Information Update 23
Creating a New Network Adapter Team Using the Procfg Application
An issue exists if the
procfg
application is used to create a new network adapter team. If both
network adapters are added to the team, the
procfg
application switches the MAC addresses of the
two adapters making the team unusable by the operating system. The affected driver revisions are
listed below.
• Procfg 2.2.19
• E1000 5.3.19-1
• Ians 3.4.2a-2.4.21_4.EL
Future releases of these drivers will not be affected.
Two workarounds exist until the new drivers are available:
• Add one network adapter to the team, save the team information, and then add the second
adapter.
• Modify the
/etc/procfg/
team name
file, where
team name
is the name of the new network
adapter team, and correct the MAC addresses.
Determining the Primary and Secondary Network Adapters
During a Microsoft Windows 2000 or Windows Server 2003 operating system installation, the
operating system enumerates physical network adapters, but may list them in random order. This
can cause confusion when setting up and testing a network adapter team for failover/failback. This
may also cause misunderstandings as to which cable is the primary or the secondary network
adapter team member and cause unexpected team behavior when a cable is disconnected or
connectivity is interrupted.
To help determine the identities of physical network adapters, right-click and rename the adapters
in
Network Connections
in the Control Panel, use the
ipconfig /all
command to note the IP-to-
MAC address assignments of the adapters, and then use the IP addresses to locate the adapters in
Network Connections
.
For a system with integrated network adapters, LOM1 has the lowest MAC address. The link status
indicators can also be used to externally identify the adapters to the system. Additionally, an
integrated network adapter’s MAC address is listed in the System Setup program.
NOTE:Occasionally during an operating system installation, the network adapters may be incorrectly
assigned and cause IP address conflict messages to appear during boot. If this occurs, use the
procedures listed above to correctly assign the network adapters.
R9289bk1.book Page 23 Friday, February 18, 2005 1:30 PM