Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!ucsd!nosc!crash!ncr-sd!se-sd!crhodes
From: crhodes@se-sd.SanDiego.NCR.COM (Chris Rhodes)
Newsgroups: comp.protocols.iso
Subject: Re: ESIS multicast
Message-ID: <3490@se-sd.SanDiego.NCR.COM>
Date: 11 Jul 90 23:26:57 GMT
References: <12183@encore.Encore.COM> <38106@sequent.UUCP>
Organization: NCR Corporation, Systems Engineering - San Diego
Lines: 21


Under what circumstances are multicast addresses used?

Is it for Network Entity traffic only, or can multicast addresses
be used as SNPA addresses? 

The advantage of using multicast addresses as SNPA addresses being 
that configuration changes would not be required whenever a 
network card is replaced in an ES or IS. A possible problem 
however, if multiple ISs exist on the one LAN, which IS does the 
routing?

If this is simply an implementation issue, does anyone have
any thoughts of pros and cons of whether or not to use multicast
addresses this way?

Regards,
-- 
*  Chris Rhodes, Communication Network Systems, NCR, SE-San Diego *
*  Email Chris.Rhodes@SanDiego.NCR.COM                            *
*  Phone (619) 693 5511   Fax (619) 693 5494                      *