nanog mailing list archives
Re: MPLS acceptable latency?
From: Alex <dreamwaverfx () yahoo com>
Date: Fri, 16 Nov 2012 00:33:25 +0200
Perhaps the network is "oldish" and there are BW bottlenecks that lead to queues on the switches/routers that results in higher latency. This would depend alot on the internal QoS strategy used by AT&T, the type of equipment used and the load in different parts of the network.
The only way to know what happens inside their MPLS cloud is to get past support and ask someone from the technical staff.
On 11/16/2012 12:06 AM, Randy wrote:
--- On Thu, 11/15/12, William Herrin <bill () herrin us> wrote:From: William Herrin <bill () herrin us> Subject: Re: MPLS acceptable latency? To: "Mikeal Clark" <mikeal.clark () gmail com> Cc: "NANOG [nanog () nanog org]" <nanog () nanog org> Date: Thursday, November 15, 2012, 1:23 PM On Thu, Nov 15, 2012 at 1:54 PM, Mikeal Clark <mikeal.clark () gmail com> wrote:I have some AT&T MPLS sites under a managedcontract with latencyaveraging 75-85 ms without any load. These sitesare only 45 minutesaway.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 () dirtside com bill () herrin us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
Current thread:
- MPLS acceptable latency? Mikeal Clark (Nov 15)
- Re: MPLS acceptable latency? Dan White (Nov 15)
- Re: MPLS acceptable latency? Mike Hale (Nov 15)
- Re: MPLS acceptable latency? Jared Mauch (Nov 15)
- Message not available
- Fwd: MPLS acceptable latency? david peahi (Nov 15)
- Re: MPLS acceptable latency? William Herrin (Nov 15)
- Re: MPLS acceptable latency? Randy (Nov 15)
- Re: MPLS acceptable latency? Alex (Nov 15)
- Re: MPLS acceptable latency? Randy (Nov 15)
- <Possible follow-ups>
- Re: MPLS acceptable latency? Scott Weeks (Nov 15)
- Re: MPLS acceptable latency? Jared Mauch (Nov 15)
- Re: MPLS acceptable latency? Mikeal Clark (Nov 15)
- RE: MPLS acceptable latency? Adam Vitkovsky (Nov 16)
- Re: MPLS acceptable latency? PC (Nov 15)
- Re: MPLS acceptable latency? Jared Mauch (Nov 15)