Jump to content United States-English
HP.com Home Products and Services Support and Drivers Solutions How to Buy
» Contact HP
More options
HP.com home
HP Integrity Virtual Machines Version 4.0 Release Notes > Chapter 7 Networking Information

MAC Address Validation Can Be Enhanced


Technical documentation

Complete book in PDF
» Feedback
Content starts here

 » Table of Contents

 » Index

When you add a virtual NIC to your guest, Integrity VM checks to make sure the MAC address is unique.

By default, Integrity VM makes three attempts (each with a one-second timeout) to determine the validity of the MAC address for the virtual NIC. This process can result in up to ten seconds of delay for each defined virtual NIC. To speed up this processing, add the following tunable to the /etc/rc.config.d/hpvmconf configuration file:


Where n is the number of attempts (1 to 30). The default is 3. A value of 1 or 2 increases performance at the risk of missing a response from a slow NIC.

You can set the HPVMMACADDRFRAMES tunable to zero (0), which completely eliminates the MAC address verification. However, HP recommends that you do so only after you configure all of your guests and confirm that there are no conflicts with MAC addresses in your network environment.

To boost virtual network performance, create additional vswitches and allocate them across guests.

Printable version
Privacy statement Using this site means you accept its terms Feedback to webmaster
© 2008 Hewlett-Packard Development Company, L.P.