NETMASKS(4-SVR4)    RISC/os Reference Manual     NETMASKS(4-SVR4)



NAME
     netmasks - network mask data base

DESCRIPTION
     The netmasks file contains network masks used to implement
     IP standard subnetting.  For each network that is subnetted,
     a single line should exist in this file with the network
     number, any number of SPACE or TAB characters, and the net-
     work mask to use on that network.  Network numbers and masks
     may be specified in the conventional IP `.'  notation (like
     IP host addresses, but with zeroes for the host part). For
     example,

          128.32.0.0 255.255.255.0

     can be used to specify that the Class B network 128.32.0.0
     should have eight bits of subnet field and eight bits of
     host field, in addition to the standard sixteen bits in the
     network field.

FILES
     /etc/netmasks

SEE ALSO
     ifconfig(1M)

     Postel, Jon, and Mogul, Jeff, Internet Standard Subnetting
     Procedure, RFC 950, Network Information Center, SRI Interna-
     tional, Menlo Park, Calif., August 1985.


























                        Printed 11/19/92                   Page 1