Intel S2600CO Family Technical Product Specification page 76

Intel® Server Board S2600CO Family TPS
In addition to the use of an RMM4 add-in card for a dedicated management channel, on system
that support multiple Ethernet ports on the baseboard, the system BIOS provides a setup option
to allow one of these baseboard ports to be dedicated to the BMC for manageability purpose.
When this is enabled, that port is hidden from the OS.
6.10.3.2.3 Concurrent Server Management Use of Multiple Ethernet Controllers
The BMC FW supports concurrent OOB LAN management sessions for the following
combination:
Two on-board NIC ports

One on-board NIC ports and the optional dedicated RMM4 add-in management NIC

Two on-board NIC ports and the optional dedicated RMM4 add-in management NIC

All NIC ports must be on different subnets for the above concurrent usage models.
MAC addresses are assigned for management NICs from a pool of up to 3 MAC addresses
allocated specifically for manageability.
The server board has seven MAC addresses programmed at the factory. MAC addresses are
assigned as follows:
NIC 1 MAC address (for OS usage)

NIC 2 MAC address = NIC 1 MAC address + 1 (for OS usage)

NIC 3 MAC address = NIC 1 MAC address + 2 (for OS usage)

NIC 4 MAC address = NIC 1 MAC address + 3 (for OS usage)

BMC LAN channel 1 MAC address = NIC1 MAC address + 4

BMC LAN channel 2 MAC address = NIC1 MAC address + 5

BMC LAN channel 3 (RMM) MAC address = NIC1 MAC address + 6

The printed MAC address on the server board and/or server system is assigned to NIC1 on the
server board.
For security reasons, embedded LAN channels have the following default setting:
IP Address: Static

All users disabled

IPMI-enabled network interfaces may not be placed on the same subnet. This includes the
®
Intel Dedicated Server Management NIC and either of the BMC's embedded network
interfaces.
Host-BMC communication over the same physical LAN connection =also known as "loopback" –
is not supported. This includes "ping" operations.
On server boards with more than two onboard NIC ports, only the first two ports can be used as
BMC LAN channels. The remaining ports have no BMC connectivity.
Maximum bandwidth supported by BMC LAN channels are as follows:
Revision 1.0
Intel order number G42278-002
Platform Management Functional Overview
65