Problems for route to 92.43.96.0/21 for Comcast?

Mon Feb 11 22:30:02 UTC 2013

On Feb 11, 2013, at 4:52 PM, nanog-request at nanog.org wrote:

> ------------------------------
> 
> Message: 4
> Date: Mon, 11 Feb 2013 13:24:21 -0800
> From: Jim Burwell <jimb at jsbc.cc>
> To: nanog at nanog.org
> Subject: Problems for route to 92.43.96.0/21 for Comcast?
> Message-ID: <51196185.3050109 at jsbc.cc>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> Can't seem to get to 92.43.96.0/21 (specifically 92.43.96.130 ... in
> Salzburg Austria) from Comcast Business in the Bay Area (traceroute
> stops close to provider edge).
> 
> Works from Verizon FiOS down in LA, and a HE.net host in Fremont.
> 
> Comcast folks may want to look at this.  :-)
> 
> - Jim
> 
> 
> 

Comcast has a route server at route-server.newyork.ny.ibone.comcast.net.  From the view there, it appears 92.43.96.130 has been black holed.  The IP holder and/or folks at AS49322 may want to contact Comcast Security folks.  http://xfinity.comcast.net/constantguard/Support/Contacts

route-server.newyork.ny.ibone>show ip bgp 92.43.96.130
BGP routing table entry for 92.43.96.130/32, version 1613615116
Paths: (8 available, best #7, table Default-IP-Routing-Table, not advertised to EBGP peer)
  Advertised to update-groups:
     2         
  64650, (received & used)
    68.86.80.11 (metric 80255) from 68.86.80.11 (68.86.1.11)
      Origin incomplete, metric 0, localpref 100, valid, internal
      Community: 64650:50001 no-export
  64650, (received & used)
    68.86.80.13 (metric 73765) from 68.86.80.13 (68.86.1.13)
      Origin incomplete, metric 0, localpref 100, valid, internal
      Community: 64650:50001 no-export
  64650, (received & used)
    68.86.80.10 (metric 79700) from 68.86.80.10 (68.86.1.10)
      Origin incomplete, metric 0, localpref 100, valid, internal
      Community: 64650:50001 no-export
  64650, (received & used)
    68.86.80.7 (metric 74330) from 68.86.80.7 (68.86.1.7)
      Origin incomplete, metric 0, localpref 100, valid, internal
      Community: 64650:50001 no-export
  64650, (received & used)
    68.86.80.12 (metric 69700) from 68.86.80.12 (68.86.1.12)
      Origin incomplete, metric 0, localpref 100, valid, internal
      Community: 64650:50001 no-export
  64650, (received & used)
    68.86.1.5 (metric 69635) from 68.86.80.6 (68.86.1.6)
      Origin incomplete, metric 0, localpref 100, valid, internal
      Community: 64650:50001 no-export
      Originator: 68.86.1.5, Cluster list: 68.86.1.6
  64650, (received & used)
    68.86.80.2 (metric 65535) from 68.86.80.2 (68.86.1.2)
      Origin incomplete, metric 0, localpref 100, valid, internal, best
      Community: 64650:50001 no-export
  64650, (received & used)
    68.86.80.0 (metric 66795) from 68.86.80.0 (68.86.1.0)
      Origin incomplete, metric 0, localpref 100, valid, internal
      Community: 64650:50001 no-export
route-server.newyork.ny.ibone> 
route-server.newyork.ny.ibone>show ip bgp 92.43.96.131
BGP routing table entry for 92.43.96.0/21, version 1594928908
Paths: (8 available, best #2, table Default-IP-Routing-Table)
  Advertised to update-groups:
     2         
  1257 8437 3248 49322, (received & used)
    68.86.1.42 (metric 66845) from 68.86.80.12 (68.86.1.12)
      Origin IGP, metric 0, localpref 250, valid, internal
      Community: 7922:42 7922:3000
      Originator: 68.86.1.42, Cluster list: 68.86.1.12, 68.86.1.0
  1257 8437 3248 49322, (received & used)
    68.86.1.46 (metric 65585) from 68.86.80.2 (68.86.1.2)
      Origin IGP, metric 0, localpref 250, valid, internal, best
      Community: 7922:46 7922:3000
      Originator: 68.86.1.46, Cluster list: 68.86.1.2
  1257 8437 3248 49322, (received & used)
    68.86.1.42 (metric 66845) from 68.86.80.11 (68.86.1.11)
      Origin IGP, metric 0, localpref 250, valid, internal
      Community: 7922:42 7922:3000
      Originator: 68.86.1.42, Cluster list: 68.86.1.11, 68.86.1.0
  1257 8437 3248 49322, (received & used)
    68.86.1.42 (metric 66845) from 68.86.80.13 (68.86.1.13)
      Origin IGP, metric 0, localpref 250, valid, internal
      Community: 7922:42 7922:3000
      Originator: 68.86.1.42, Cluster list: 68.86.1.13, 68.86.1.0
  1257 8437 3248 49322, (received & used)
    68.86.1.46 (metric 65585) from 68.86.80.6 (68.86.1.6)
      Origin IGP, metric 0, localpref 250, valid, internal
      Community: 7922:46 7922:3000
      Originator: 68.86.1.46, Cluster list: 68.86.1.6, 68.86.1.2
  1257 8437 3248 49322, (received & used)
    68.86.1.46 (metric 65585) from 68.86.80.10 (68.86.1.10)
      Origin IGP, metric 0, localpref 250, valid, internal
      Community: 7922:46 7922:3000
      Originator: 68.86.1.46, Cluster list: 68.86.1.10, 68.86.1.2
  1257 8437 3248 49322, (received & used)
    68.86.1.42 (metric 66845) from 68.86.80.0 (68.86.1.0)
      Origin IGP, metric 0, localpref 250, valid, internal
      Community: 7922:42 7922:3000
      Originator: 68.86.1.42, Cluster list: 68.86.1.0
  1257 8437 3248 49322, (received & used)
    68.86.1.46 (metric 65585) from 68.86.80.7 (68.86.1.7)
      Origin IGP, metric 0, localpref 250, valid, internal
      Community: 7922:46 7922:3000
      Originator: 68.86.1.46, Cluster list: 68.86.1.7, 68.86.1.2
route-server.newyork.ny.ibone>

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