HP 3000 Manuals HP 3000 Manuals
The protocols file
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 the protocols file
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.
1. 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.
2. 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 the protocols file
Once you have created the symbolic link between PROTOCOL.NET.SYS and
/etc/protocols, you may use either a POSIX or 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
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
* Telnet/iX User's Guide (36957-90154)