Mac Addresses For Integrated Ethernet Controllers - IBM Flex System p260 Installation And Service Manual

MAC addresses for integrated Ethernet controllers

Two integrated Ethernet ports are used by the service processor on the IBM Flex System p260 Compute
Node or IBM Flex System p460 Compute Node. Additional Ethernet ports are provided by the feature
cards plugged into the two expansion cards slots. These expansion card Ethernet ports, when used with a
Virtual I/O Server (VIOS), provide virtual logical Ethernet to client logical partitions (LPARs). The VIOS
software uses the logical Ethernet as if they were actual physical ports.
About this task
The Media Access Control (MAC) addresses of the integrated Ethernet ports are listed on a label on the
compute node. The compute node label lists two MAC addresses. The MAC addresses of the integrated
Ethernet ports are displayed in the Chassis Manager in the management software web interface of the
IBM Flex System Manager and in the Hardware Management Console (HMC), and in the Integrated
Virtualization Manager (IVM). The MAC addresses of the logical ports are generated by VIOS.
To view the MAC addresses of the Ethernet ports by using HMC, click HMC Management > Change
Network Settings > LAN Adapters.
To view the MAC addresses of the Ethernet ports by using IVM, click View/Modify TCP/IP Settings >
Properties > Connected Partitions.
Table 5 shows the relative addressing scheme.
Table 5. MAC addressing scheme for physical and logical integrated Ethernet controllers
Node
Service processor built-in
Enet0
Service processor built-in
Enet1
Logical Ethernet ports
1. The Integrated Virtualization Manager (IVM), see Updating the Integrated Virtualization Manager.
For more information about planning, deploying, and managing the use of integrated Ethernet
controllers, see the Configuring section of the PowerVM Information Roadmap.
Name in management
module
Relationship to the MAC
that is listed on the IBM
Flex System p260 Compute
Node or IBM Flex System
p460 Compute Node label
Same as first MAC address
MAC + 1
Generated by VIOS
Chapter 3. Configuring the compute node
Example
00:1A:64:44:0e:c4
00:1A:64:44:0e:c5
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