Time Warner Telecom problems

Mon Nov 7 15:12:30 UTC 2011

On Mon, 7 Nov 2011, Peter Pauly wrote:

> Gizmodo is reporting problems at Time Warner Telecom .... we're suffering
> from it too and calls to the NOC have not been answered so far...  does
> anyone have any further information?
>
> http://gizmodo.com/5857010/massive-time-warner-outage-hits-the-us

I noticed just a little while ago that we're having a lot of DNS fail. 
Initial findings were that several of the root-servers we were trying to 
reach via our TWTelecom link were unreachable after 2 hops into TWT.

  4  64-128-130-233.static.twtelecom.NET (64.128.130.233)  2.399 ms  2.298 ms  2.338 ms
  5  mia2-pr1-xe-1-3-0-0.us.twtelecom.net (66.192.253.18)  11.571 ms  11.552 ms  9.467 ms
  6  * * *
  7  * * *
  8  * * *

For instance, a.root-servers.net is pingable from a rackspace server, but 
not from our network (unless I shut off TWT, at which point it is, but 
it's apparently not the same a.root-servers.net instance rackspace sees). 
I assume this is one of the root-servers being anycast.

Shutting off our BGP with TWT didn't appear to help (though the 
root-servers became reachable)...so I assume there's more going on than 
just TWT routing fail.

----------------------------------------------------------------------
  Jon Lewis, MCP :)           |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
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