Kontron AT8060 - Manual (Page 46)

31 AT8060
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The User ID3 to User ID5 are configurable. By default they are not set to “Enable”.
4.3.7 Logout
This button allows a safe logout of the management interface.
An automatic logout will be done after 5 minutes of inactivity.
4.4 Hardware Management Functionality
The Front Blade Unit supports an “intelligent” hardware management system, based on the Intelligent
Platform Management Interface Specification. The hardware management system of the Front Blade Unit
provides the ability to manage the power and interconnect needs of intelligent devices, to monitor events,
and to log events to a central repository.
4.5 IPMC Specific Features
4.5.0.1 IPMC - Interface
The principal management-oriented link within a Shelf is a two-way redundant implementation of the
Intelligent Platform Management Bus (IPMB). IPMB is based on the inter-integrated circuit (I2C) bus and is
part of the IPMI architecture. In AdvancedTCA Shelves, the main IPMB is called IPMB-0. Each entity attached
to IPMB-0 does so through an IPM Controller, the distributed management controller of the IPMI
architecture. Shelf Managers attach to IPMB-0 through a variant IPM Controller called the Shelf Management
Controller (ShMC). AdvancedTCA IPM Controllers, besides supporting dual redundant IPMBs, also have
responsibility for detecting and recovering from IPMB faults.
The reliability of the AdvancedTCA IPMB-0 is increased by using two IPMBs, with the two IPMBs referenced as
IPMB-A and IPMB-B. The aggregation of the two IPMBs is IPMB-0. The IPM Controllers aggregate the
information received on both IPMBs. An IPM Controller that has a message ready for transmit uses the IPMBs
in a round robin fashion. An IPM Controller tries to alternate the transmission of messages between IPMB-A
and IPMB-B.
If an IPM Controller is unable to transmit on the desired IPMB then it tries to send the message on the
alternate IPMB. By using this approach, an IPMB can become unavailable and then available without the IPM
Controller needing to take specific action.
4.5.0.2 IPMC - System Manager Interface
The Section 24 of [IPMI 2.0] describes how IPMI messages can be sent to and from the IPMC encapsulated in
RMCP (Remote Management Control Protocol) packets datagrams. This capability is also referred to as “IPMI
over LAN” (IOL). IPMI also defines the associated LAN-specific configuration interfaces for setting things
such as IP addresses and other options, as well as commands for discovering IPMI-based systems. The
Distributed Management Task Force (DMTF) specifies the RMCP format. This LAN communication path makes
the Front Blade Unit reachable to the System Manager for any management action (IPMC firmware upgrade,
query of all FRU Data, CPU reset etc.) without the need to go through the ShMC.