On Wednesday, 04/18/2007 at 03:19 ZE2, Shimon Lebowitz <[EMAIL PROTECTED]> 
wrote:
> Our VM system is still connected to the LAN
> via an ESCON attached 2216.
> 
> +----+
> |    |       10.0.0.6
> | VM |----[2216]--------(LAN....)
> |    | 10.1.5.1            10.0.x.x
> +----+
> 10.1.5.2
> 
> VM - 10.1.5.2
> 2216 VM side - 10.1.5.1
> 2216 LAN side - 10.0.0.6
> LAN - 10.0.x.x
> VM default gateway:
> DEFAULTNET   10.1.5.1        T2216     1500         0

A picture!  Yea!!!   No subnet masks!  Boooo!
(Though I infer that 10.0.x.x means mask 255.255.0.0.)

> I have an OSA and an IP address on the LAN
> available to me, 10.0.0.7 . I would like to add
> the DEVICE/LINK, HOME, and GATEWAY statements
> to put VM directly on the LAN as 10.0.0.7,
> but I do not want to cause any disruptions in
> current service.
> 
> If I use this GATEWAY statement:
> 10       =       OSA2LAN     1500         0.255.0.0  0
> I *think* this will use OSA2LAN for all traffic
> going to 10.0.x.x , right?

Yes.

> Will this cause problems when incoming traffic
> from that LAN arrived on the 10.1.5.2 network?

You don't say what the 2216 subnet is, so I can't say.  (Did I mention the 
lack of subnet masks?)  If you just have a host route, then respones to 
traffic coming from the 2216 may go out through the OSA.

Alan Altmark
z/VM Development
IBM Endicott

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