From google found this related article : On Thursday, 08/26/2010 at 05:06 EDT, Dieltiens Geert
<[email protected]> wrote:
I'm looking into the TN3270E server of TCP/IP for z/VM 5.4 as a replacement for a Cisco CIP/CPA TN3270E server. I have briefly tested the VM TN3270E server, and it seems to works fine. Using the Cisco based TN3270E server, our end-users get a VTAM SNA-session with an USSTAB menu, giving them access to our multidomain VTAM-network and all its applications running in several VM and VSE systems. I can do the same using the TN3270E server in VM: I can connect a TN3270E session to VM/VTAM using the DIAL VTAM command (manually, or from SCEXIT) which creates a Non-SNA-session on which I can show an USSTAB menu. This does require a DEFINE GRAF xxxx 3270 for every session that DIALs to VTAM. I tried that and it works, but can I use this DIAL-method for several thousands of TN3270E sessions? Is there a limit to the number of sessions? Or are there better ways for coupling a lot of VM/TN3270E sessions to VM/VTAM?
*DIAL is the only way to connect native VM TN3270E sessions to VTAM, whether you DIAL VTAM, DIAL PVM, or DIAL some other VTAM-enabled guest.* If you DIAL VTAM, the limit on the number of sessions is based solely on the number of GRAFs you have defined and the number of the LOCAL LUs you have defined to VTAM. Having thousands of LOCAL LUs defined shouldn't particularly bother VTAM, but you may need to adjust virtual and common storage sizes. Or you may need multiple VTAMs and split things up. (Hey, if it's an odd IP address DIAL VTAM1. If even, dial VTAM2.) Alan Altmark z/VM Development IBM Endicott On 19/10/10 8:12 PM, Frank M. Ramaekers wrote:
Can't you connect to your z/VSE CICS's via VTAM CDRM CDRSC instead of using a CUU for each session? Frank M. Ramaekers Jr. -----Original Message----- From: The IBM z/VM Operating System [mailto:[email protected]] On Behalf Of Franz Josef Pohlen Sent: Monday, October 18, 2010 11:43 PM To: [email protected] Subject: how to change the name of VTAM-NSS Hi listers, my customer uses VM-TN3270E, SCEXIT and Dial to VM-VTAM to connect to his CICS-TS in zVSE. Now he is going to reach the 4096 devices limit in his vm-vtam, because the Non-SNA resources support only 3-digit device numbers. We want to create a 2nd GCS and VTAM with its own segments to avoid any storage complaints. I know how to build a new GCS, but how can I build a new VTAM NSS VTAM2 instead of VTAM.
