[ns] How to change link properties during simulation?

2009-10-13 Thread Kenneth Zhu
Hello, all! I know that ns-2 can control link up and down during simulation, but is it possible to change the delay and bandwidth during that? If it is possible, how to do that? Could I run "$ns_ duplex-link " again with different argument? Best regards, Kenneth Zhu

[ns] perfect transmission channel?

2009-10-13 Thread pedro chaparro
hi, i'm working on a subject where i need to have a perfect transmission channel , i means, transmit a packet from a node A and received it on a node B wihout loss packets and not either have delays, in summary i'd like to eliminate the functions of the botton layers(link and physical layers). ca

[ns] Block Wireless Transmission in MANET (i.e. around corner, through building, ...)

2009-10-13 Thread hans adlhoch
Dear all, i have a question concerning ns-2.34 wireless transmissions: I'm simulating mobile ad-hoc networks and currently have a city-like layout where the static (roadside) nodes are very close. Some of the nodes are "behind corners" and thus are not supposed to communicate directly. Is there

[ns] DiffServ in wireless network

2009-10-13 Thread aoufi souhila
Hi how to configure DiffServ policies in a wireless network. I really need an illustrative example. I found in the directory tcl / ex / diffserv examples, but they all use a wired network. how in the case of wireless network your help is very useful for me, please