All things related to multicast

[Gordon Rogier <>]

thanks to bill fenner, i got caught on a mis-statement.  i went back and
checked my traces; i only see 0x16 type membership reports coming out of
win2k or winNT.  my earlier reference to the 0x12 was a misstatement (too
many fine details).

looking a little closer, i a slightly better description of the issue
might be that it appears that the 3300 stops/ignores IGMP host membership
reports for some [noticable] period time for a given group upon receiving
an igmpv2 Leave Group message for that specific group; this time appears
to be related to and may be noted as ending when a General Query occurs.

--*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*--
Gordon Rogier                        

            
Network Engineer                     785-864-0381wk 785-550-4468 cell
Great Plains Network                 785-864-9330 FAX

On Thu, 13 Jul 2000, Gordon Rogier wrote:
> bill, i will double check this... i was only working from my recollection
> of network traces..... i tried to be accurate, but maybe i messed up on
> this issue.  :grogier.
> 
> On Thu, 13 Jul 2000, Bill Fenner wrote:
> > >no, actually i would need to clarify that statement.  the hosts i am
> > >testing send a type 0x12 host memebership report in response to a General
> > >Query.  they only send the type 0x16 membership report in response to a
> > >Group Specific Query....
> > 
> > That's bizarre.  Receiving an IGMPv1 membership report (0x12) disables
> > IGMPv2 processing for a given group, so the Querier should never send
> > out Group-Specific Queries if it heard a v1 report...
> > 
> > I have no experience with either NT4 or 2k so I can't help further...
> > 
> >   Bill