摘要:
A method for implementing packet en-queuing and de-queuing processes in a network switch is provided. The method comprises the following steps. First, an en-queuing process and a de-queuing process are divided into a plurality of en-queuing and de-queuing stages. The en-queuing process of a plurality of en-queued packets is then processed with each of the plurality of en-queued packets processed in one of the plurality of en-queuing stages simultaneously, and every one of the plurality of en-queued packets passes through all of the plurality of en-queuing stages sequentially to complete the en-queuing process. The de-queuing process of a plurality of de-queued packets is then processed with each of the plurality of de-queued packets processed in one of the plurality of de-queuing stages simultaneously, and every one of the plurality of de-queued packets passes through all of the plurality of de-queuing stages sequentially to complete the de-queuing process.
摘要:
A control system for packet transmission. A forward control unit receives a packet providing a port count through an input port and implements a lookup operation. A queue control unit determines whether the port count is greater than a first predetermined value, and, if not, outputs the packet through a first port, and, if so, sends a first message. A multicast forward control unit receives the first message, adds one to a first packet count, determines whether the first packet count is greater than a threshold value, and, if so, sends a stop forward message to the forward control unit but does not send a grant message. The forward control unit receives the stop forward message and does not transmit subsequent packets to the first port but to a second port directly.
摘要:
A method for implementing varying service quality grades in a network switch is provided, comprises the steps of: classifying a plurality of users of the network switch into a plurality of service quality grades according to a contributing factor of the plurality of the users; connecting each of the plurality of users to the network switch via one of a plurality of ports of the network switch according to its service quality grade; determining an original priority of a packet in the network switch; and determining an adjusted priority of the packet according to both the original priority of the packet and a priority adjustment table of an ingress port of the packet. Each of the plurality of ports has a corresponding priority adjustment table, and each of the priority adjustment tables includes a mapping relationship between the original priority and the adjusted priority.
摘要:
The invention provides a method for implementing varying service quality grades in a network switch. First, a plurality of users of the network switch is classified into a plurality of service quality grades according to a contributing factor of the plurality of the users. Each of the plurality of users is then connected to the network switch via one of a plurality of ports of the network switch according to its service quality grade. An original priority of a packet in the network switch is then determined. An adjusted priority of the packet is then determined according to both the original priority of the packet and a priority adjustment table of an ingress port of the packet. Each of the plurality of ports has a corresponding priority adjustment table, and each of the priority adjustment tables includes a mapping relationship between the original priority and the adjusted priority.
摘要:
A multi-beam interferometer displacement measuring system has a light source module, a resonator module and a detecting device. The light source module has an emitter and a polaroid sheet. The emitter emits a non-polarizing beam. The polaroid sheet receives and transforms the non-polarizing beam into a polarizing beam. The resonator module receives the polarizing beam and has a coated glass panel, a corner cube prism and a wave-delay plate. The coated glass panel receives and reflects the polarizing beam. The corner cube prism receives and reflects the polarizing beam to the coated glass panel to form a resonant cavity. The wave-delay plate is mounted between the coated glass panel and the corner cube prism to receive the polarizing beam. The detecting device faces the coated glass panel to receive the interferential stripes formed in the resonator module and has a polarizing beam splitter, two power detectors and a signal processor.