MPLS acceptable latency?

Thu Nov 15 22:06:03 UTC 2012

--- On Thu, 11/15/12, William Herrin <bill at herrin.us> wrote:

> From: William Herrin <bill at herrin.us>
> Subject: Re: MPLS acceptable latency?
> To: "Mikeal Clark" <mikeal.clark at gmail.com>
> Cc: "NANOG [nanog at nanog.org]" <nanog at nanog.org>
> Date: Thursday, November 15, 2012, 1:23 PM
> On Thu, Nov 15, 2012 at 1:54 PM,
> Mikeal Clark <mikeal.clark at gmail.com>
> wrote:
> > I have some AT&T MPLS sites under a managed
> contract with latency
> > averaging 75-85 ms without any load.  These sites
> are only 45 minutes
> > away.
> 
> I've noticed this with AT&T's MPLS product when dealing
> with the
> internal corporate network here. I don't know what they're
> doing wrong
> but it is so very wrong.

circa 2007, noticed same thing: never below 90ms coast-to-coast across as13979. atm ds3 handoffs on both ends.

> 
> >  What is considered normal/acceptable?
> 
> Less than 10ms unless you're using a sub-T1 interface or
> going a very
> long distance.
> 
> 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
> 
> 