Re: [ns] Is it possible ?!!!

[Haobo Yu <haoboy@packetdesign.com>]

You should be really careful using Simulator::lossmodel{}, which assumes a
WIRED link structure but understands nothing about a wireless link. You
should perhaps look for ways to directly insert an error model into a
wireless link, but at the top of my mind I don't know how.

- Haobo

On Wed, 31 Jan 2001, Al-kahtani wrote:

> hi ns experts,
> Sorry for repeating this question. 
> It is most urgent to complete my simulation.
> I am doing little research by using ns-2.1b7a on Linux machine.
> I tried to build Error Model in wireless simulation but it gave me error.
> The following are the model and the error 
> 
> I would appreciate your help very much
> Thanks
> 
> THE BASIC MODEL:
> 
> source ns-errmodel.tcl
> set emm [new ErrorModel ]
> $emm unit pkt
> $emm set rate_ 0.2
> $emm ranvar [new RandomVariable/Uniform]
> 
> $emm drop-target [new Agent/Null]
> $ns_ lossmodel $emm $node_(6) $node_(7)   
> 
> THE ERROR:
> 
> invalid command name ""
>     while executing
> "$link errormodule $lossobj"
>     (procedure "_o4" line 3)
>     (Simulator lossmodel line 3)
>     invoked from within
> "$ns_ lossmodel $emm $node_(6) $node_(7)"