Dual speed hub, and the related redundant switching method
First Claim
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1. A dual speed hub comprising:
- a CPU (central processing unit) for executing and controlling normal operation of parts of the dual speed hub;
a plurality of I/O (input/output) ports respectively connected to network apparatus in a computer network, said I/O ports each comprising a transceiver;
a first hub connected to the transceivers of said I/O ports for transmitting packet data in the computer network at a first speeda second hub connected to the transceivers of said I/O ports for transmitting packet data in the computer network at a second speed;
a first MAC (media access control) for packet data transmission at the first speed of said first hub, said first MAC connecting said first hub to said CPU;
a second MAC (media access control) for packet data transmission at the second speed of said second hub, said second MAC connecting said second hub to said CPU; and
a switch connected between said first hub and said second hub for packet data transmission speed adjustment, enabling packet data to be accurately transmitted in the network between network apparatus of different transmission speeds;
wherein said CPU periodically sends a test packet in proper order through one MAC, one hub, said switch and the other hub to the other MAC, then checks the receiving condition and the content of the test packet so as to determine the normality of the function of the switch, and then provides a warning signal to a network management system when said switch is judged abnormal, informing the network manager to repair said switch.
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Abstract
A dual speed hub includes a CPU, two hubs of different transmission speeds, two MACs (media access controls), and a switch, wherein the CPU periodically sends a test packet in proper order through one MAC, one hub, the switch and the other hub to the other MAC, then checks the receiving condition and the content of the returned test packet, then determines the normality of the function of the switch subject to the receiving condition and the content of the returned test packet, and then provides a warning signal to a network management system when the switch is judged abnormal, informing the network manager to repair the switch.
49 Citations
6 Claims
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1. A dual speed hub comprising:
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a CPU (central processing unit) for executing and controlling normal operation of parts of the dual speed hub; a plurality of I/O (input/output) ports respectively connected to network apparatus in a computer network, said I/O ports each comprising a transceiver; a first hub connected to the transceivers of said I/O ports for transmitting packet data in the computer network at a first speed a second hub connected to the transceivers of said I/O ports for transmitting packet data in the computer network at a second speed; a first MAC (media access control) for packet data transmission at the first speed of said first hub, said first MAC connecting said first hub to said CPU; a second MAC (media access control) for packet data transmission at the second speed of said second hub, said second MAC connecting said second hub to said CPU; and a switch connected between said first hub and said second hub for packet data transmission speed adjustment, enabling packet data to be accurately transmitted in the network between network apparatus of different transmission speeds; wherein said CPU periodically sends a test packet in proper order through one MAC, one hub, said switch and the other hub to the other MAC, then checks the receiving condition and the content of the test packet so as to determine the normality of the function of the switch, and then provides a warning signal to a network management system when said switch is judged abnormal, informing the network manager to repair said switch. - View Dependent Claims (2, 3)
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- 4. A dual speed hub redundant switching method comprising the step of driving a CPU to periodically send a test packet through a first MAC (media access control) of a first packet, a first hub of transmission speed equal to said first MAC, a switch and a second hub of a second transmission speed to a second MAC of transmission speed equal to said second hub, and the step of driving said CPU to check the receiving condition and the content of the test packet so as to determine the normality of the function of said switch.
Specification