Claims
- 1. A LAN adapter connected to a LAN, comprising:
- an uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN;
- a downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN;
- means for judging, in accordance with a content of a control signal received from a send/receive partner apparatus, a port type of said send/receive partner apparatus, from among a plurality of port types including at least said uplink port and said downlink port, when the self port is electrically connected to said send/receiver partner apparatus via said LAN; and
- means for outputting a control signal by which said send/receive partner apparatus can recognize that the self port is a downlink port, when the port of said send/receive partner apparatus is an uplink port, and that the self port is an uplink port, when the port of said send/receive partner apparatus is a downlink port.
- 2. A LAN interface module, in a LAN connecting apparatus for connecting between LANs, comprising:
- an uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN;
- a downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN;
- means for judging, in accordance with a content of a control signal received from a send/receive partner apparatus, a port type of a send/receive partner apparatus, from among a plurality of port types including at least said uplink port and said downlink port, when the self port is electrically connected to said send/receive partner apparatus via said LAN; and
- means for outputting a control signal by which said send/receive partner apparatus can recognize that the self port is a downlink port, when the port of said send/receive partner apparatus is an uplink port, and that the self port is an uplink port, when the port of said send/receive partner apparatus is a downlink port.
- 3. A LAN connecting apparatus for connecting between LANs, comprising:
- an uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN;
- a downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN;
- means for judging in accordance with a content of a control signal received from a send/receive partner apparatus, a port type of a send/receive partner apparatus, from among a plurality of port types including at least said uplink port and said downlink port, when the self port is electrically connected to said send/receive partner apparatus via said LAN; and
- means for outputting a control signal by which said send/receive partner apparatus can recognize that the self port is a downlink port, when the port of said send/receive partner apparatus is an uplink port, and that the self port is an uplink port, when the port of said send/receive partner apparatus is a downlink port.
- 4. A LAN connecting apparatus for connecting between LANS, comprising:
- an uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN;
- a downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN;
- a LAN interface module connected to said uplink port and said downlink port, said LAN interface module including:
- means for judging in accordance with a content of a control signal received from a send/receive partner apparatus, a port type of a send/receive partner apparatus, from among a plurality of port types including at least said uplink port and said downlink port, when the self port is electrically connected to said send/receive partner apparatus via said LAN; and
- means for outputting a control signal by which said send/receive partner apparatus can recognize that the self port is a downlink port, when the port of said send/receive partner apparatus is an uplink port, and that the self port is an uplink port, when the port of said send/receive partner apparatus is a downlink port.
- 5. A LAN adapter in a node connected to a LAN, comprising:
- an uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN;
- a downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN;
- means for judging a preferential transfer request in accordance with a preliminarily defined control process, when a conflict occurs between an transfer request generated in the self node and a control signal indicating a transfer request inputted from a send/receive partner apparatus, when the self port is connected to an uplink port of said send/receive partner apparatus via said LAN, as a downlink port; and
- means for outputting a control signal to said send/receive partner apparatus, for executing a transfer request judged as preferential.
- 6. A LAN interface module, in a LAN connecting apparatus for connecting between LANs, comprising:
- an uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN;
- a downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN;
- means for judging a preferential transfer request in accordance with a preliminarily defined control process, when a conflict occurs between a transfer request generated in the self node and a control signal indicating a transfer request inputted from send/receive partner apparatus, when the self port is connected to an uplink port of said send/receive partner apparatus via said LAN, as a downlink port; and
- means for outputting a control signal to said send/receive partner apparatus, for executing from a transfer request judged as preferential.
- 7. A LAN connecting apparatus for connecting between LANs, comprising:
- an uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN;
- a downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN;
- means for judging a preferential transfer request in accordance with a preliminarily defined control process, when a conflict occurs between a transfer request generated in the self node and a control signal indicating a transfer request inputted from a send/receive partner apparatus, when the self port is connected to an uplink port of said send/receive partner apparatus via said LAN, as a downlink port; and
- means for outputting a control signal to said send/receive partner apparatus, for executing from a transfer request judged as preferential.
- 8. A LAN connecting apparatus for connecting between LANs, comprising:
- an uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN;
- a downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN;
- a LAN interface module connected to said uplink port and said downlink port, said LAN interface module including:
- means for judging a preferential transfer request in accordance with a preliminarily defined control process, when a conflict occurs between a transfer request generated in the self node and a control signal indicating a transfer request inputted from a send/receive partner apparatus, when the self port is connected to an uplink port of said send/receive partner apparatus via said LAN, as a downlink port; and
- means for outputting a control signal to said send/receive partner apparatus, for executing from a transfer request judged as preferential.
