Initial Congestion window size of TCP

[NITK]

Hi ns3 users
I want to how I can change the initial congestion window size of TCP in ns3.
Means in which file I have to change the value??
Thanks in advance

[Konstantinos]

The initial congestion window is an attribute in TcpSocketBase class 

http://www.nsnam.org/doxygen/classns3_1_1_tcp_socket_base.html

• InitialCwnd: TCP initial congestion window size (segments)
  • Set with class: ns3::UintegerValue
  • Underlying type: uint32_t 0:4294967295
  • Initial value: 1
  • Flags: construct write read

There is no need to (and you should not) change the source file of that class. You should use the Attribute system to set the value

http://www.nsnam.org/docs/manual/html/attributes.html

Regards,

K.

[vinay singh]

thanks for your quick reply

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Regards,

Vinay Kumar Singh

M.Tech - CSE

NITK Surathkal