HP Integrity Virtual Machines Installation, Configuration, and Administration Version A.03.50

• A9784A — Combo Add-in
• AB352 — Core
• AB545A — Networking Add-in
• A7011A — Networking Add-in
• A7012A — Networking Add-in
• AB290A — Combo Add-in
• AB287A — Add-in (10 GbE)
• AD331A — Add-in
• AD332A — Add-in
• AD193A — Combo Add-in
• AD194A — Combo Add-in
• AD221A — Add-in
• AD222A — Add-in
• AD299A — Add-in
• AD337A — Add-in
• AD338A — Add-in
• AD339A — Add-in
• AD385A — Add-in (10 GbE)
NOTE: In this release, AVIO is supported only on HP-UX 11iv2 guests.
8.5.3 Troubleshooting VLAN Problems
When VLANs are configured on the vswitch, the partitioned LAN must have its own set of
network servers to service requests on the VLAN. For example, the VLAN's DNS server or a
router setup on the VLAN should be set up on the VLAN. If guests start slowly or hang during
starting, determine whether the guest network interface is on a VLAN, and whether the
appropriate network services (like DNS) are set up and available on the VLAN. You might need
to either set up the appropriate services on the VLAN, or disable some of these network services
on the guest before booting up the guest on a VLAN.
When VLANs are configured on the vswitch and the guests are required to communicate over
a VLAN with a remote node outside the VM Host, you might need to set up the physical network
appropriately for the VLAN. For information about configuring VLANs on the switches, see the
product documentation for the physical network adapters.
If TCP/UDP applications have trouble communicating between a guest and the local VM Host
over a VLAN, it is possible that the host interface for the vswitch is checksum-offload capable.
To resolve the problem, identify the interface used by the vswitch and run the following command
on the VM Host, where 4 is the host interface as shown in the hpvmnet command output.
# lanadmin -X send_cko_off 4
Hardware TCP/UDP (IPv4) transmit checksum offload is currently disabled
8.5 Troubleshooting Network Problems 121