The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 2004
Filed:
Feb. 11, 1999
Yunzhou Li, Lowell, MA (US);
Billy C. Ng, Revere, MA (US);
Other;
Abstract
A mechanism for allowing a prober to detect and identify leaky points within a network protocol domain utilizes a Probe Boundary Leak (PBL) protocol to propagate a probe message throughout the network protocol domain. Each PBL router that receives the probe message checks for leaky points in the network protocol domain. Any PBL router that detects a leaky point in the network protocol domain sends a negative response message to the prober including a network address for each leaky point detected by the PBL router. A PBL border router within the network protocol domain being probed sends a positive response message to the prober including a network address for each exit interface supported by the PBL border router. The prober thereby receives a list of “leaky” network interfaces and a list of “non-leaky” exit interfaces for the network protocol domain.