[ns] Date: Fri, 22 Sep 2000 15:05:54 +0800

["" <M8802111@mail.ntust.edu.tw>]

thanks for your answer,
after I change to duplex link.
It is the same problem again.
I use proc to create unicast and mcast node (array) with global command
In mcast proc , use  $s_node($i) enable-mcast $ns          to create mcast node
so I got the problem.

And after I set the mcast protocol (DM)
there is another problem below

ns: _o3 run-mcast: can't read "mrtObject_": no such variable
    while executing
"$mrtObject_ start"
    (procedure "_o10" line 3)
    (Node start-mcast line 3)
    invoked from within
"$node start-mcast"
    (procedure "_o3" line 5)
    (Simulator run-mcast line 5)
    invoked from within
"_o3 run-mcast"

I get confuse now...
maybe Can tell me the step to produce "mcast node and unicast node together"

-----Original Message-----
From: Lloyd Wood [mailto:l.wood@eim.surrey.ac.uk]
Sent: Friday, September 22, 2000 1:08 AM
To: �p�T
Cc: ns-users@mash.cs.berkeley.edu
Subject: Re: [ns] mcast node and unicast node together


On Thu, 21 Sep 2000, [big5] �p�T wrote:

>   hi everybody,
>   I create a unicast node and use simplex link to 
>   connect several mcast node.(direction is mcast to unicast)
>   each node has a agent on it.
>   But I got some problem:    _o13: no target for slot 3
>   _o13 is dmux_ in a node.
>  Can someone tell me how to slove it?

Use duplex links.

You don't say what multicast protocol you're using, but even a
source-based seemingly unidirectional multicast protocol such as DM
needs and assumes the presence of duplex links for reverse pruning.

L.

Now, if you get 'no target for slot 1', that might be slightly
different. That has plagued my large multicast simulations.

<L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>