nanog mailing list archives
Re: 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts
From: Matthew Petach <mpetach () netflight com>
Date: Wed, 7 Aug 2013 23:21:38 -0700
On Wed, Aug 7, 2013 at 2:31 PM, Phil Fagan <philfagan () gmail com> wrote:
BGP Noob question here; but wouldn't Time Warner not recieve a prefix if it wasn't reachable? Is this an artifact?
In a perfect world, people wouldn't advertise prefixes unless they knew they had reachability for those prefixes. Unfortunately, this a far, far from perfect world. Matt
On Mon, Aug 5, 2013 at 11:32 AM, Chad Reid <Chad.Reid () apollogrp edu> wrote:Thanks for the assistance everyone. This issue was resolved by shutting down a BGP peering session between Time Warner and Comcast. --Chad Chad M. Reid, Network Administrator II Work Hours: Sun. - Tue. 6AM-6PM and Wed. 6AM-3PM (MST -7) Apollo Group | IT Services │ IT Operations Center (ITOC) 4025 S. Riverpoint Parkway │ MS: AA-M002 │ Phoenix, AZ 85040 phone: 602.557.6746 │ fax: 602.557.6606 │ email: chad.reid () apollogrp edu -----Original Message----- From: Chad Reid Sent: Sunday, August 04, 2013 7:41 AM To: 'nanog () nanog org' Subject: 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts Hello NANOG, A few hundred of our users that use Comcast in the South East United States (other regions aren't affected) are unable to access our websitesinthe IP block 204.17.16.0/20. Based upon testing with the users, they're getting a destination unreachable from a Comcast backbone router in ASN 7922: be-16-pe03.56marietta.ga.ibone.comcast.net [68.86.83.134] reports: Destination net unreachable. We're not a customer of Comcast, nor are any of our ISPs. Because ofthis,we can't find anyone at Comcast to look at this issue nor do we have good contact info to even reach someone. Our users in the South East can open tickets with Comcast technical support, but you can imagine howsuccessfulthey are trying to explain this to frontline support and gettingfrontlinesupport to understand. Is anyone from Comcast on the list that can assist or know of a contact? Chad M. Reid, Network Administrator II Work Hours: Sun. - Tue. 6AM-6PM and Wed. 6AM-3PM (MST -7) Apollo Group | IT Services │ IT Operations Center (ITOC) 4025 S. Riverpoint Parkway │ MS: AA-M002 │ Phoenix, AZ 85040 phone: 602.557.6746 │ fax: 602.557.6606 │ email: chad.reid () apollogrp edu This message is private and confidential. If you have received it in error, please notify the sender and remove it from your system.-- Phil Fagan Denver, CO 970-480-7618
Current thread:
- 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts Chad Reid (Aug 05)
- Re: 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts Dave Sparro (Aug 05)
- <Possible follow-ups>
- RE: 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts Chad Reid (Aug 05)
- Re: 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts Phil Fagan (Aug 07)
- Re: 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts Matthew Petach (Aug 07)
- Re: 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts Tony Tauber (Aug 08)
- Re: 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts Phil Fagan (Aug 09)
- Re: 204.17.16.0/20 Unreachable via Comcast ASN 7992; Looking for Help or Contacts Phil Fagan (Aug 07)