[2225] in North American Network Operators' Group
Re: MCI [ATM overhead]
daemon@ATHENA.MIT.EDU (Tim Salo)
Mon Mar 25 18:04:31 1996
From: salo@msc.edu (Tim Salo)
Date: Mon, 25 Mar 1996 16:42:34 -0600 (CST)
To: jon@branch.com
Cc: nanog@merit.edu
> From: jon@branch.com (Jon Zeeff)
> Subject: Re: MCI [ATM overhead]
> To: salo@msc.edu (Tim Salo)
> Date: Thu, 21 Mar 1996 09:04:44 -0500 (EST)
> Cc: wolfgang@whnet.com, nanog@merit.edu
>
> > Line Rate 155.520 Mbps
> > Available to ATM 149.760
> > Available to AAL 135.632
>
> > The reader can apply their favorite packet size distributions to these
> > numbers.
> > Having said all that, I am not sure where that leaves us.
>
> That leaves us with the throughput of two DS3 links. It doesn't seem worth
> the effort given how short term a solution it is.
I am not sure I follow your arithmetic. The line rate on a DS-3 is
44.736 Mbps. You need to subtract several overheads from that: at
least some DS-3 and some PPP overhead.
How does that add up to half of the throughput of an OC-3c IP/ATM link?
As long as I took this opportunity to inquire, what to you mean by
"given how short term a solution it is?"
-tjs
