Arrangements and methods for minimizing delay in high-speed taps

• US 9,749,261 B2
• Filed: 07/17/2013
• Issued: 08/29/2017
• Est. Priority Date: 02/28/2010
• Status: Active Grant

• Current Assignee: Keysight Technologies Singapore Sales Pte Ltd (Keysight Technologies, Inc.)
• Original Assignee: Ixia (Keysight Technologies, Inc.)
• Inventors: Matityahu, Eldad, Shaw, Robert, Gurfinkel, Shlomo, Hui, Siuman
• Primary Examiner(s): DAYA, TEJIS A
• Application Number:
  US13/944,801
• Publication Number:
  US 20140022891A1
• Time in Patent Office: 1,504 Days
• Field of Search: None
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04L 41/0668 by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
• CPC Class Codes: H04L 43/12 Network monitoring probes
• CPC Class Codes: H04L 49/205 Quality of Service based

Abstract

Methods and arrangements are provided for minimizing delay in a high-speed tap arrangement are disclosed and include hardware and software arrangements and methods for quickly switching the transmission path for data between a primary data path and a bypass data path. The switching is accomplished rapidly using set of powered analog switches and a relay to minimize packets loss in the event of power loss. Further, when power is restored, software and hardware methods and arrangements disclosed herein permit the data path to be promptly restored resulting in the restoration of tapping ability quickly after power is restored.

Claims

1. A monitoring device for enabling monitoring of data traversing between a first network device and a second network device through a network, comprising:

a primary data path that routes said data for monitoring;

a secondary data path that routes said data in a manner that bypasses said monitoring;

a sensor for monitoring power level supplied to said monitoring device;

a relay for switching from said primary data path to said secondary data path if said power level falls below a predefined level;

a set of analog switches controlled by a state machine of said monitoring device for establishing a temporary data path to ensure at least a portion of said data continues to traverse between said first network device and said second network device while said relay attempts to perform said switching.

2. The monitoring device of claim 1 wherein said relay is a solid state relay.

3. The monitoring device of claim 1 wherein said set of analog switches has a faster response rate than a response speed of said relay.