ahhh ... it is generating IGMP v3 requests? 

Darran Edmundson wrote:

>
> After a bit more investigation, it seems that RAT
> running on the XP box in our AG isn't generating
> the appropriate (v2 membership report) IGMP packet
> when starting.  No wonder then that the router
> doesn't send multicast traffic.  Starting VIC does
> generate these IGMP packets as does RAT (same version)
> on a different XP box.  The latter fact leads me
> to think that a reinstall of XP is in order.
>
> On a related note, I wrote a quick and dirty python
> program to join this multicast address.  And the
> correct IGMP packet is automagically generated by
> the socket.setsockopt() function call.
>
> All very strange, and happening at a much lower
> level than I want to explore ...
>
> Cheers,
> Darran.
>
>

-- 
Bob Riddle (b...@internet2.edu)    Technologist,Internet2
3025 Boardwalk, Suite 100         Ann Arbor, Michigan  48108
Business Phone: 734.913.4257      Fax Number:  734.913.4255

"Math illiteracy affects 7 out of every 5 people"

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