Packet Grabbing in NS

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Packet Grabbing in NS

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06-25-2004, 01:53 AM	#1
ashutoshsharma LQ Newbie Registered: Mar 2004 Location: Ahemdabad Distribution: Red Hat Posts: 6 Rep:	Packet Grabbing in NS Hello I am presently working on Network Simulator under Linux. Actually I have a problem that I wanted to grab a packet which is getting transmitted through a link between nodes in a network setup and then I want the contents of that packet to be modified and then transmit that packet at my specified time. In simple terms, suppose there are 2 nodes in a network n1, n2 and a duplex link between them. Now node n1 is having TCP source connected to FTP and node n2 is having TCP Sink. Now suppose packet number 5 is on the link which is to be transmitted. So first of all it will get queued to the Queue of the Link. So I want to alter the packet 5 say modifying the data that it carries, and then I will forward that packet to the node n2 at my specified time..... How is it possible in NS scripting Language with OTcl... Please Help me... Regards, Ashutosh

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