Intel S2600CP Family User Manual

Intel
®
Server Board S2600CP and Server System P4000CP TPS
Intel® Server Board S2600CP and Intel® Server System P4000CP Platform Management
Revision 1.1
Intel order number G26942-003
73
6.4.3.3 RMCP/ASF Messaging
The BMC supports RMCP ping discovery in which the BMC responds with a pong message to
an RMCP/ASF ping request. This is implemented per the Intelligent Platform Management
Interface Specification Second Generation, Version 2.0.
6.4.3.4 BMC LAN Channels
The BMC supports three RMII/RGMII ports that can be used for communicating with Ethernet
devices. Two ports are used for communication with the on-board NICs and one is used for
communication with an Ethernet PHY located on an optional add-in card (or equivalent on-board
circuitry).
6.4.3.4.1 Baseboard NICs
The specific Ethernet controller (NIC) used on a server is platform-specific but all baseboard
device options provide support for an NC-SI manageability interface. This provides a sideband
high-speed connection for manageability traffic to the BMC while still allowing for a
simultaneous host access to the OS if desired.
The Network Controller Sideband Interface (NC-SI) is a DMTF industry standard protocol for the
side band management LAN interface. This protocol provides a fast multi-drop interface for
management traffic.
The baseboard NIC(s) are connected to a single BMC RMII/RGMII port that is configured for
RMII operation. The NC-SI protocol is used for this connection and provides a 100 Mb/s full-
duplex multi-drop interface which allows multiple NICs to be connected to the BMC. The
physical layer is based upon RMII, however RMII is a point-to-point bus whereas NC-SI allows 1
master and up to 4 slaves. The logical layer (configuration commands) is incompatible with RMII.
Multi-port baseboard NICs on some products will provide support for a dedicated management
channel than can be configured to be hidden from the host and only used by the BMC. This
mode of operation is configured by a BIOS setup option.
6.4.3.4.2 Dedicated Management Channel
An additional LAN channel dedicated to BMC usage and not available to host SW is supported
by an optional add-in card. There is only a PHY device present on the add-in card. The BMC
has a built-in MAC module that uses the RGMII interface to link with the card’s PHY. Therefore,
for this dedicated management interface, the PHY and MAC are located in different devices.
The PHY on the card 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 an add-in card 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.
6.4.3.4.3 Concurrent Server Management Use of Multiple Ethernet Controllers
Provided the HW supports a management link between the BMC and a NIC port, the BMC FW
supports concurrent OOB LAN management sessions for the following combination:
 2 on-board NIC ports

Intel S2600CP Family Specifications

General

Brand	Intel
Model	S2600CP Family
Category	Server Board
Language	English