 Method and apparatus for synchronized message passing using shared resources |
| In accordance with principles of the present invention, to facilitate communication between a first ... |
|
| Method and apparatus for network interface card load balancing and port aggregation |
| Broadly speaking, the present invention fills these needs by providing methods and apparatus for ... |
|
| Asynchronous transfer mode based service consolidation switch |
| From the foregoing, a need has arisen for a telecommunications switch that integrates a variety of ... |
|
| High-speed data bus for network switching |
| The specification will be organized as follows: 1. BlazePath.TM./BlazeFire.TM. Architecture/Chip S... |
|
| Method and apparatus for data buffer management in a communications switch |
| OF A PREFERRED EMBODIMENT OF THE INVENTION Generally, the present invention provides a method and ... |
|
| Handling contiguous memory references in a multi-queue system |
| What is claimed is: 1. A controller for a random access memory comprises: control logic, including ... |
|
| Communication between processors |
| Referring to FIG. 1, a computer system 26 includes two processors 1, 2. Each processor 1, 2 has a ... |
|
|
Computer with remote wake up and transmission of a status packet when the computer fails a self test
| Details |
Inventors: Klein, Philippe; Ben-Michael, Simoni; Menachem, Avraham; Shvimmer, Sarit;
Assignee: Digital Equipment Corporation (Maynard, MA)
Primary Examiner: Sheikh; Ayaz R.
Assistant Examiner: Wiley; David
Attorney, Agent or Firm: Cesari and McKenna, LLP
An apparatus for use in a computer has a network interface subsystem having power applied thereto when power is removed from other components of the computer. A receiver in the network interface subsystem receives a packet directed to the computer from the network, and in response to receipt of a selected packet, restores power to the other components of the computer. Upon restoration of power to the other components of the computer, a signalling device reports status of at least one of the other components of the computer to the network interface subsystem. A transmitter in the network interface subsystem sends, in response to the signalling device, a status packet onto the network giving a status of the computer in the event that a component is not functional, following restoration of power to the other components of the computer. The computer has a processor which executes a self test upon restoration of power to the processor, and a self test signalling device to signal to the network interface subsystem the results of the self test, to initiate transmission of a status packet by the network interface onto the network in the event that the computer fails the self test. The signalling device may be a management bus, and the management bus may operate under the I2C protocol. The receiver uses imperfect filtering to identify a wake up packet, and also may use a mask in performing imperfect filtering. |
|
DETAILED DESCRIPTION The failure of a component of a computer upon the awakening of the computer is brought to the attention of proper authorities by transmitting a status packet onto a network.
An apparatus for use in a computer has a network interface subsystem having power applied thereto when power is removed from other components of the computer.
A receiver in the network interface subsystem receives a packet directed to the computer from the network, and in response to receipt of a selected packet, restores power to the other components of the computer.
Upon restoration of power to the other components of the computer, a signaling device reports status of at least one of the other components of the computer to the network interface subsystem.
A transmitter in the network interface subsystem sends, in response to the signaling device, a status packet onto the network giving a status of the computer in the event that a component is not functional, following restoration of power to the other components of the computer.
The computer has a processor which executes a self test upon restoration of power to the processor, and a self test signaling device to signal to the network interface subsystem the results of the self test, to initiate transmission of a status packet by the network interface onto the network in the event that the computer fails the self test.
The signaling device may be a management bus, and the management bus may operate under the I2C protocol.
The receiver uses imperfect filtering to identify a wake up packet, and also may use a mask in performing imperfect filtering.
Other and further aspects of the present invention will become apparent during the course of the following description and by reference to the accompanying drawings.
|
|
File Sharing 
