Technical Product Specification

Platform Management Overview Intel® Server Board S2600IP and Intel® Workstation Board W2600CR TPS
70 Intel order number G34153-004 Revision 1.4
Note: Cipher suite 0 defaults to callback privilege for security purposes. This may be changed by any
administrator.
For user authentication, the BMC can be configured with “null” user names, whereby
password/key lookup is done based on “privilege level only”, or with non-null user names, where
the key lookup for the session is determined by user name.
IPMI 2.0 messaging introduces payload types and payload IDs to allow data types other than
IPMI commands to be transferred. IPMI 2.0 serial-over-LAN is implemented as a payload type.
Table 26. Supported RMCP+ Payload Types
Payload Type
Feature
IANA
00h
IPMI message
N/A
01h
Serial-over-LAN
N/A
02h
OEM explicit
Intel (343)
10h – 15h
Session setup
N/A
4.5.3.3 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 v2.0.
4.5.3.4 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).
4.5.3.4.1 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.