[NANOG] Comcast Routing Issues

Gary T. Giesen giesen at snickers.org
Fri Apr 25 15:14:24 CDT 2008


Note that these addresses are advertised aggregated as a /19 from us
to our peers.

GG

On Fri, Apr 25, 2008 at 4:10 PM, Gary T. Giesen <giesen at snickers.org> wrote:
> Anyone from Comcast (or anyone know anyone from Comcast) that can
>  contact me regarding a routing issue on their network? I'm seeing some
>  weird routing between a customer of mine and a /32 on our network.
>
>  Traceroutes from customer site to two adjacent /32's on our network
>
>
>  Working /32
>
>   1  *  *  *
>   2 68.85.179.153 8 msec 8 msec 12 msec
>   3 68.85.176.169 8 msec 8 msec 8 msec
>   4 68.87.231.113 12 msec 12 msec 12 msec
>   5 68.86.90.170 24 msec 24 msec 28 msec
>   6 68.86.90.169 32 msec 36 msec 32 msec
>   7 68.86.85.26 40 msec 48 msec 40 msec
>   8 68.86.85.70 56 msec 56 msec 56 msec
>   9 62.156.128.117 56 msec 64 msec 56 msec
>   10 62.154.5.214 124 msec 136 msec 76 msec
>  ...
>
>
>  Broken /32
>
>   1  *  *  *
>   2 68.85.179.153 12 msec 8 msec 12 msec
>   3 68.85.176.169 8 msec 8 msec 12 msec
>   4 68.87.230.234 16 msec 16 msec 24 msec
>   5 68.86.90.54 12 msec 16 msec 16 msec
>   6 68.86.90.53 40 msec 44 msec 36 msec
>   7 68.86.85.101 68 msec 68 msec 56 msec
>   8  *  *  *
>   9  *  *  *
>   10  *  *  *
>  ...
>
>  Regards,
>
>  GG
>




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