Intel S1200SPL Technical Spesification page 67

Intel® Server Board S1200SP Family Technical Product Specification
The PHY on the RMM4 connects to the BMC's other RMII/RGMII interface (that is, the one that is not connected
to the baseboard NICs). This BMC port is configured for RGMII usage.
In addition to the use of the on-board dedicated RMM4 NIC for a dedicated management channel, on systems
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 purposes. When this is enabled, that
port is hidden from the OS. By default, this interface is disabled and must be configured via the BIOS, EWS, or
IPMI commands.
6.11.3.2.3 Concurrent Server Management Use of Multiple Ethernet Controllers
The BMC FW supports concurrent OOB LAN management sessions for the following combination:
2 on-board NIC ports
•
1 on-board NIC and the on-board dedicated RMM4 NIC
•
2 on-board NICs and the on-board dedicated RMM4 NIC
•
All NIC ports must be on different subnets for the concurrent usage models above.
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)
•
BMC LAN channel 1 MAC address = NIC1 MAC address + 2
•
BMC LAN channel 2 MAC address = NIC1 MAC address + 3
•
BMC LAN channel 3 (RMM4) MAC address = NIC1 MAC address + 4
•
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 settings:
IP Address: Static
•
All users disabled
•
IPMI-enabled network interfaces may not be placed on the same subnet. This includes the Intel
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:
BMC LAN1 (Baseboard NIC port) – 100Mb (10Mb in DC off state)
•
BMC LAN 2 (Baseboard NIC port) – 100Mb (10Mb in DC off state)
•
BMC LAN 3 (Dedicated NIC) – 1000Mb
•
Dedicated
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