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Cell Relay Retreat>List Archive>month:1995-Oct> msg00043



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Multicasting with ATM - a concern

  • From: Grenville Armitage <gja@thumper.bellcore.com>
  • Date: Tue, 17 Oct 1995 13:08:40 -0400
  • CC: 0006078043@mcimail.com, ip-atm@matmos.hpl.hp.com, gja@thumper.bellcore.com



>>> From: Tim Dwight <0006078043@mcimail.com>
	[..]
>>> To my knowledge there is no 'true mpt-to-mpt ATM level service'.
>>> mpt-mpt connectivity is a concept, not a service, whose most direct
>>> analogue at the ATM layer will be a mesh of pt-mpt connections.  The
>>> difficulty in supporting true mpt-mpt is in bandwidth allocation (i.e.,
>>> in the connection-oriented nature of ATM).

 Rick Bubenik replie:
>>I'm aware of several ATM switches that support a true mpt-to-mpt
>>(bidirectional) ATM level service.

Could you describe in more detail what is meant by 'true' in
this context? Do you mean switches that allow bi-directional
mpt-mpt VPs (rather than VCs), where the endpoints must still
manage the VCI distribution/allocation per source?

cheers,
gja