Cell Relay Archive

[Paul Koning <pkoning@xedia.com>]

Thomas Betker wrote:
> 
> Shaheen Ali (ali@mediaone.net) wrote:
> : I have a general ILMI address registration question.  If a host on the
> : user side of a UNI connection (DTE) has multiple addresses to register,
> : do all the addresses have to have the same ESI?
> 
> : So, for example.  If I have two services on my host (one LANE server and
> : one IPOA client for example):
> 
> : ESI                        SEL
> : 00.08.11.00.00.01.01
> : 0A.08.11.00.00.01.02
> 
> : Notice that the ESI fields are different.  If after getting a network
> : prefix, may I register the above two addresses with the upstream
> : switch?  Will the switch be able to deal with the fact that one DTE has
> : two addresses with different ESI fields?
> 
> According to the ILMI Spec., you may register more than one ESI.
> This may be restricted by the switch's implementation, though.

Also, I would question why the end system is using two different ESIs.
The example shown is technically legal since the second ESI has the
"locally administered" flag set.  But it seems a *very* questionable
practice.

The whole purpose of the SEL byte is to allow multiple addressable
entities to exist at a given host without consuming multiple ESIs.

	paul