Hi All,

The problem of NULL handler was occuring due to the forward method. In this
method Iface is not defined. If we define it in the method then it gives the
error mentioned. I replaced the Iface with rt_interface and it worked
without error.

Prof Ramon, Please correct me if  I am wrong.

Thanks

Kiran

On Thu, Apr 9, 2009 at 5:09 PM, Kiran K Chauhan <kiran.c...@gmail.com>wrote:

> Thanks Sir, I modified the command method for AODV. Now when I run the
> example I do not get any error, but nothing gets written in the trace
> file/nam file.
>
> On command window what I get is
>
> num_nodes is set 8
> INITIALIZE THE LIST xListHead
> Starting Simulation...
> channel.cc:sendUp - Calc highestAntennaZ_ and distCST_
> highestAntennaZ_ = 1.5,  distCST_ = 212.8
> SORTING LISTS ...DONE!
> *Scheduler: attempt to schedule an event with a NULL handler.  Don't DO
> that.
>
> *Any suggestions !! Thanks for your help
>
> Regards
> Kiran
>
>
>
>
> On Thu, Apr 9, 2009 at 4:34 PM, Ramon Aguero <ra...@tlmat.unican.es>wrote:
>
>> Hi Kiran,
>>
>> I think you need to modify the command method of the AODV routing agent. I
>> did not include that in the AODV specific information, but you need to
>> make the changes as shown in the corresponding Listing for the generic
>> routing agent class (I am not currently looking at the howto, but I think
>> it was Listing 5.2).
>>
>> Hope it helps,
>> Ramón
>>
>> > Hi All,
>> >
>> >
>> > I made the modifications in the Ns2.33 as given in the PDF by
>> Prof.Ramon.
>> > But after successful compilation when i run a simple tcl script it gives
>> > error as listed. I am not able to find out the reason for the error.
>> >
>> > INITIALIZE THE LIST xListHead
>> > (_o19 cmd line 1)
>> >     invoked from within
>> > "_o19 cmd if-queue 0 _o22"
>> >     invoked from within
>> > "catch "$self cmd $args" ret"
>> >     invoked from within
>> > "if [catch "$self cmd $args" ret] {
>> > set cls [$self info class]
>> > global errorInfo
>> > set savedInfo $errorInfo
>> > error "error when calling class $cls: $args" $..."
>> >     (procedure "_o19" line 2)
>> >     (SplitObject unknown line 2)
>> >     invoked from within
>> > "$agent if-queue $i [$self set ifq_($i)]"
>> >     (procedure "_o16" line 27)
>> >     (Node/MobileNode add-target line 27)
>> >     invoked from within
>> > "$self add-target $agent $port"
>> >     (procedure "_o16" line 15)
>> >     (Node attach line 15)
>> >     invoked from within
>> > "$node attach $ragent [Node set rtagent_port_]"
>> >     (procedure "_o3" line 82)
>> >     (Simulator create-wireless-node line 82)
>> >     invoked from within
>> > "_o3 create-wireless-node"
>> >     ("eval" body line 1)
>> >     invoked from within
>> > "eval $self create-wireless-node $args"
>> >     (procedure "_o3" line 23)
>> >     (Simulator node line 23)
>> >     invoked from within
>> > "$ns_ node"
>> >     invoked from within
>> > "set node0 [$ns_ node]"
>> >     (file "multi.tcl" line 52)
>> >
>> >
>> > Please help to resolve the problem.
>> >
>> > Thanks.
>> >
>> > Regards
>> > Kiran
>> >
>>
>>
>>
>>
>
>
> --
>
> ........................................................................................................................................................
> Every footstep in life is full of possibilities we just need to know our
> ability to explore them
>
> ........................................................................................................................................................
>
> ........................................................................................................................................................
>



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Every footstep in life is full of possibilities we just need to know our
ability to explore them
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