- 9. A LAN adapter control method performed in a LAN adapter connected to a LAN constituted by at least an uplink port and a downlink port said uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN, and said downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN, said LAN adapter control method comprising the steps of:
- judging, in accordance with a content of a control signal received from said send/receive partner apparatus, a port type of a send/receive partner apparatus, from among a plurality of port types including at least said uplink port and said downlink port, when the self port is electrically connected to said send/receive partner apparatus via said LAN; and
- outputting a control signal by which said send/receive partner apparatus can recognize that the self port is a downlink port, when the port of said send/receive partner apparatus is an uplink port, and that the self port is an uplink port, when the port of said send/receive partner apparatus is a downlink port.
- 10. A module control method performed in a LAN interface module, in a LAN connecting apparatus for connecting between LANs, said LAN interface module being constituted by at least an uplink port and a downlink port said uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN, and said downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputting from said downstream apparatus via said LAN, said module control method comprising the steps of:
- judging, in accordance with a content of a control signal received from a send/receive partner apparatus, a port type of a send/receive partner apparatus, from among a plurality of port types downlink port, when the self port is electrically connected to said/receive partner apparatus via said LAN; and
- outputting a control signal by which said send/receive partner apparatus can recognize that the self port is a downlink port, when the port of said send/receive partner apparatus is an uplink port, and that the self port is an uplink port, when the port of said send/receive partner apparatus is a downlink port.
- 11. A control method performed in a LAN connecting apparatus for connecting between LANs, said LAN connecting apparatus being constituted by at least an uplink port and a downlink port, said uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN, and said downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN, said control method comprising the steps of:
- judging in accordance with a content of a control signal received from a send/receive partner apparatus, a port kind of a send/receive partner apparatus, from among a plurality of port kinds including at least said uplink port and said downlink port, when the self port is electrically connected to said send/receive partner apparatus via said LAN; and
- outputting a control signal by which said send/receiver partner apparatus can recognize that the self port is a downlink port, when the port of said send/receive partner apparatus is an uplink port, and that the self port is an uplink port, when the port of said send/receive partner apparatus is a downlink port.
- 12. A LAN adapter control method in a LAN adapter connected to a LAN constituted by at least an uplink port and a downlink port, said uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN, and said downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN, said LAN adapter control method comprising the steps of:
- judging a preferential transfer request in accordance with a preliminarily defined control process, when a conflict occurs between a transfer request generated in the self node and a control signal indicating a transfer request inputted from a send/receive partner apparatus, when the self port is connected to an uplink port of said send/receive partner apparatus via said LAN, as a downlink port; and
- outputting a control signal to said send/receive partner apparatus, for executing from a transfer request judged as preferential.
- 13. A module control method performed in a LAN interface module, in a LAN connecting apparatus for connecting between LANs, said LAN interface module being constituted by at least an uplink port and a downlink port, said uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN, and said downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN, said module control method comprising the steps of:
- judging a preferential transfer request in accordance with a preliminarily defined control process, when a conflict occurs between a transfer request generated in the self node and a control signal indicating a transfer request inputted from a send/receive partner apparatus, when the self port is connected to an uplink port of said send/receive partner apparatus via said LAN, as a downlink port; and
- outputting a control signal to said send/receive partner apparatus, for executing from a transfer request judged as preferential.
- 14. A control method performed in a LAN connecting apparatus for connecting between LANS, said LAN connecting apparatus being constituted by at least an uplink port and a downlink port, said uplink port outputting an upward control signal to an upstream apparatus via said LAN, and receiving a downward control signal outputted from said upstream apparatus via said LAN, and said downlink port outputting a downward control signal to a downstream apparatus via said LAN, and receiving an upward control signal outputted from said downstream apparatus via said LAN, said control method comprising the steps of:
- judging a preferential transfer request in accordance with a preliminarily defined control process, in case a conflict occurs between a transfer request generated in the self node and a control signal indicating a transfer request inputted from a send/receive partner apparatus, when the self port is connected to an uplink port of said send/receive partner apparatus via said LAN, as a downlink port; and
- outputting a control signal to said send/receive partner apparatus, for executing from a transfer request judged as preferential.
Priority Claims (2)
Number |
Date |
Country |
Kind |
6-032469 |
Mar 1994 |
JPX |
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6-279344 |
Nov 1994 |
JPX |
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Parent Case Info
This application is a Continuation of application Ser. No.08/397,369, now U.S. Pat. No. 5,724,507 filed Mar. 2, 1995.
US Referenced Citations (11)
Continuations (1)
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Number |
Date |
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Parent |
397369 |
Mar 1995 |
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