Re: Next node which is going to be used in the routing ??

[John Heidemann <johnh@ISI.EDU>]

On Wed, 22 Sep 1999 21:45:17 +0200, Abdelhamid Joumdane wrote: 
>Well, I think you wouldn't have this error if the simulation had begun.
>Retry scheduling the command after the simulation begins.

You're right Abdelhamid.  Yoann needs to do lookup after "$ns run".

The code is supposed to report an error message in this case,
but wasn't because of, well, another error.
The following patch fixes the error message:

   -John

Index: route.cc
===================================================================
RCS file: /usr/src/mash/repository/vint/ns-2/route.cc,v
retrieving revision 1.31
diff -u -r1.31 route.cc
--- route.cc	1999/08/30 21:59:20	1.31
+++ route.cc	1999/09/24 21:21:17
@@ -224,7 +224,8 @@
 			int nh;
 			int res = lookup_flat((char*)argv[2], (char*)argv[3], 
 					      nh);
-			tcl.resultf("%d", nh);
+			if (res == TCL_OK)
+				tcl.resultf("%d", nh);
 			return res;
 		}
 	}

>"Yoann NEC, Japan" wrote:
>> 
>> Hello everybody !
>> 
>> MY PURPOSE IS TO KNOW THE NEXT NODE THAT N0 IS GOING TO USE TO REACH N2.
>> 
>> Here is the very simple script :
>> 
>> set n0 [$ns node]
>> set n1 [$ns node]
>> set n2 [$ns node]
>> $ns duplex-link $n0 $n1 1Mb 10ms DropTail
>> $ns duplex-link $n1 $n2 1Mb 10ms DropTail
>> 
>> # get the instance of routelogic
>> set rl [$ns get-routelogic]
>> # perform the lookup
>> $rl lookup [$n0 id] [$n2 id]
>> 
>> but, it is not working ! The "lookup" gets an error and it returns
>> "-279125288"
>> 
>> I WILL BE VERY GREATFUL TO THE PERSON WHO WILL HELP ME.
>> 
>> PLEEEEASE HELP ME !!
>> 
>> Yoann
>