I also want to know whether there is any simple way to shut down nodes.
I use "$ns_ node-config -IncomingErrProc UniformErr" to assign nodes
different link loss.
But I have to add a "kill-node" command to shut down nodes.
>------------------------------
>
>Message: 17
>Date: Wed, 27 Jun 2007 21:20:48 +0200 (CEST)
>From: [EMAIL PROTECTED]
>Subject: Re: [ns] shutting down link or node with wireless topology
>To: "Daniel Mahrenholz" <[EMAIL PROTECTED]>
>Cc: ns-users@ISI.EDU
>Message-ID: <[EMAIL PROTECTED]>
>Content-Type: text/plain;charset=iso-8859-1
>
>Hello Daniel,
>
>Thank you, but you didnt say why the solution of simulating a complete
>node failure wouldn't work.
>I understand that shutting down links is not an option since links
>don't
>exist like i supposed but shouldn't i be able to shut down a node in
>wireless like i do in wired scenarios figures?
>
>Patrick
>
>>> I am a new ns user i am trying to simulate a wireless topology using
>>> OLSR
>>> as a routing protocol. I need to simulate a link failure for a short
>>> period of time to study the reactions of OLSR to the failure
>> In a wireless scenario you do not have links, so you cannot shut them
>> down. One option is to simply move a node out of the transmission
> >range
>> of another. This may become difficult for a large number of nodes.
> You
>> could also extend the node to implement something like a MAC filter
>so
>> that a node simply ignores messages from individual sources. But im
>not
>> aware of any such solution currently existing. You could also modify
>the
>> propagation model to create very specific transmission failures, e.g.
>> drop all packets from a specific node (node failure).
>
> Daniel.
>
> --
> Dr.-Ing. Daniel Mahrenholz
> rt-solutions.de GmbH
> Oberl?nder Ufer 190a
> D-50968 K?ln
>
> Web: www.rt-solutions.de
>
> rt-solutions.de
> networks you can trust.
>
>
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