# The traffic generators currently available are FTP, # FTP/GENERIC, TELNET, CBR, and HTTP. # # --------------------------------------------------------------- # 1. FTP # # FTP uses tcplib to simulate the file transfer protocol. In order to use # FTP, the following format is needed: # # FTP # # where # # is the client node. # is the server node. # is how many application layer items to send. # is when to start FTP during the simulation. # # If is set to 0, FTP will use tcplib to randomly determine # the amount of application layer items to send. The size of each item is # will always be randomly determined by tcplib. Note that the term "item" # in the application layer is eqivalent to the term "packet" at the network # layer and "frame" at the MAC layer. # # # EXAMPLE: # # a) FTP 0 1 10 0S # # Node 0 sends node 1 ten items at the start of the simulation, # with the size of each item randomly determined by tcplib. # # b) FTP 0 1 0 100S # # Node 0 sends node 1 the number of items randomly picked by tcplib # after 100 seconds into the simulation. The size of each item is # also randomly determined by tcplib. # # # --------------------------------------------------------------- # 2. FTP/GENERIC # # FTP/GENERIC does not use tcplib to simulate file transfer. Instead, # the client simply sends the data items to the server without the server # sending any control information back to the client. In order to use # FTP/GENERIC, the following format is needed: # # FTP/GENERIC # # where # # is the client node. # is the server node. # is how many application layer items to send. # is size of each application layer item. # is when to start FTP/GENERIC during the simulation. # is when to terminate FTP/GENERIC during the simulation. # # If is set to 0, FTP/GENERIC will run until the specified # or until the end of the simuation, which ever comes first. # If is set to 0, FTP/GENERIC will run until all # is transmitted or until the end of simulation, which ever comes first. # If and are both greater than 0, FTP/GENERIC will # will run until either is done, is reached, or # the simulation ends, which ever comes first. # # EXAMPLE: # # a) FTP/GENERIC 0 1 10 1460 0S 600S # # Node 0 sends node 1 ten items of 1460B each at the start of the # simulation up to 600 seconds into the simulation. If the ten # items are sent before 600 seconds elapsed, no other items are # sent. # # b) FTP/GENERIC 0 1 10 1460 0S 0S # # Node 0 sends node 1 ten items of 1460B each at the start of the # simulation until the end of the simulation. If the ten # items are sent the simulation ends, no other items are # sent. # # c) FTP/GENERIC 0 1 0 1460 0S 0S # # Node 0 continuously sends node 1 items of 1460B each at the # start of the simulation until the end of the simulation. # # # --------------------------------------------------------------- # 3. TELNET # # TELNET uses tcplib to simulate the telnet protocol. In order to use # TELNET, the following format is needed: # # TELNET dest> # # where # # is the client node. # is the server node. # is how long the telnet session will last. # is when to start TELNET during the simulation. # # If is set to 0, FTP will use tcplib to randomly determine # how long the telnet session will last. The interval between telnet items # are determined by tcplib. # # # EXAMPLE: # # a) TELNET 0 1 100S 0S # # Node 0 sends node 1 telnet traffic for a duration of 100 seconds at # the start of the simulation. # # b) TELNET 0 1 0S 0S # # Node 0 sends node 1 telnet traffic for a duration randomly # determined by tcplib at the start of the simulation. # # # --------------------------------------------------------------- # 4. CBR # # CBR simulates a constant bit rate generator. In order to use CBR, the # following format is needed: # # CBR # # # where # # is the client node. # is the server node. # is how many application layer items to send. # is size of each application layer item. # is the interdeparture time between the application layer items. # is when to start CBR during the simulation. # is when to terminate CBR during the simulation. # # If is set to 0, CBR will run until the specified # or until the end of the simuation, which ever comes first. # If is set to 0, CBR will run until all # is transmitted or until the end of simulation, which ever comes first. # If and are both greater than 0, CBR will # will run until either is done, is reached, or # the simulation ends, which ever comes first. # # EXAMPLE: # # a) CBR 0 1 10 1460 1S 0S 600S # # Node 0 sends node 1 ten items of 1460B each at the start of the # simulation up to 600 seconds into the simulation. The interdeparture # time for each item is 1 second. If the ten items are sent before # 600 seconds elapsed, no other items are sent. # # b) CBR 0 1 0 1460 1S 0S 600S # # Node 0 continuously sends node 1 items of 1460B each at the start of # the simulation up to 600 seconds into the simulation. # The interdeparture time for each item is 1 second. # # c) CBR 0 1 0 1460 1S 0S 0S # # Node 0 continuously sends node 1 items of 1460B each at the start of # the simulation up to the end of the simulation. # The interdeparture time for each item is 1 second. # # # --------------------------------------------------------------- # 5. HTTP # # HTTP simulates single-TCP connection web servers and clients. Bruce Mah # has gathered packet traces of HTTP network conversations, and produced # CDFs for "the size of HTTP items retrieved, number of items per 'Web page', # think time, and user browsing behavior." # (http://www.ca.sandia.gov/~bmah/Software/HttpModel/) # # This model has been implemented for GloMoSim, and the following format # describes its use for servers: # # HTTPD
# # where # #
is the node address of a node which will be serving # Web pages. # # For HTTP clients, the following format is used: # # HTTP
... # # where # #
is the node address of the node on which this client resides # is the number of server addresses which will follow # # . # . # are the node addresses of the servers which this client # will choose between when requesting pages. There must # be "HTTPD
" lines existing separately for each of # these addresses. # is the start time for when the client will begin requesting # pages # is a ceiling (specified in units of time) on the amount of # "think time" that will be allowed for a client. The # network-trace based amount of time modulo this threshhold # is used to determine think time. # # EXAMPLE: # # HTTPD 2 # HTTPD 5 # HTTPD 8 # HTTPD 11 # HTTP 1 3 2 5 11 10S 120S # # There are HTTP servers on nodes 2, 5, 8, and 11. There is an HTTP # client on node 1. This client chooses between servers {2, 5, 11} only # when requesting web pages. It begins browsing after 10S of simulation # time have passed, and will "think" (remain idle) for at most 2 minutes # of simulation time, at a time. #FTP 0 1 10 150S #TELNET 2 3 10S 150S #CBR 18 16 10000 512 5S 70S 100S #CBR 10 28 10000 512 2.5S 82.49S 199S #CBR 21 0 10000 512 0.8S 91.39S 248S CBR 0 2 0 1500 10MS 0 0 #CBR 1 2 0 1500 10MS 0 0 #CBR 1 2 0 1500 30MS 0 0 #CBR 2 3 0 1500 30MS 0 0 #CBR 14 17 10000 512 1.1S 107.8S 274S