Installation instructions for TFMCC

(version 02/25/2002)

A newer version of TFMCC with experimental support for variable packet size congestion control is available upon request (just send me an e-mail).

• In the main ns directory backup formula.h to formula-old.h
  
  
• Copy the following files into the main ns directory:
  tfmcc.h, tfmcc-sink.h, tfmcc.cc, tfmcc-sink.cc, formula.h, formula.cc,
  
  
• In tfrc-sink.cc include "formula.h" instead of "formula-with-inverse.h":
  
  

  //#include "formula-with-inverse.h"
  #include "formula.h"
        

• In packet.h make the following additions:
  
  
  • below

    #define HDR_TFRC(p)     (hdr_tfrc::access(p))
    	    

    add the line:

    #define HDR_TFMCC(p)    (hdr_tfmcc::access(p))
    	    

    
    
  • below
    

    PT_TFRC_ACK,

    add the lines:

    PT_TFMCC,
    PT_TFMCC_ACK,
    	    

  • below

    name_[PT_TFRC_ACK]= "tcpFriendCtl";
    	    

    add the lines:

    name_[PT_TFMCC]= "tfmcc_data";
    name_[PT_TFMCC_ACK]= "tfmcc_ack";
    	    

• In some older versions of ns you may have to add #include "formula.h" to tfrc.cc and tfrc-sink.cc and delete the same line from tfrc.h and tfrc-sink.h
  
  
• In tcl/lib/ns-packet.tcl add the following lines below the line TFRC_ACK:

  TFMCC
  TFMCC_ACK
        

• In tcl/lib/ns-default.tcl add the following lines:

  Agent/TFMCC set packetSize_ 1000
  Agent/TFMCC set fairSize_ 1000; # be fair to TCP which has fairSize_ as packet size
  Agent/TFMCC set ndatapack_ 0 ;	# Number of packets sent
  Agent/TFMCC set overhead_ 0 ;	# If > 0, dither outgoing packets
  Agent/TFMCC set ssmult_ 2.0 ; 	# Rate of increase during slow-start:
  Agent/TFMCC set printStatus_ 1; # print status messages
  Agent/TFMCC set rate_ 0
  Agent/TFMCC set bval_ 1;	# Value of B for TCP formula
  Agent/TFMCC set t_factor_ 6;	# feedback delay = t_factor * max_rtt
  Agent/TFMCC set min_rate_ [Agent/TFMCC set packetSize_]; # set minimum rate to 1 packet/s
  Agent/TFMCC set Initial_RTT_ 0.5;
  Agent/TFMCC set InitRate_ [expr 2.0 * [Agent/TFMCC set packetSize_]/[Agent/TFMCC set Initial_RTT_]]; # --> 2 packets per max. RTT
  Agent/TFMCC set sndr_id_ 0;
  
  Agent/TFMCCSink set packetSize_ 40
  Agent/TFMCCSink set fairSize_ 1000; # be fair to TCP which has fairSize_ as packet size
  Agent/TFMCCSink set aggregatePackets_ true
  Agent/TFMCCSink set aggregateLoss_ false
  Agent/TFMCCSink set InitHistorySize_ 100000
  Agent/TFMCCSink set AdjustHistoryAfterSS_ 1
  Agent/TFMCCSink set NumSamples_ -1
  Agent/TFMCCSink set discount_ 1;	# History Discounting
  Agent/TFMCCSink set printStatus_ 1 ; # print status messages
  Agent/TFMCCSink set smooth_ 1 ;	# smoother Average Loss Interval
  Agent/TFMCCSink set recv_id_ 0;
  Agent/TFMCCSink set df_ 0.9 ;	# decay factor for CLR's RTT estimate
  #Agent/TFMCCSink set ca_ 0; 	# disable RTT congestion avoidance
  Agent/TFMCCSink set rate_ 0
  Agent/TFMCCSink set bval_ 1;	# Value of B for TCP formula
  Agent/TFMCCSink set tight_loop_ 1;	# use tight feedback loop to rep recv
  Agent/TFMCCSink set fbtime_mult_ 6.0;	# T = 6 * RTT
  Agent/TFMCCSink set constant_rate_ 0;	# don't use constant rate for reported rate
        

• In Makefile.in after tfrc.o tfrc-sink.o insert:

        tfmcc.o tfmcc-sink.o formula.o \
        

• Recompile ns with ./configure; make clean; make