question regarding multi-homing

William Herrin herrin-nanog at dirtside.com
Wed Dec 30 12:25:00 CST 2009


On Wed, Dec 30, 2009 at 12:02 PM, Simon Chen <simonchennj at gmail.com> wrote:
> I have a question regarding multi-homing, mostly from stub network's
> operational point of view. My big question is: what kind of failures
> do you usually see from your providers? Link down? Link up, but
> withdraw some routes? Link up, no route change, but blackholing
> partial or all traffic? Anything else?

Two more failure modes:

Link up, receiving all routes but provider stops propagating your
announcement outward.

Link up but unusably high packet loss to some or all destinations.

Regards,
Bill Herrin


-- 
William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004




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