[ns] bandwidth estimation

hello, please, can some one tell me what is the procedure to compute bandwidth when we have UDP connection. for TCP connection the procedure is proc bandwidth1 {} { global ns bpf1 sink set time 0.5 # How many bytes have been received # by the traffic sinks? set bw_

[ns] set window

hi, please what means this command : $tcp set window_ 100 thanks in advance.

[ns] compute RTT

hello can some one tell me a procedure to compute the round trip time thanks in advance