The protocols file contains a list of protocols
known to the system, plus the identification number and one or more
aliases for each. It is unlikely that you will need to edit the
protocols file, but you may need to install and link it.
Creating and Linking Protocols File |
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You may already have a protocols file installed on your system.
If you know that you have such a file, and it is accessible by the
POSIX file name /etc/protocols
you may skip these steps.
If not, follow the steps below to create and link the protocols
file, PROTOCOL.NET.SYS. If you
have such a file, but are unsure whether or not it is linked, perform
step 2 only.
Use the COPY command
to create the protocols file. Enter:
:COPY PROTSAMP.NET.SYS, PROTOCOL.NET.SYS
Make sure that you enter the singular form of protocol in
the new MPE file name. That is, "PROTOCOL" and
not "PROTOCOLS" should appear on the right side
of the COPY command.
Create a symbolic link from /etc/protocols
in the POSIX name space to PROTOCOL.NET.SYS.
Enter:
:NEWLINK /etc/protocols, PROTOCOL.NET.SYS
Again, make sure that you enter the singular form of protocol
in the new MPE file name PROTOCOL.NET.SYS.
Viewing Protocols File |
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Use an MPE text editor to open the file. It is unlikely that
you will need to edit the file, but you can look at it now to familiarize
yourself with its contents.
# This file associates protocol numbers with official protocol names and
# aliases. This allows the user to refer to a protocol by a symbolic
# name instead of a number. For each protocol a single line should be
# present with the following information:
#
# The form for each entry is:
# <official protocol name> <protocol number> <aliases>
#
# See the Configuring and Managing MPE/iX Internet Services Manual
# for more information (HP Part No. 32650-90835).
#
# Note: The entries cannot be preceded by a blank space.
#
11 tcp 6 TCP # transmission control protocol
12 udp 17 UDP # user datagram protocol |
Other Sources of Information |
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You may find the following books useful when you are working
with Internet Services:
Unix Network Programming
written by W. Richard Stevens. New Jersey: Prentice Hall, 1990
