SELECTOR IN SWITCHING MATRIX, LINE REDUNDANT METHOD, AND LINE REDUNDANT SYSTEM

• US 20090092044A1
• Filed: 12/08/2008
• Published: 04/09/2009
• Est. Priority Date: 10/10/2001
• Status: Active Grant

• Current Assignee: Juniper Networks Incorporated
• Original Assignee: Juniper Networks Incorporated
• Inventors: SAITO, Takashi
• Granted Patent: US 7,839,772 B2
• Time in Patent Office: Days
• US Class Current: 370/228
• CPC Class Codes: H04L 12/5601 Transfer mode dependent, e.g. ATM
• CPC Class Codes: H04L 2012/5627 Fault tolerance and recovery
• CPC Class Codes: H04L 49/3081 ATM peripheral units, e.g. policing, insertion or extraction

Abstract

There is provided a line redundant method for implementation of line switching in a switching matrix, including the bridge step of outputting a data signal to a plurality of redundant lines in the switching matrix, and the selector step of selecting only a data signal, of a plurality of data signals input from another switching matrix other than the switching matrix through the plurality of redundant lines, which is input through a redundant line required in the switching matrix, and not selecting the data signals input to the switching matrix through the lines other than the required redundant line. A line redundant system for implementing this method is also provided.

Claims

1. A selector comprising a cutoff function of performing processing of outputting or not outputting one of a plurality of data signals input from a switching matrix.

2. A selector according to claim 1, wherein the cutoff function implements processing of outputting or not outputting said one data signal by using a control signal.

3. A selector according to claim 2, wherein the control signal is generated when an OS and line control section in the switching matrix cooperate with each other.

4. A selector according to claim 2, wherein the cutoff function is implemented by using a framer provided. for a input port.

5. A line redundant method for implementation of line switching in a switching matrix, comprising:

the bridge step of outputting a data signal to a plurality of redundant lines in the switching matrix; and

the selector step of selecting only a data signal, of a plurality of data signals input from another switching matrix other than the switching matrix through the plurality of redundant lines, which is input through a redundant line required in the switching matrix, and not selecting the data signals input to the switching matrix through the lines other than the required redundant line.

6. A method according to claim 5, wherein the selector step is implemented by using a framer function for the data signal.

7. A line redundant system for implementing line switching in a switching matrix, comprising:

bridge means for simultaneously outputting data signals to a plurality of grouped line accommodating sections connected to a common switching fabric in the switching matrix; and

selector means for outputting only a data signal, of data signals input from another switching matrix other than the switching matrix to a plurality of grouped input ports in the line accommodating sections, which is required in the common switching fabric from the input port to the common switching fabric, and cutting off the data signals from other input ports other than the input port.

8. A system according to claim 7, wherein said selector means is implemented by using a framer provided for the input port.