I am using NS2 simulator for doing some network simulation and having some problem while setting the MTU value ie maximum transmission unit. I want know what is the default value of MTU in NS2 and how can i change this value according to my need? I want to set different MTU value to observe the behaviour of TCP in different conditions.
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Default value of MTU(MaximumTransmission Unit) in ns2 is generally 1500. Now to change this value according to your research, just go to file "mac-802.3.h" and change the value of "IEEE_8023_MAXFRAME" and compile it once again. You can find this file in
/home/username/ns-allinone-2.xx/ns-2.xx/mac
To know more about MTU and to know what it actually is just visit the following link :
http://www.pointless.net/~jasper/consume/docs/my-docs/mtu.html
