HP Integrity Virtual Machines 4.3: Installation, Configuration, Administration

NOTE: The lanadmin command is deprecated and will be removed in a future HP-UX release.
HP recommends that you use the nwmgr command to perform all network interface-related
tasks.
The following table shows the nwmgr command that performs the same task as the lanadmin
command:
nwmgr Command
Legacy CommandTask
# nwmgr -g -A all -c lan4 |
grep Checksum
Transmit Checksum Offload=Off
Receive Checksum Offload=On
# lanadmin -x cko 4
Hardware TCP/UDP (IPv4)
transmit checksum offload
is currently enabled.
Hardware TCP/UDP (IPv4)
receive checksum offload is
currently disabled.
Check the status of the transmit CKO.
In this example, the VLANs are configured over the vswitch vmlan4. This vswitch is created on
PPA 4 on the VM Host.
The following table shows the nwmgr command that performs the task as the lanadmin
command:
nwmgr Command
Legacy CommandTask
# nwmgr -s -A tx_cko=off -c
4
lan2 current values:
Transmit Checksum Offload=Off
# lanadmin -X send_cko_off
4
Hardware TCP/UDP (IPv4)
transmit checksum offload
is currently disabled.
Turn off CKO on PPA 4 by entering
this command on the VM Host.
7.5.3 Troubleshooting VLAN-Backed vswitches
To enable the VLAN-backed vswitch (VBVsw) feature, PHNE_40215 or a superseding patch is
required to be installed on the VM Host. This patch is available as an individual patch or as part
of "FEATURE11i" bundle. To verify that the patch is installed, enter the following:
# swlist -l product | grep PHNE_40215
PHNE_40215 1.0 LAN cumulative patch
The dlpi_max_ub_promisc kernel tunable needs to be set to when using a VBVsw type vswitch.
Otherwise, attempting to boot the vswitch fails with the following error message from the
hpvmnet command:
# hpvmnet -b -S vs5000
hpvmnetd: setup_downlink: promisc failed, recv_ack:
promisc_phys: UNIX error - Device busy, errno 5
To set the kernel tunable, enter the following:
# kctune dlpi_max_ub_promisc=
7.6 Other Issues and Notes
The following list provides networking information with the Integrity VM V4.3 release of which
you should be aware :
• If you modify the MAC address of an interface in the guest, the hpvmstatus command
in the VM Host does not display the current MAC address correctly. There is no fix or
workaround for this problem at this time.
• Just as with physical devices on a network, for communication to occur uninterrupted
between all stations on a LAN segment, the MTUs of all the systems on the LAN segment
7.6 Other Issues and Notes 141