[50223] in North American Network Operators' Group
RE: PSINet/Cogent Latency
daemon@ATHENA.MIT.EDU (Alex Rubenstein)
Tue Jul 23 00:04:11 2002
Date: Mon, 22 Jul 2002 23:59:25 -0400 (Eastern Daylight Time)
From: Alex Rubenstein <alex@nac.net>
To: Randy Bush <randy@psg.com>
Cc: Phil Rosenthal <pr@isprime.com>,
"nanog@merit.edu" <nanog@merit.edu>
In-Reply-To: <E17WqO7-0006hC-00@rip.psg.com>
Errors-To: owner-nanog-outgoing@merit.edu
Packet loss is not guaranteed, especially considering the queuing
mechanism used is not disclosed.
IE, a simply hold queue north of 2048 will cause no loss, but the
occasional jitter/latency, most likely not even measureable by common
endpoints on the net.
I'm not endorsing, just correcting.
On Mon, 22 Jul 2002, Randy Bush wrote:
>
> > 40mb/s isn't "loaded" for a DS3?
>
> if you are measuring 40mb at five min intervals, micro peaks are pegged out
> causing serious packet loss.
>
> randy
>
-- Alex Rubenstein, AR97, K2AHR, alex@nac.net, latency, Al Reuben --
-- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
