Method of controlling loop-back process in Ethernet passive...

Details Method of controlling loop-back process in Ethernet passive... Method of controlling loop-back process in Ethernet passive...

2003-08-28

2009-02-17

Chan, Wing F (Department: 2619)

Multiplex communications

Diagnostic testing

Using oam cells

C370S248000, C370S249000

Reexamination Certificate

active

07492719

ABSTRACT:
A method of controlling a loop-back process between a local device and a remote device in an Ethernet passive optical network simplifies the initiation and the termination processes for a loop-back process by avoiding the use of Operation, Administration and Maintenance—Packet Data Unit (OAM PDU) information along with a loop-back control OAM PDU. The method includes the steps of: (a) adding a predetermined field into a loop-back control OAM PDU in the loop-back process, the predetermined field having distinguishing messages for initiation of a loop-back process and messages for termination of a loop-back process; and (b) the local device and the remote device performing a loop-back process using the loop-back control OAM PDU.

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IEEE 802.3ah Etheret in the First Mile Task Force; “OAM in Frames” Oct. 2001; Presentation Materials, 6 pgs.

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