Hi Ed, the following works on a z/9EC:

Double click "CPC" group from HMC, highlight the processor you want to work on, 
then go into "single object operations" mode.  Once there go "CPC" group again, 
highlight the processor, and right click on the mouse and pick the "channels" 
list item.  You should be able the select the PCHIDs/CHPIDs you want and use 
the "Configure On/Off" option under the "CHPID Operations" menu to toggle the 
CHPID/PCHID ON/OFF from there.

Regards
Steve

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of 
Edward Jaffe
Sent: Friday, December 15, 2006 1:03 PM
To: [email protected]
Subject: Confused About Channel Path Reconfiguration from HMC

As a software developer, doing part time sysprog work, I will yield to the 
expertise on this forum to set me straight on system programming matters. 
Here's my latest puzzler:

"z/OS V1.8 System Commands" contains the following in the discussion of the 
CONFIG CHP command:

<IBM Documentation>
Note that if you have systems running on a processor at the z990 level or 
higher, you can automatically reconfigure channel paths on and offline using 
the hardware management console (HMC) instead of issuing the CONFIG command.  
On a z990, you may have multiple logical channel subsystems, which means that 
if an ESCON card fails, you need to reconfigure 15 channels being used across 
30 different partitions in each logical channel subsystem. Automatic CHPID 
reconfiguration lets you issue a reconfiguration request centrally from HMC, 
which in turn triggers the z/OS systems in each partition to issue the CONFIG 
command. 
Then only those partitions that cannot process the request or are not running 
on a z990 level processor or higher need to be individually reconfigured with 
the CONFIG command.
</IBM Documentation>

This seems to imply that I can configure a CHP offline for the CEC (or maybe 
for a CSS?) at the HMC and all of the attached LPARs will automatically take 
action. Sounds great! The only problem is, I can't figure out how to do it on 
my new z9BC HMC. Of course, it's always possible that I'm just thoroughly 
confused about what's being described in the book.

On the HMC, under "Operational Customization", I have "Configure Channel Path 
On/Off". When I drag the CEC to the icon, I get the following error:

"Object is not an acceptable type of object for the task"

I can drag "CPC Images" (or any group of Images) to the icon, and get a list of 
the LPARs in the group. The instructions in the dialog box say, "This task can 
only be performed with a single target object". Indeed, only one LPAR may be 
selected at a time.

So what am I missing? Where's the new functionality? How is a one-at-a-time, by 
LPAR, request from the HMC better than a one-at-a-time, by LPAR, CONFIG 
command? (How is it any better than RO *ALL,CF xxx across a sysplex?) Is there 
something I need to enable in my IODF, IOCDS, HMC, or SE to make the 
functionality worthwhile?

Any clarification will be very much appreciated.

--
Edward E Jaffe
Phoenix Software International, Inc
5200 W Century Blvd, Suite 800
Los Angeles, CA 90045
310-338-0400 x318
[EMAIL PROTECTED]
http://www.phoenixsoftware.com/

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