Configuring and Managing MPE/iX Internet Services (August 2002)

Chapter 1
Introduction to Internet Services
Protocols File
22
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 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.