I suspect it's actually running in Layer3 mode. Usually when we have
Layer2 on our z/VM 5.4 the query would reverse the order of the IP and MAC
display:
Layer2 display:
Unicast MAC Addresses:
02-06-00-FF-FF-F1 IP: 192.168.70.105
Layer3 display:
Unicast IP Addresses:
192.168.70.105 MAC: 02-06-00-00-00-50
query lan will tell you for sure if the vswitch is using layer2 or layer3.
If it says ETHERNET it's layer2. If it says NONROUTER or PRIROUTER it's
layer3.
Anyway, I recall a case where some lan issues caused our OSA card to go
nuts and we actually had to log all guests off / on again to get the
vswitch connections to reset. But in your case it is working for some
guests so feels more like a routing, firewall issue, or duplicate IP. I'd
shutdown the firewall and see if you can ping something outside of z/VM
but still on the local lan (like the default gateway or something). If
you still can't ping anything on the local lan, try halting and logging
the guest off. While the guest is down try to ping it's address from
outside the box and see if maybe something else is getting the packets. If
that doesn't yield any answers bring the guest back up and see if it reset
anything to make things work (logging all guests that use the vswitch off
and on again also sometimes resets something).
Other than that, recheck config files, or maybe contact IBM to get some
traces done? SLES-8 is pretty old so not sure how much support will be
available.
- Mark Ver
office: Building 710 / Room 2-RF-10
phone: (845) 435-7794 [tie 8 295-7794]
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