HP Integrity Virtual Machines 4.2.5: Release Notes

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.
7.2.21 Do Not Turn on TSO on the VM Host and on HP-UX Guests When Using VIO
TCP Segmentation Offload (TSO) is turned off by default in HP-UX. HP recommends that you leave
it turned off on both the VM Host system and on HP-UX guests if you are using the VIO interface.
This applies to both the virtual network interface cards in the guest and any physical network
interface cards in the VM Host that are used by vswitches. When TSO is enabled, guest networks
are interrupted.
Note that this restriction applies to VIO interfaces.
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 comparable nwmgr command to use to replace the lanadmin
command:
nwmgr CommandLegacy CommandTask
# nwmgr -g -A vmtu -c lann# lanadmin -x vmtu n
Verify whether TSO is turned on. n is
the VM Host interface, as displayed
by the hpvmnet command.
# nwmgr -g -A vmtu -c lan0
lan0 current values:
Virtual MTU = 32160
TCP Segmentation Offload
is now disabled.
# lanadmin -x vmtu 0
Driver/Hardware supports TCP
Segmentation Offload,
Current VMTU = 32160
Verify that TSO is on for lan0.
76 Networking Information