From: Richard Dumoulin (richard.dumoulin@vanco.es)
Date: Tue May 11 2004 - 18:38:46 GMT-3
The link says also the following:
"Note On the last hop router, the ip multicast helper-map interface
configuration command automatically introduces ip igmp join-group
group-address on that interface. This command must stay on that interface
for the intermediate IP multicast helper feature to work. If you remove the
ip igmp join-group command, the feature will fail.
"
But in my config I cannot see the igmp jin command automatically added !!
--Richard
> -----Original Message-----
> From: Richard Dumoulin
> Sent: martes, 11 de mayo de 2004 22:30
> To: 'ccielab@groupstudy.com'
> Subject: Multicast helper
>
>
>
> The doc-cd
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fi
> pr_c/ipcpt3/1cfmulti.htm#1002616
> <http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/f
> ipr_c/ipcpt3/1cfmulti.htm#1002616> says to configure "ip
> directed-broadcast" on both the first hop router and the last hop router.
> I think I have read somewhere else that it's only needed on the egress
> interface of the last hop router. This is because it is on this interface
> that the directed broadcast is going out.
> So who is right ?
>
> --Richard
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