Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Patent
1997-12-18
2000-11-21
Olms, Douglas W.
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
H04L 1266
Patent
active
061513164
ABSTRACT:
Management data is supplied to a management agent by a network switch by generating management packets having at least a portion of a received data packet, and management information specifying receive status and network switch response characteristics to the corresponding received data packet. The network switch includes a plurality of network ports, including network traffic ports and one management port for synthesizing the management frame. A network traffic port receiving a data packet generates receive status data specifying the reception status of the received data packet, including the presence of cyclic redundancy check (CRC) errors, frame alignment errors, and receive buffer overflow conditions. The received data packet and received status data are stored in a buffer memory, while switching logic generates port vectors specifying destination output ports and switching logic data specifying the switching logic response to the received data packet. The management port selectively compiles the received status data, the switching logic data, and at least a portion of the received data frame into a management frame, and outputs the synthesized management frame to a management agent according to a media access control (MAC) layer protocol. The generation of management frame provides detailed management information corresponding to characteristics of the received data packet and the corresponding network switch response, independent of the timing at which the data packet was received by the network switch.
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Crayford Ian
Kerstein Denise
Advanced Micro Devices , Inc.
Olms Douglas W.
Vincent David R
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