[86358] in North American Network Operators' Group

home help back first fref pref prev next nref lref last post

Re: cymru down?

daemon@ATHENA.MIT.EDU (Rob Thomas)
Wed Nov 2 13:21:21 2005

Date: Wed, 2 Nov 2005 12:20:54 -0600 (CST)
From: Rob Thomas <robt@cymru.com>
To: NANOG <nanog@merit.edu>
In-Reply-To: <Pine.GSO.4.58.0510312015530.22139@parapet.argfrp.us.uu.net>
Errors-To: owner-nanog@merit.edu


Hi, NANOGers.

Just a quick interruption in your day to update you on the routing
fun we had.  :)  The problem was two-fold:

   1. An errant provider router that randomly selected which
      prefixes to propagate.  Mix that with uRPF, and you
      have FUN FUN FUN!  :)

   2. An interesting use of LOCAL_PREF by the provider, now
      mitigated.

Our tests from multiple external pods and route servers show that
we're globally visible again.  If you're having any difficulty
reaching us, please let us know at <team-cymru@cymru.com>.

Again we apologize for the inconvenience!

Thanks,
Rob, for Team Cymru.
-- 
Rob Thomas
Team Cymru
http://www.cymru.com/
ASSERT(coffee != empty);


home help back first fref pref prev next nref lref last post