HP Integrity Virtual Machines Version 4.2 Release Notes

• 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 (10GbE)
• AD331A — Add-in
• AD332A — Add-in
• AD193A — Combo Add-in
• AD194A — Combo Add-in
• AD221A — Add-in
• AD222A — Add-in
• AD337A — Add-in
• AD338A — Add-in
• AD339A — Add-in
• AD385A — Add-in (10GbE)
• AD386A — Add-in (10GbE)
• NC360m — C-class Mezz card
• NC364m — C-class Mezz card
7.2.5 Calculating the Actual Utilization of the Virtual Network Card
The emulation of the virtual network I/O card is based on the Intel I8254X family. Thus, the
virtual network card (vNIC) is presented to the guest operating system as PCI-X 1000Base-T with
the speed of 1 Gb regardless of the physical network interface card backing the vswitch. This
emulation could lead to an incorrect calculation of vNIC performance by some network
performance applications on the guest. For example, on a Windows guests, the Task Manager
—> Network Performance display shows 1 Gb utilization. All calculations on the Windows
utilization are then based upon this value rather than the speed of the backing device on the VM
Host.
To accurately calculate vNIC performance, take into consideration the speed of the backing
device on the Integrity VM Host.
7.2.6 Using IP Alias Addresses in the Guest Not Supported for IPv4 or IPv6
Integrity VM Version 4.1 does not support the use of IP alias addressing in the guest for either
IPv4 or IPv6.
7.2.7 Sufficient Memory for Guests with Virtual LAN Devices
If the guest is configured with a number of virtual LAN devices and the guest does not have
sufficient memory, some of the devices could be missing after the guest is booted. To resolve
this issue, increase the size of guest memory with the hpvmmodify -r command.
For more information, see Section 4.2 (page 44).
7.2.8 Vswitches Are Always in SHARED Mode
The hpvmnet command displays the status of the vswitches, including the mode. The vswitches
are always in SHARED mode. No other modes are supported at this time.
70 Networking Information