862 ms  15.754
ms
> > 15.736 ms
> > 25  ge0-ubiquity.cust.ord01.mzima.net (72.37.148.158)  7.132 ms *
7.092
> > ms
> > 26  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  15.293 ms  15.998
ms
> > 10.752 ms
> > 27  ge0-ubiquity.cust.ord01.mzima.net (72.37.148.158)  5.353 ms
5.336
> > ms *
> > 28  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  3.800 ms  3.854 ms
> > 3.823 ms
> > 29  * * *
> > 30  ge0-12.cr01.ord01.mzima.net (72.37.148.157)  3.228 ms  4.426 ms
> > 13.019 ms
> >
> > Thanks!
> >
> > William