Communication path control method and repeating apparatus
First Claim
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1. A communication path control method of a repeating apparatus of a layer 2 LAN, comprising the steps of:
- a) when a received frame is a destination-unknown frame, generating and broadcasting a frame for path detection having a shortest data length using a destination address of said received frame and an address of the own apparatus; and
b) when receiving a responding frame returned from a repeating apparatus having found the destination for said frame for path detection, transmitting said received frame for a transmission source of said responding frame.
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Abstract
In a repeating apparatus of a layer 2 LAN, when a received frame is a destination-unknown frame, a frame for path detection having a shortest data length is generated using a destination address of the above-mentioned received frame and an address of the own apparatus and it is broadcasted; and when a responding frame returned from a repeating apparatus having found the destination for the above-mentioned frame for path detection is received, the above-mentioned received frame is transmitted for a transmission source of the above-mentioned responding frame.
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Citations
12 Claims
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1. A communication path control method of a repeating apparatus of a layer 2 LAN, comprising the steps of:
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a) when a received frame is a destination-unknown frame, generating and broadcasting a frame for path detection having a shortest data length using a destination address of said received frame and an address of the own apparatus; and
b) when receiving a responding frame returned from a repeating apparatus having found the destination for said frame for path detection, transmitting said received frame for a transmission source of said responding frame. - View Dependent Claims (4)
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2. A communication path control method of a repeating apparatus of a layer 2 LAN, comprising the steps of:
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a) when a received frame is a broadcast frame or a destination-unknown frame, storing said received frame or a derivative frame thereof; and
b) when receiving the frame the same as said received frame or derivative frame within a predetermined time from the storage of said received frame or derivative frame, discarding the received same frame.
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3. A communication path control method of a repeating apparatus of a layer 2 LAN, comprising the steps of:
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a) when a received frame is a broadcast frame or a destination-unknown frame, storing said received frame or a derivative frame thereof; and
b) when said received frame is a destination-unknown frame, generating and broadcasting a frame for path detection having a shortest data length using a destination address of said received frame and an address of the own apparatus;
c) when receiving the frame the same as said received frame or derivative frame within a predetermined time from the storage of said received frame or derivative frame, discarding the received same frame;
d) when receiving a responding frame returned from a repeating apparatus having found the destination for said frame for path detection, transmitting said received frame for a transmission source of said responding frame. - View Dependent Claims (5)
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6. A repeating apparatus of a layer 2 LAN, comprising:
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a broadcasting part, when a received frame is a destination-unknown frame, generating and broadcasting a frame for path detection having a shortest data length using a destination address of said received frame and an address of the own apparatus; and
a received-frame transmitting part, when receiving a responding frame returned from a repeating apparatus having found the destination for said frame for path detection, transmitting said received frame for a transmission source of said responding frame. - View Dependent Claims (9)
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7. A repeating apparatus of a layer 2 LAN, comprising:
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a storing part, when a received frame is a broadcast frame or a destination-unknown frame, storing said received frame or a derivative frame thereof; and
a discarding part, when receiving the frame the same as said received frame or derivative frame within a predetermined time from the storage of said received frame or derivative frame, discarding the received same frame. - View Dependent Claims (11)
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8. A repeating apparatus of a layer 2 LAN, comprising:
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a storing part, when a received frame is a broadcast frame or a destination-unknown frame, storing said received frame or a derivative frame thereof; and
a broadcasting part, when said received frame is a destination-unknown frame, generating and broadcasting a frame for path detection having a shortest data length using a destination address of said received frame and an address of the own apparatus;
a discarding part, when receiving the frame the same as said received frame or derivative frame within a predetermined time from the storage of said received frame or derivative frame, discarding the received same frame;
a received-frame transmitting part, when receiving a responding frame returned from a repeating apparatus having found the destination for said frame for path detection, transmitting said received frame for a transmission source of said responding frame. - View Dependent Claims (10, 12)
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Specification