
Serial Over LAN
of serial data to and from network packets, and the transmission and reception of SOL network packets through the Ethernet controller sideband interface port.
11.2.2Architectural Components
11.2.2.1IPMC
As shown in the block diagram in Figure 27, the IPMI controller on the blade provides a UART interface to the blade’s serial port (COM1). This interface is used by the IPMC firmware to write data to the blade’s serial port or to receive the blade’s serial port data written by the BIOS or the operating system. The serial port can be connected to either the IPMI controller or to
The IPMC also provides a dedicated SMBus connection to the Ethernet controller, whose ports are connected to the base Ethernet interface.
The Keyboard Controller Style (KCS) interface is used for interaction between the IPMC firmware and software executing on the OS (for example, OpenIPMI or OpenHPI) by sending/receiving IPMI messages, and does not play a role during SOL communication. The KCS interface, however, can be used for
11.2.2.2Ethernet Controller
The Ethernet controller provides an advanced
The Ethernet controller is available with standby (management) power, so that it is possible to view the initial serial port data written by the BIOS or the OS.
11.3Theory of Operation
11.3.1Front Panel Serial Port or Rear Transition Module
By default, the serial console is connected to the serial port connector(s) on the front panel and rear transition module (if available).
If serial cables are connected to both the front panel and the rear transition module connectors, both connections will be active. However, only one user is allowed to use the serial session.
11.3.2Serial Over LAN
The IPMC firmware is
The IP address to be used by IPMC can be configured during initial setup of the blade in the system.
The IP address, once configured by the reference script provided, is stored in a non- volatile memory and is persistent across IPMC update and payload resets. The IP addresses are assigned to the IPMC independently of the host (OS) IP addresses and they need not match. The IP addresses used by the OS are not visible to the IPMC.
| Intel NetStructure® MPCBL0010 Single Board Computer |
October 2006 | Technical Product Specification |
Order Number: 304120 | 147 |