Network Working Group                                         Jon Postel
Request for Comments: 317                                       UCLA-NMC
NIC: 9347                                                 March 20, 1972


    Official Host-Host Protocol Modification:  Assigned Link Numbers


     I.  Links 192,193,194 and 195 (decimal) are assigned for use by the
         Message Switching Protocol (MSP) experiment.

    II.  Links 159 through 190 (decimal) are assigned for network
         measurement purposes.  These links are to be used only under
         the direction of the Network Measurement Center (NMC).  Contact
         Vint Cerf, (213) 825-2368 for additional information.

   III.  On page 28 of NIC 8246 the link assignment table should read:

         LINK NUMBER            ASSIGNMENT

         0                      Control Link

         2-71                   Available for Connection

         1, 72-158              Reserved--not for current use

         159-191                To be used only for measurement work
                                under the direction of the Network
                                Measurement Center at UCLA

         192-195                To be used for the Message Switching
                                Protocol experiment

         196-255                Available for private experimental use









        [This RFC was put into machine readable form for entry]