Hi ! 

Thanks for your help!!! 

But I actually did all you
said .... 

What I do in my agent code is that depending
on the context I am routing packets with AODV. 

Do I
have to implement something special concerning the
ifqueue ? 

Valerie.

 --- Martin Wenig 

<wenig <at> i4.informatik.rwth-aachen.de> 

wrote:
> Hi!

 > 
> I have never heard of the class Para_Agent, so i suppose this is your  own code. If it is a subclass of AODV, then it seems  as if you didn't   set the ifqueue variable. In the AODV class it gets  set in the command  method with 

 else if(strcmp(argv[1], "if-queue") == 0) 

{  ifqueue = (PriQueue*)

 TclObject::lookup(argv[2]); 

 if(ifqueue == 0) 

 return TCL_ERROR; 

 return TCL_OK;  } 

 So, if you have a base class, then calling the AODV command-method at   the end of your own command-method could help. Or  you simply copy the  code from above to your command method.Also make sure that in your OTcl script the  interface queue is set to   "Queue/DropTail/PriQueue" or similar. "CMUPriQueue"  doesn't work...  I hope this helps you. 

 Hi, When I run AODV simulations, I get a segmentation fault everytime  

Priqueue::filter() gets called in aodv rt_ll_failed(). Here is what I get from 

gdb: Program received signal SIGSEGV, Segmentation fault. 

0x08125b32 in PriQueue::filter(int) (this=0x0, id=8) 

at queue/priqueue.cc:158 158             for(p = q_->head(); p; p =
> p->next_)

 { gdb) bt #0  0x08125b32 in PriQueue::filter(int) (this=0x0,
> >id=8)
> >    at queue/priqueue.cc:158
> >#1  0x081edc4f in Para_Agent::rt_ll_failed(Packet*)
> >(this=0x8639ca8,
> >    p=0x870ef10) at para/para.cc:2529
> >#2  0x081eda12 in aodv_rt_failed_callback
> >(p=0x870ef10, arg=0x8639ca8)
> >    at para/para.cc:2475
> >#3  0x0810cb60 in Mac802_11::RetransmitRTS()
> >(this=0x863ad08)
> >    at mac/mac-802_11.cc:1489
> >#4  0x0810b934 in Mac802_11::send_timer()
> >(this=0x863ad08)
> >    at mac/mac-802_11.cc:938
> >#5  0x0810b87d in Mac802_11::sendHandler()
> >(this=0x863ad08)
> >    at mac/mac-802_11.cc:908
> >#6  0x0812916a in TxTimer::handle(Event*)
> >(this=0x863aea0)
> >    at mac/mac-timers.cc:204
> >........
> >
> >
> >Is this a bug in Ns2 or in my code ??? Is there a
> >solution to this ???? Your help is appreciated !!!
> >
> >Regards,
> >
> >
> >
> >  
> 
> 
> -- 
>
+-----------------------------------------------------------------+
> | Dipl.-Inform. Martin Wenig                        
>              |
> | Aachen University of Technology       Phone: +49
> (241) 80-21416 |
> | Computer Science Department           Fax:   +49
> (241) 80-22220 |
> | Communication and Distributed Systems             
>              |
> | Ahornstr 55, D-52074 Aachen, Germany              
>              |
> | http://www-i4.informatik.rwth-aachen.de/          
>              |
>
+-----------------------------------------------------------------+
>first I think it's right ,but the catalog is wrong ,it should be at /tcl/lib/ns-mobilenode.tcl then change it ,it will be all right.