Distributed network repeater system

• US 6,973,230 B1
• Filed: 06/02/2003
• Issued: 12/06/2005
• Est. Priority Date: 05/27/1999
• Status: Expired due to Term

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Mackay, Gordon
• Primary Examiner(s): Healy, Brian
• Application Number:
  US10/453,814
• Time in Patent Office: 918 Days
• Field of Search: 385/24, 385/14, 385/31, 385/49, 385/88, 385/89, 385/92, 385/94, 398/18, 398/37, 398/45, 398/62, 398/64, 398/97
• US Class Current: 385/24
• CPC Class Codes: H04B 3/60 Systems for communication between relatively movable stations, e.g. for communication with lift H04B3/54 takes precedence
• CPC Class Codes: Y10S 439/955 including electronic identifier or coding means

Abstract

A repeater, useable for connecting switches in a data communication network, is provided in a distributed and/or modular fashion. The repeater includes a plurality of separate and distinct components or modules connected to or at least partially housed in, the various switches which the repeater modules couple. Preferably, the repeater autodetects and/or autoconfigures some or all aspects of repeater operations, such as detecting and/or configuring appropriate full/half-duplex mode operation or detecting and/or configuring in response to appropriate or approved cable-type connections. The distributed and/or modular repeater facilitates accommodating various switching or repeater needs as a network grows or contracts.

Claims

1. A network communication system comprising:

at least first and second switches coupled to a plurality of network nodes;

the at least first and second switches coupled to a repeater; and

wherein the repeater is a distributed repeater having a plurality of separate discrete and spaced apart components coupled to one another via at least a first repeater communication link.

2. The network communication system of claim 1, wherein:

the first and second switches are provided in first and second separate and discrete chassis and wherein at least a first of the repeater components is at least partially positioned in the first switch chassis and at least a second of the repeater components is at least partially provided in the second switch chassis.

3. The network communication system of claim 1, wherein the repeater components are end-user installable and removable.

4. The network communication system of claim 3, wherein the at least some of the the repeater components are installable by accessing only a front panel of the plurality of switches.

5. The network communication system of claim 1, wherein the repeater communications link comprises at least a first user-installable cable.

6. A network communication system comprising:

at least first and second switches coupled to a plurality of network nodes;

the at least first and second switches coupled to a repeater; and

wherein the repeater is modular, including a plurality of repeater modules configured

such that repeater capacity can be expanded or downsized by installing or removing one or more of the repeater modules.

7. The network communication system of claim 6, wherein:

the first and second switches are provided in first and second separate and discrete chassis and wherein at least a first of the repeater modules is at least partially positioned in the first switch chassis and at least a second of the repeater modules is at least partially provided in the second switch chassis.

8. The network communication system of claim 6, wherein the repeater modules are end-user installable and removable.

9. The network communication system of claim 8, wherein the at least some of the the repeater modules are installable by accessing only a front panel of the plurality of switches.

10. The network communication system of claim 6, wherein at least one repeater module includes circuitry for detecting whether the at least one repeater module is coupled to exactly one other repeater module.

11. The network communication system of claim 10, including circuitry for configuring all coupled repeater modules of the modular repeater to communicate using full duplex mode only if there are exactly two coupled repeater modules and otherwise configuring all repeater modules to half-duplex mode.

12. The network communication system of claim 6, wherein at least one repeater module includes circuitry which detects whether a cable of a predetermined type is coupled to the module.

13. The network communication system of claim 6, wherein each of the modules includes circuitry which disables transmissions to at least a first module port unless a cable of a predetermined type is coupled to the port.

14. A network communication method comprising:

coupling at least first and second switches to a plurality of network nodes; and

coupling the at least first and second switches to a modular repeater including a plurality of repeater modules configured such that repeater capacity can be expanded or downsized by installing or removing one or more of the repeater modules.

15. A network communication method comprising:

at least first and second switch means;

means for coupling the at least first and second switch means to a plurality of network nodes;

a modular repeater comprising at least first and second repeater module means;

means for coupling the at least first and second switches to the first and second repeater module means; and

means for coupling the first repeater module means to the second repeater module means;

wherein repeater capacity can be expanded or downsized by installing or removing one or more module means.