Non-disruptive monitoring of traffic flows in a...

Details Non-disruptive monitoring of traffic flows in a... Non-disruptive monitoring of traffic flows in a...

2006-04-04

2006-04-04

Hsu, Alpus H. (Department: 2665)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S252000, C370S390000, C370S392000, C370S395300

Reexamination Certificate

active

07023804

ABSTRACT:
The method for the non-disruptive monitoring of a packet flow from a target point (e.g., a specific port/VPI/VCI) to a counterpart point in a packet switch having one or more interface devices, connected to an internal bus, for servicing the target point, the counterpart point and a monitor test access connection (TAC) point comprises the steps of: (a) configuring the device servicing the TAC point to retrieve from the bus packets addressed thereto which use a multicast addressing scheme for routing packets from the target point to the counterpart point and from the target point to the monitor TAC point; (b) configuring the device servicing the counterpart point to additionally retrieve the multicast packets from the bus; and (c) configuring the device servicing the target point to address packets received thereat to the counterpart point and the monitor TAC point using the multicast address scheme only after step (b) is completed.

REFERENCES:
patent: 5684797 (1997-11-01), Aznar et al.
patent: 5959972 (1999-09-01), Hamami
patent: 6052373 (2000-04-01), Lau
patent: 6147992 (2000-11-01), Giroir et al.
“ATM Test Access Function (ATAF), Version 1.0”, The ATM Forum Technical Committee, AF-TEST-NM-0094.000, Feb., 1998.

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