On Tuesday, 04/04/2006 at 01:50 AST, "Levy, Alan" <[EMAIL PROTECTED]> wrote: > We found out this week that sometime in the past year, one of the cables > to the FB osa became unplugged (there are no other servers connected to > that switch). > > Our network group actively checks the LAYER-2 (MAC) addresses display on > the Cisco switches where the OSA connections are plugged. They only see > the MAC address of the primary interface on the VSWITCH. The backup > VSWITCH port does not show a MAC address on the Cisco switch. They > would like to actively monitor both interfaces so that if a real problem > occurs on the backup interface, it can be detected PRIOR to a VSWITCH > failover. Since they currently can't monitor those connections they > never noticed it had a problem. Then when we really needed the backup > it wasn't there and we experienced an outage. > > Is there a way to have both the primary and backup OSA interfaces show a > MAC address on the Cisco switches?
It won't show the MAC address unless the MAC address has been transmitted, but no traffic flows from the backup. Perhaps they should monitor port status rather than MACs? And if you move to Layer 2 on the VSWITCH (TYPE ETHERNET) you will find that the guest's MAC appears rather than the burned-in OSA MAC. Also, in z/VM 5.1 (or was it 5.2? I forget...) we initialize the backup OSAs when you activate the VSWITCH and will detect the "unplug" event on the backups and issue messages. In earlier releases we didn't initialize or watch the backup OSAs unless the primary failed. Alan Altmark z/VM Development IBM Endicott ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
