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Physical interfaces to the BMC include SMBuses, an RS-232 serial console, address and data lines and an IPMB, that enables the BMC to accept IPMI request messages from other management controllers in the system. A direct serial connection to the BMC is not encrypted as the connection itself is secure. Connection to the BMC over LAN may or may ...
Optomux – Serial (RS-422/485) network protocol originally developed by Opto 22 in 1982. The protocol was openly documented [1] and over time used for industrial automation applications. PieP – An Open Fieldbus Protocol; Profibus – by PROFIBUS & PROFINET International (PI) PROFINET - by PROFIBUS & PROFINET International (PI)
Management Component Transport Protocol (MCTP) is a protocol designed by the Distributed Management Task Force (DMTF) to support communications between different intelligent hardware components that make up a platform management subsystem, providing monitoring and control functions inside a managed computer system.
NC-SI, abbreviated from network controller sideband interface, is an electrical interface and protocol defined by the Distributed Management Task Force (DMTF). The NC-SI enables the connection of a baseboard management controller (BMC) to one or more network interface controllers (NICs) in a server computer system for the purpose of enabling out-of-band system management.
Both in-band and out-of-band management are usually done through a network connection, but an out-of-band management card can use a physically separated network connector if preferred. A remote management card usually has at least a partially independent power supply and can switch the main machine on and off through the network.
The OpenBMC project is a Linux Foundation collaborative open-source project that produces an open source implementation of the baseboard management controllers (BMC) firmware stack. [ 1 ] [ 2 ] [ 3 ] OpenBMC is a Linux distribution for BMCs meant to work across heterogeneous systems that include enterprise, high-performance computing (HPC ...
The Broadcast/Multicast control (BMC) is a sublayer of layer 2 protocol of Radio Interface Protocol Architecture as per BMC-STD. It exists in the user plane only. It exists in the user plane only. It is located above the Radio Link Control (RLC), a layer 2 responsible for mapping logical channels.
As an example, assume the case of Wake-on-LAN. Traditionally, the OS controls Wake-on-LAN and must call third-party device drivers to enable support on a network card. With the HECI bus, the host is able to assert its request line (REQ#), the ME will assert its grant line (GNT#), and the host can send its message using its serial transmit signal.