Re: TCP/IP Host table questions

What you did is the same as using a host table on your PC...

If you use CFGTCP option 12 look at this:

Host name search priority . . . *LOCAL *REMOTE, *LOCAL, *SAME

If this is *LOCAL, it will search the host table entries first to resolve a
host name. If it's *REMOTE it will first attempt using the DNS specified
on this option then go to the host table entries.

It is of my opinion that host table entries should only be used on a need
to use basis. For most things you will rely on your DNS servers. I have
had customers add entries for google.com, office365, etc in these and it
totally messes things up as those IPs are not static as they use server
farms.

If you had anything with ABC24 hardcoded it will now fail. You can add
more than one host name to an IP address, but again, this is bad practice
unless it's a rare instance where it needs to be done and it's understood
why it's being done.

One reason for me is resolving my local servers to their local IPs as I run
multiple web servers and instead of making a request to the public IP I
want it to go to the local IP.

On Mon, Apr 22, 2024 at 2:18 PM K Crawford <kscx3ksc@xxxxxxxxx> wrote:

I have some questions on the TCP/IP Host table (CFGTCP > option 10 Work
with TCP/IP host table entries).
When and how is this table used?
What is its relationship to other servers?

I have an entry
10.1.14.170 ABC24
I changed it to
10.1.14.170 ABC24.XYZ.LOCAL

Before the change everything was okay but after the change had failures of
jobs. As you can guess I changed it back.

I have other IP's maped similarly.
10.1.14.128 EFG33 EFG33.XYZ.LOCAL
and these work.

I had asked some questions of my network people because the names/IPs of
some servers were changing. I was trying to make sure this table was
correct. They said I should make the change above. Obviously not.

I guess I am trying to understand this table and how to use it. If you
have a link to a document that explains it in simple terms that would be
great.

TIA

--
Kerwin Crawford
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