Thanks, Pat, for the response.

Here's what testing told me.  Apparently the hardware configuration area
is one of the all-or-nothing sections where the OBEYFILE replaces
everything that TCPIP already was using.  

Feeding my original OBEYFILE into TCPIP caused me to lose both my ports.
I also lost all my route information, including defaults.  Once I added
all the DEVICE, LINK, HOME, and ROUTE information for both my ports to
the OBEYFILE, I was able to successfully activate a new IP address on
one of the ports. 

Rex

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Patrick O'Keefe
Sent: Friday, January 12, 2007 3:04 PM
To: [email protected]
Subject: Re: Simple TCPIP OBEYFILE question

On Fri, 12 Jan 2007 10:34:23 -0600, Pommier, Rex R. 
<[EMAIL PROTECTED]> wrote:

>...
>I have an OBEYFILE that looks like this:
>
>DEVICE GIGADEV0 MPCIPA
>LINK GIGA00    IPAQENET  GIGADEV0
>HOME
>   172.16.0.7 GIGA00
>START GIGADEV0
>
>This OBEYFILE only contains the configuration information for the port 
>I want to change.  I should be able to feed this OBEYFILE into TCPIP 
>and get the IP address changed without impacting the other OSA port,
right?

No.

You are right about Device and Link defs.  You have to do a DELETE to
get rid of them.  But a HOME statement resets the Home list.  You have
to add all static Home definitions.  (Entries that were added
dynamically - DVIPAs, dynamic XCF links, etc. - will be dynamically
readded.)

>...   Also, do I need to feed the
>BEGINROUTES/ENDROUTES block into the OBEYFILE since that isn't changing

>either?
>...

I think you are safe with BEGINROUTES/ENDROUTES, but we use dynamic
routes and don't use BEGINROUTES/ENDROUTES so I'm not absolutely sure.

Pat O'Keefe 

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