Intel S1200BTL Product Specification - Page 56

Role of Integrated BMC in NM - specification

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Platform Management Intel®Server Board S1200BT TPS Task Capabilities & Features and Thermal Policy Limit power upon power excursion (OS operational) Reduce power upon temperature excursion Limit power even when OS is not operational (OS failure) 2.0   Avoid Triggering HW Protection Reduce power consumption to prevent tripping DC circuit breaker  Power supply optimization technologies (SmaRT & CLST) used to limit power consumption to reduce demand on power supplies in specific scenarios. IPMI-based commands over SMBus (monitoring, control & alert)  Interfaces PECI Proxy and Pass-Through (this feature is also available on the ME Si-Enabling firmware)  Power telemetry from Integrated BMC or from PMBus-compliant power supplies  Note: EPSD systems have ME get power data directly from power supplies 4.4.3 Role of Integrated BMC in NM This section summarizes the Integrated BMC role in the NM feature implementation. 4.4.3.1 External Communications Link The Integrated BMC provides the access point for remote commands from external management software and generates alerts to that software. The ME plays the role of an IPMI satellite controller that communicates to the Integrated BMC over a secondary IPMB. There are mechanisms to forward commands to ME and send response back to originator. Similarly events generated by ME to the Integrated BMC (via IPMB) have to be sent by the Integrated BMC to the external software over the LAN link. It is the responsibility of Integrated BMC to implement these mechanisms for communication with Node Manager (NM). 4.4.3.1.1 Command Passing Via Integrated BMC External software wishing to communicate with the NM will send ‗bridged' IPMI commands to Integrated BMC. This will be in the form an IPMI packet encapsulated in another packet, following standard IPMI bridging as described in the IPMI 2.0 Specification. Integrated BMC forwards the encapsulated command it to NM engine on the ME and returns the response to the sender. Due to the fact that some of the NM commands have potential for performance limiting and system shut-down, the Integrated BMC firmware enforce an administrator privilege for any commands bridged to the ME. 4.4.3.1.2 Alerting Alerts may be sent from the NM in the ME to the external software by one of two different methods depending on the nature of the alert. 44 Revision 1.0 Intel order number G13326-003

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Platform Management
Intel®
Server Board S1200BT TPS
Revision 1.0
Intel order number G13326-003
44
Task
Capabilities & Features
2.0
and Thermal Policy
Limit power upon power excursion (OS operational)
Reduce power upon temperature excursion
Limit power even when OS is not operational (OS failure)
Avoid Triggering
HW Protection
Reduce power consumption to prevent tripping DC circuit breaker
Power supply optimization technologies (SmaRT & CLST) used to
limit power consumption to reduce demand on power supplies in
specific scenarios.
Interfaces
IPMI-based commands over SMBus (monitoring, control & alert)
PECI Proxy and Pass-Through (this feature is also available on the
ME Si-Enabling firmware)
Power telemetry from Integrated BMC or from PMBus-compliant
power supplies
Note:
EPSD systems have ME get power data directly from power
supplies
4.4.3
Role of Integrated BMC in NM
This section summarizes the Integrated BMC role in the NM feature implementation.
4.4.3.1
External Communications Link
The Integrated BMC provides the access point for remote commands from external
management software and generates alerts to that software.
The ME plays the role of an IPMI
satellite controller that communicates to the Integrated BMC over a secondary IPMB. There are
mechanisms to forward commands to ME and send response back to originator. Similarly
events generated by ME to the Integrated BMC (via IPMB) have to be sent by the Integrated
BMC to the external software over the LAN link. It is the responsibility of Integrated BMC to
implement these mechanisms for communication with Node Manager (NM).
4.4.3.1.1
Command Passing Via Integrated BMC
External software
wishing to communicate with the NM will send ‗bridged‘ IPMI commands to
Integrated BMC. This will be in the form an IPMI packet encapsulated in another packet,
following standard IPMI bridging as described in the
IPMI 2.0 Specification
. Integrated BMC
forwards the encapsulated command it to NM engine on the ME and returns the response to
the sender.
Due to the fact that some of the NM commands have potential for performance limiting and
system shut-down, the Integrated BMC firmware enforce an administrator privilege for any
commands bridged to the ME.
4.4.3.1.2
Alerting
Alerts may be sent from the NM in the ME to the external software by one of two different
methods depending on the nature of the alert.