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Re: Traffic "appearance" on an ATM/LANE network--Frame/Cell

  • From: <agallo@foghorn.nit.gwu.edu>
  • Date: Fri, 21 Apr 2000 20:34:20 GMT
  • Organization: The George Washington University
  • User-Agent: tin/pre-1.4-980818 ("Laura") (UNIX) (SunOS/5.8 (sun4u))
  • X-Complaints-To: news@nit.gwu.edu


bdonalds <bdonaldsNObdSPAM@hotmail.com.invalid> wrote:

In setting up the LECS, you can specify multiple options that make the ELAN look like
a traditional LAN enivironment, however, it has nothing to do with cell switching.
Those settings are for LEC configuration and behavior.  It may be an over
simplification, but once the frames are broken down into cells, the ATM switches
don't really care about the higher level options of LANE (though getting into 
packet or frame level discard, I believe the switches do keep track of the start and
stop packets via the Payload Type Indicator).


Andrew Gallo                                                    202-994-9026
IS Engineer
The George Washington University
*******************************************
PGP Key available at http://gwu.edu/~agallo
*******************************************



> Okay...I didn't really word that question very well, and
> overcomplicated it.  Basically, my question is, when you
> set up a LEC/LES/BUS, you specify whether the ELAN is 802.3
> or 802.5, along with an MTU (usually 1516 and 4544
> respectively).  What is the significance of this setting as
> far as a purely ATM switch?  Or, is that configuration
> setting meaningful to the bridging device only?

> Thanks,

> Bryan