nanog mailing list archives

RE: More on Vonage service disruptions...


From: Greg Boehnlein <damin () nacs net>
Date: Wed, 2 Mar 2005 22:15:48 -0500 (EST)


On Wed, 2 Mar 2005, Fergie (Paul Ferguson) wrote:

Ah, and therein lies the rub.

Any sort of QoS frob that is implemented for VoIP
(or any other traffic for that matter) _must_ be
truly honored end-to-end, and at every intermediate
hop in between, for it to be "guaranteed"  -- otherwise
when traffic that you may designate as "higher quality"
is handed off to another administrative domain that
does not honor your traffic classifications, all bets
are off.

If you do not "own" the end-to-end network
infrastructure, there is no way to guarantee any
preferential handling of any particular subset of
traffic.

So, set your Rate-Limiting of SIP traffic to 1 packet per second for the 
network that YOU control and then offer your VoIP subscribers a different 
QOS profile at a higher cost.

Bingo, problem solved. The economy will work itself out.

-- 
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         http://www.n2net.net Where everything clicks into place!
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