Mac Addresses For Integrated Ethernet Controllers - IBM PS703 Service Manual

The routing of an Ethernet controller to a particular I/O-module bay depends on the type of blade server.
You can verify which Ethernet controller is routed to which I/O-module bay by using the following test:
1. Install only one Ethernet switch module or pass-thru module in I/O-module bay 1.
2. Make sure that the ports on the switch module or pass-thru module are enabled. Click I/O Module
Tasks → Admin/Power/Restart in the management-module Web interface.
3. Enable only one of the Ethernet controllers on the blade server. Note the designation that the blade
server operating system has for the controller.
4. Ping an external computer on the network that is connected to the switch module or pass-thru
module. If you can ping the external computer, the Ethernet controller that you enabled is associated
with the switch module or pass-thru module in I/O-module bay 1. The other Ethernet controller in
the blade server is associated with the switch module or pass-thru module in I/O-module bay 2.
If you have installed an I/O expansion card in the blade server, communication from the expansion card
should be routed to I/O-module bays 3 and 4, if these bays are supported by your BladeCenter unit. You
can verify which controller on the card is routed to which I/O-module bay by performing the same test
and using a controller on the expansion card and a compatible switch module or pass-thru module in
I/O-module bay 3 or 4.

MAC addresses for integrated Ethernet controllers

The Ethernet controllers in the PS703 and PS704 blade servers provide the physical Ethernet ports that,
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 real physical ports.
The logical Ethernet ports connect directly to the integrated Ethernet controller and from there to the I/O
modules in the BladeCenter unit. See Locating the installation instructions for more information on
installing VIOS for the virtual Ethernet ports.
The PS703 blade server has two physical integrated Ethernet ports and the PS704 has four physical
integrated Ethernet ports.
The medium access control (MAC) addresses of the integrated Ethernet ports are listed on a label on the
blade server. The blade server label lists four MAC addresses:
v The first two indicate the BMC service processor built-in Ethernet ports.
v The next two indicate the two integrated Ethernet ports.
The MAC addresses of the integrated Ethernet ports are displayed in the BladeCenter Advanced
Management Module. The logical ports MAC addresses are generated by VIOS.
Table 40 shows the relative addressing scheme.
Table 40. MAC addressing scheme for physical and logical integrated Ethernet controllers
Node
BMC built-in Enet0
BMC built-in Enet1
Integrated Ethernet port 0
Integrated Ethernet port 1
Logical Ethernet ports
For more information about planning, deploying, and managing the use of integrated Ethernet
controllers, see the Configuring section of the PowerVM Information Roadmap.
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Power Systems: Problem Determination and Service Guide for the IBM PS703 (7891-73X) and PS704 (7891-74X)
Name in management
module
MAC address 1
MAC address 2
Relation to the MAC that
is listed on the PS703 and
PS704 label
Same as first MAC address
MAC + 1
MAC + 2
MAC + 3
Generated by VIOS
Example
00:1A:64:44:0e:c4
00:1A:64:44:0e:c5
00:1A:64:44:0e:c6
00:1A:64:44:0e:c7