89 lines
2.5 KiB
Groff
89 lines
2.5 KiB
Groff
.\" @(#)ipalloc.netrange.5 1.1 94/10/31 SMI;
|
|
.TH IPALLOC.NETRANGE 5 "19 February 1988"
|
|
.SH NAME
|
|
ipalloc.netrange \- range of addresses to allocate
|
|
.SH SYNOPSIS
|
|
.B /etc/ipalloc.netrange
|
|
.SH AVAILABILITY
|
|
.LP
|
|
Available only on Sun 386i systems running a SunOS 4.0.\fIx\fR
|
|
release or earlier. Not a SunOS 4.1 release feature.
|
|
.SH DESCRIPTION
|
|
.IX "ipalloc.netrange file" "" "\fLipalloc.netrange\fP file"
|
|
.LP
|
|
This file, if it exists on the
|
|
Network Information Service
|
|
(\s-1NIS\s0)
|
|
master of the
|
|
.B hosts.byaddr
|
|
map, specifies the ranges of
|
|
.SM IP
|
|
addresses that can be allocated by the
|
|
.BR ipallocd (8C)
|
|
daemon.
|
|
This allows multiple address assignment authorities, probably in
|
|
multiple administrative domains, to coexist
|
|
on the same
|
|
.SM IP
|
|
network by preallocating ranges of addresses.
|
|
If this file does not exist, the daemon assumes that all
|
|
addresses not listed in the
|
|
.B hosts
|
|
map may be freely allocated.
|
|
.PP
|
|
This file can contain blank lines.
|
|
Comments begin with a
|
|
.RB ` # '
|
|
character and extend to the end of the current line.
|
|
Ranges of free addresses are specified on one line per network
|
|
or subnetwork.
|
|
.PP
|
|
The first token on the line is the
|
|
.SM IP
|
|
address, in four part \*(lqdot\*(lq notation
|
|
as also used in the
|
|
.B hosts
|
|
file, of the network or subnetwork described.
|
|
It is separated from the second token by white space.
|
|
The second token is a comma-separated list of local host number ranges on that
|
|
network.
|
|
These ranges take two forms:
|
|
a single number specifies just that local host number,
|
|
and two numbers separated by a dash specify all local host
|
|
numbers starting at the first number and ending at the second.
|
|
In the case of a subnet, host numbers not in that subnet are excluded.
|
|
.PP
|
|
For example, the following file would specify that a subset of the
|
|
addresses on the class C network 192.9.200.0 may be allocated, and
|
|
only some of the addresses on two particular
|
|
subnets of the class B network 128.255.0.0 may be allocated.
|
|
In any case, only non-broadcast addresses not listed in the
|
|
.B hosts
|
|
map are subject to allocation:
|
|
.LP
|
|
.RS
|
|
.ft B
|
|
# We have three network cables administered using automatic
|
|
# IP address allocation.
|
|
.sp
|
|
192.9.200.0 50-100,200-254
|
|
128.255.210.0 3,5,7,9,100-110
|
|
128.255.211.0 1-254
|
|
.ft
|
|
.RE
|
|
.SH "SEE ALSO"
|
|
.BR hosts (5),
|
|
.BR netmasks (5),
|
|
.BR ipallocd (8C)
|
|
.SH BUGS
|
|
.LP
|
|
There is a silent limit of twenty ranges per network.
|
|
.SH NOTES
|
|
.LP
|
|
The Network Information Service
|
|
(\s-1NIS\s0)
|
|
was formerly known as Sun Yellow Pages
|
|
(\s-1YP\s0).
|
|
The functionality of the two remains the same;
|
|
only the name has changed.
|