March NSFNET T1 Usage by Service

Wed Apr 1 15:49:34 UTC 1992

            NSFNET T1 Usage by Service

                    March 1992

  Service Type             % Packets   % Bytes
  ============             =========   =======
  File exchange                29         52 
  Networked mail               21         22 
  Interactive                  14          5 
  Name lookup                   7          4 
  Other TCP/UDP services       27         16 
  Non TCP/UDP services          2          1 
                              ---        --- 
                              100        100 

  The categories above are defined as follows:
  File exchange           ftp: data and control 
                          (tcp ports 20, 21)
  Networked mail          smtp, nntp, vmnet, uucp 
                          (tcp ports 25, 119, 175, 540)
  Interactive             telnet, finger, who, login
                          (tcp ports 23, 79, 513, udp port 513)
  Name lookup             domain name service
                          (udp port 53, tcp port 53)
  Other TCP/UDP services  all tcp/udp ports not included above
                          (e.g. irc, talk, X-windows, appletalk)
  Non-TCP/UDP services    icmp, egp, etc.

  More detailed information is available for anonymous FTP from
  NIC.MERIT.EDU (the Merit NIC Services machine) in the file
  "t1-9203.ports" on the nsfnet/statistics/1992 directory.