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. > > ------------------------------
--------------------------------- 抢注雅虎免费邮箱3.5G容量,20M附件!