On Wed, 3 Jan 2024 09:04:54 -0600, Alain Benvéniste <[email protected]> wrote: >I had a z/OS (10.1.106.201) under a z/VM(10.1.106.200) speaking to each other >through CTC, and it worked. >Now I want them to speak to each other through a unique OSA card as lpars. it >works but sporadically. >Each one can ping my PC(10.1.106.250).
It sounds like MAC address confusion of some sort, seen when two hosts have the same IP address or when the external routers are confused. If you have dynamic routing, make sure those configuration reflect the direct connections instead of routing override pointing to CTC. When it is misbehaving, you need to see what the routers are telling you about both systems. It feels like there's a static route stuck somewhere. "Sporadic" is the clue. For fun, try removing the "ETHERNET" keyword from the z/VM LINK statement. It's ok to mix IP and ETHERNET mode traffic on the same OSA, but it's possible there is some kind of issue with the MAC address that VM is using because of ETHERNET mode. (It gets a new MAC address from the OSA.) Alan Altmark IBM ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
