RE: MPLS acceptable latency?

[Adam Vitkovsky <adam.vitkovsky () swan sk>]

It might be some T1 muxing issue

adam
-----Original Message-----
From: Mikeal Clark [mailto:mikeal.clark () gmail com] 
Sent: Thursday, November 15, 2012 8:35 PM
To: Jared Mauch
Cc: nanog () nanog org
Subject: Re: MPLS acceptable latency?

The location in question is 7 T1s.  They were not willing to give us fiber.

On Thu, Nov 15, 2012 at 1:20 PM, Jared Mauch <jared () puck nether net> wrote:
> On Nov 15, 2012, at 2:15 PM, Scott Weeks wrote:
>
> > --- mikeal.clark () gmail com wrote:
> > From: Mikeal Clark <mikeal.clark () gmail com>
> >
> > 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.  What is considered normal/acceptable?
> > --------------------------------------------
> >
> >
> > Coast-to-coast latency is around 60-65msec, so that's high.
>
> What link speed?
>
> Perhaps he's using ISDN or a T1?
>
> Serialization delay is not to be ignored.
>
> - Jared