Quickest way to fix this would be to divide your 10.10.10 subnet in half - 25bit subnet mask - 255.255.255.128 . Use address 10.10.10.1 on cec 1 and 10.10.10.129 on cec 2. They really are separate lan segments you can't join them across something else.
Marcy Cortes "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." -----Original Message----- From: VM/ESA and z/VM Discussions [mailto:[EMAIL PROTECTED] On Behalf Of Bob Robinson Sent: Friday, January 13, 2006 11:44 AM To: VMESA-L@LISTSERV.UARK.EDU Subject: [VMESA-L] QDIO Guest LAN sharing the same subnet Greetings everyone, Scenario: 2 CEC's each with one z/VM 5.1 LPAR. Each z/VM LPAR has one TCPIP stack, MPROUTE, two OSA Express's and one QDIO guest LAN. The Guest LAN's are defined with the same subnet, let's say 10.10.10. CEC 1's Guest LAN gateway address is .1 (dot one) and CEC 2's is .2 (dot two) When TCPIP on CEC 1 is activated connectivity to the Guest LAN works fine. When TCPIP on CEC 2 is activated, I can connect to the stack, but not to the Guest LAN and connectivity to the Guest LAN on CEC 1 is gone. When I shut down CEC 2's TCPIP, connectivity returns to CEC 1's Guest LAN. Can someone explain why this does not work and which protocol or law I'm violating here? Note: I know VSWITCH is a better way to go and I'm looking into using it. TIA Bob Robinson Senior Technical consultant National City Corporation
