Re: VCTC vs VSWITCH

2007-12-08 Thread David Boyes
VCTCA SNA protocol requires VTAM for POWER PNETTING. Is VTAM more efficient than TCP/IP? You only need VTAM if you are using SNA links. If you define the CTCs as point-to-point BCTC, then VTAM is not needed.

Re: VCTC vs VSWITCH

2007-12-08 Thread David Boyes
ating System [mailto:[EMAIL PROTECTED] On Behalf Of Huegel, Thomas Sent: Friday, December 07, 2007 12:25 PM To: IBMVM@LISTSERV.UARK.EDU Subject: VCTC vs VSWITCH I have several VSE under z/VM and PNET files around the VSE's. I was just wondering what others think is the best way to do this. Vir

Re: VCTC vs VSWITCH

2007-12-07 Thread Alan Altmark
On Friday, 12/07/2007 at 12:56 EST, "Huegel, Thomas" <[EMAIL PROTECTED]> wrote: > VCTCA SNA protocol requires VTAM for POWER PNETTING. Is VTAM more efficient > than TCP/IP? Why use SNA at all? Use non-SNA CTCs and define the node to POWER, then specify the vaddr of the VCTC on the PSTART. Al

Re: VCTC vs VSWITCH

2007-12-07 Thread Edward M. Martin
VTAM can send more data per buffer. And has pacing and vpacing for buffer controls. TCP/IP was made to connect and communicate but not always at a very large rate. Ed Martin 330-588-4723 ext 40441

Re: VCTC vs VSWITCH

2007-12-07 Thread Huegel, Thomas
VCTCA SNA protocol requires VTAM for POWER PNETTING. Is VTAM more efficient than TCP/IP? -Original Message- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] Behalf Of Tom Duerbusch Sent: Friday, December 07, 2007 11:48 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: VCTC vs

Re: VCTC vs VSWITCH

2007-12-07 Thread Alan Altmark
On Friday, 12/07/2007 at 12:25 EST, "Huegel, Thomas" <[EMAIL PROTECTED]> wrote: > I have several VSE under z/VM and PNET files around the VSE's. > I was just wondering what others think is the best way to do this. Virtual > CTC's or TCP/IP using a VSWITCH. > Any opinions? > > Would my TCP/I

Re: VCTC vs VSWITCH

2007-12-07 Thread Tom Duerbusch
If you can work with VCTCA, then that is the way to go. Biggest reason, lower overhead. You are communicating over "hardware". With the IP method, you have multiple IP stacks that you have to drive with your 390 processor(s). Tom Duerbusch THD Consulting Law of Cat Sleeping All cats must sl

VCTC vs VSWITCH

2007-12-07 Thread Huegel, Thomas
I have several VSE under z/VM and PNET files around the VSE's. I was just wondering what others think is the best way to do this. Virtual CTC's or TCP/IP using a VSWITCH. Any opinions? Would my TCP/IP PNETTING ever hit a 'real' wire?