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Re: [NANOG] Comcast (AS 7922 -> 33491) issues?

  • From: Ren Provo
  • Date: Thu Apr 24 12:44:03 2008

Hi Darrell,

This should be resolved shortly. -ren

On Thu, Apr 24, 2008 at 12:24 PM, Darrell Hyde <dhyde@xxxxxxxxxxxxxx> wrote:

> I'm seeing tons of availability issues to networks with AS paths ending
> in "7922 33491". A couple of the prefixes in question are 98.214.0.0/15,
> 69.137.240.0/20, 73.117.0.0/16, and 67.175.0.0/16.
>
> I spoke with Abovenet earlier this morning - they say its due to L3
> suppressing those announcements to some of their peers. Initially I
> thought they were just making things up, until I started seeing "%
> Network not in table" responses to BGP lookups on the router where I
> peer with Sprint:
>
> #show ip bgp 98.214.184.18
> % Network not in table
>
> #show ip bgp 69.137.251.134
> % Network not in table
>
> And yet...
>
> #show ip bgp 98.214.184.18
> BGP routing table entry for 98.214.0.0/15, version 26493985
> Paths: (2 available, best #1, table Default-IP-Routing-Table)
>  Advertised to update-groups:
>     3          4
>  3491 7922 33491
>    63.218.31.1 from 63.218.31.1 (63.218.30.9)
>      Origin IGP, localpref 100, valid, external, best
>      Community: 228787176 228787177 228794098
>  6395 3356 7922 33491
>    216.140.65.73 from 216.140.65.73 (216.140.9.56)
>      Origin IGP, metric 160, localpref 100, valid, external
>
> #show ip bgp 69.137.251.134
> BGP routing table entry for 69.137.240.0/20, version 26493909
> Paths: (2 available, best #1, table Default-IP-Routing-Table)
>  Advertised to update-groups:
>     3          4
>  3491 7922 33491
>    63.218.31.1 from 63.218.31.1 (63.218.30.9)
>      Origin IGP, localpref 100, valid, external, best
>      Community: 228787176 228787177 228794098
>  6395 3356 7922 33491
>    216.140.65.73 from 216.140.65.73 (216.140.9.56)
>      Origin IGP, metric 160, localpref 100, valid, external
>
> Based on what I'm seeing, someone out there has to be seeing similar
> behavior. Anybody? Bueller?
>
> D.
>
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>
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