Re: [ns] multicast replicator

[Nader Salehi <salehi@isi.edu>]

I am not sure if you could not send any packet to n2 at all.  In DM,
nodes periodically flood the network and nodes that are not in the
mcast group prune themselves out.

Use CtrMcast.  It does what you explained.

Nader


Jian Wang writes:
> Dear NS users,
> 
> I am using ns-2.1b5 and dense mode multicast protocol.
> set mproto DM
> set mrthandle [$ns mrtproto $mproto {}]
> 
> I am trying to modify the multicast replicator of NS
> so that it only sends out data to the nodes in a specific
> group. For example, we have the following topology
> n0-----n1------n2-----n3
>        |
> 	 n4
> 
> n0, n1, and n4 are in a multicast group 0x8003. n2 and n3 are
> not in this group. When n0 sends out data to n1 and n4, n1 will
> forward data to n4, n2 and n3. Is there anyway to modify the
> replicator so that n1 knows that n2 is not in the multicast
> group and only sends data to n4. I know that the objects 
> installed in classifier slots are connectors. However, I
> do not know how to get node ids from connector objects.
> 
> Thanks for your help.
> 
> Jian