# $Id: masks,v 1.7 2004/03/20 11:38:17 zacheiss Exp $

# This file specifies the netmasks for each network supported by the
# Athena environment.  The format for lines in the file is:
#
#	address		significant-bits	netmask-bits	[gateway]
#
# The number of netmask bits for a given IP address is the value of
# <netmask-bits> on the first line for which <address> matches the
# first <significant-bits> bits of the given address.  If a gateway
# is not given, the gateway is assumed to be one greater than the
# network address.
#
# The contents of this file are maintained by Athena release
# engineering.  If you edit this file on your workstation, it will be
# replaced at the next update and your changes will be lost.  If you
# have local changes to make, create or add to
# /etc/athena/masks.local, which has the same file format as this
# file.  Entries in /etc/athena/masks.local take precedence over
# entries in this file.
#
# The shell script /etc/athena/netparams uses this file to compute the
# network, broadcast, and gateway address for a given IP address.  See
# the comments at the top of that file for usage information.

# Most MITnet addresses begin with "18" and have a 16-bit netmask.
# 18.7 is being used in IS machine rooms with a 24-bit netmask.
# At least parts of 18.7.1 are being used as /30s for servers that
# don't like to have their IP address changed.
# Bits of LCS also have a 24-bit netmask, according to 
# wollman@lcs.mit.edu, 1/12/98.
# 18.101 is being used for IS internal experiments, with a 28 bit netmask.
18.7.1.0	24	30
18.7.0.0	16	24
18.24.0.0	16	24
18.26.0.0	16	24
18.101.0.0	16	28
18.0.0.0	8	16

# WHOI has a class B subnetted to 22 bits.  128.128.16 has a funny
# gateway address.
128.128.16.0	22	22	128.128.16.7
128.128.0.0	16	22

# More AI Lab configuration, from foley, 1/24/03
128.52.29.0	24	24	128.52.29.10
# AI lab configuration, from bruce@ai.mit.edu, 1/12/98
128.52.32.0	24	24	128.52.32.10
128.52.37.0	24	24	128.52.37.10
128.52.38.0	24	24	128.52.38.10
128.52.39.0	24	24	128.52.39.10
128.52.54.0	24	24	128.52.54.10

# Stata Center configuration, see http://tig.csail.mit.edu/stata-net.html
128.30.0.0	25	25
128.30.0.192	27	27
128.30.0.244	30	30
128.30.0.248	30	30
128.30.0.252	30	30
128.30.2.0	24	24
128.30.3.0	24	24
128.30.4.0	23	23
128.30.6.0	23	23
128.30.16.0	20	24
128.30.32.0	22	22
128.30.36.0	24	24
128.30.40.0	22	22
128.30.44.0	24	24
128.30.48.0	22	22
128.30.52.0	22	22
128.30.56.0	22	22
128.30.60.0	24	24
128.30.64.0	22	22
128.30.72.0	22	22
128.30.76.0	22	22
128.30.80.0	22	22
128.30.84.0	24	24
128.30.86.0	24	24
128.30.88.0	22	22
128.30.92.0	24	24
128.30.96.0	22	22
128.30.100.0	24	24
128.30.104.0	22	22
128.30.108.0	24	24
128.31.0.0	24	24
128.31.1.0	24	24
128.31.4.0	22	22
128.31.8.0	22	22
128.31.16.0	24	24
192.12.11.0	24	24