[1456] in North American Network Operators' Group
Re: value of co-location
daemon@ATHENA.MIT.EDU (Dorian Kim)
Fri Jan 19 17:54:30 1996
Date: Fri, 19 Jan 1996 17:25:40 -0500 (EST)
From: Dorian Kim <dorian@CIC.Net>
To: Shikhar Bajaj <bajaj@faline.bellcore.com>
cc: nanog@merit.edu
In-Reply-To: <199601192221.RAA19854@faline.bellcore.com>
On Fri, 19 Jan 1996, Shikhar Bajaj wrote:
> You are correct up til you get to the efficiency at the AAL level. AAL-5 does
> not have any SAR overhead but it does have 8 bytes of CS overhead. Now, this
> overhead is on a per PDU basis and NOT a per cell basis. Thus, you maximum
> efficiency will be
>
> 36.864 * [(x-8) / x] where x = PDU size in bytes.
>
> Thus, if you just send 64-byte packets, your min throughput will
> be 36.8 * (56 / 64) = 32.3 Mbps.
>
> Of course, larger PDUs are more efficient.
Thanks for the correction. I knew that number didn't quite look right.
-dorian
______________________________________________________________________________
Dorian Kim Email: dorian@cic.net 2901 Hubbard Drive
Network Engineer Phone: (313)998-6976 Ann Arbor MI 48105
CICNet Network Systems Fax: (313)998-6105 http://www.cic.net/~dorian
