HIERARCHICAL POLICERS FOR ENFORCING DIFFERENTIATED TRAFFIC BEHAVIOR

• US 20080056268A1
• Filed: 10/31/2007
• Published: 03/06/2008
• Est. Priority Date: 11/19/2002
• Status: Active Grant

• Current Assignee: Juniper Networks Incorporated
• Original Assignee: Juniper Networks Incorporated
• Inventors: GREENE, Spencer, LACROUTE, Philippe, DYCKERHOFF, Stefan, RAHIM, Rami, FERGUSON, Dennis, WASHBURN, James
• Granted Patent: US 7,787,472 B2
• Time in Patent Office: Days
• US Class Current: 370/394
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/20 Traffic policing
• CPC Class Codes: H04L 47/2441 relying on flow classification, e.g. using integrated services [IntServ]
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04L 47/39 Credit based

Abstract

A hierarchical traffic policer may include a first policer configured to pass first packets when a first condition is met. The first policer also may alter selection information within the passed first packets. A second policer may be configured to pass second packets when a second condition is met. The second policer may be further configured to pass all of the passed first packets from the first policer based on the altered selection information within the passed first packets.

Claims

1. A hierarchical traffic policer comprising:

a traffic sorter configured to separate packets of a first type from packets of a second type;

a first policer configured to police the packets of the first type from the sorter; and

a second policer configured to selectively police the packets of the second type from the sorter and packets of the first type from the first policer.

2-28. -28. (canceled)