Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2007-10-30
2007-10-30
To, Doris H. (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S244000, C370S254000
Reexamination Certificate
active
09883062
ABSTRACT:
A method and system for mapping logical fabric ports to line ingress queues. The system provides for the mapping of line ingress queues to logical destination ports instead of to physical fabric ports. The association of ingress queues with logical destination ports enables a doubling of the switch port capacity that is available when redundancy is employed on all switch ports within the switching fabric. The method and system provides for the distributed broadcasting of mapping table updates. The system employs a multi-shelf switching fabric. Upon the active-standby switchover of a shelf line card, the shelf manager on the impacted shelf, broadcasts by means of a broadcast control cell (BCC), mapping table updates to the TM ASICs associated with each shelf in the shelf cluster. These updates include the current logical to physical port mappings of the logical and the physical ports located on the impacted shelf.
REFERENCES:
patent: 5166926 (1992-11-01), Cisneros et al.
patent: 5724347 (1998-03-01), Bell et al.
patent: 5765032 (1998-06-01), Valizadeh
patent: 6078963 (2000-06-01), Civanlar et al.
patent: 6370155 (2002-04-01), Cantwell et al.
patent: 6385200 (2002-05-01), Erami et al.
patent: 6411599 (2002-06-01), Blanc et al.
patent: 6442758 (2002-08-01), Jang et al.
patent: 6614758 (2003-09-01), Wong et al.
patent: 6628609 (2003-09-01), Chapman et al.
patent: 6674756 (2004-01-01), Rao et al.
patent: 6735212 (2004-05-01), Calamvokis
patent: 6738828 (2004-05-01), Keats et al.
patent: 6798784 (2004-09-01), Dove et al.
patent: 6879559 (2005-04-01), Blackmon et al.
patent: 6888792 (2005-05-01), Gronke
patent: 2002/0093952 (2002-07-01), Gonda
patent: 2002/0103921 (2002-08-01), Nair et al.
patent: 2002/0141344 (2002-10-01), Chidambaran et al.
patent: 2003/0031126 (2003-02-01), Mayweather et al.
patent: 2003/0179712 (2003-09-01), Kobayashi et al.
“Cisco MGX 8850 - Wide-Area IP +ATM Switch,” Cisco Product Catalog, pp. 1-12 (Aug. 2000).
“Cisco - MGX8850 Potential PXM1 Loss of Database Synchronization,” http://www.cisco.com/warp/public/770/fn12863.html, 2 pgs. (Aug. 7, 2000).
Ellis John
Medved Jan
Blakely , Sokoloff, Taylor & Zafman LLP
Cisco Technology Inc.
Mered Habte
To Doris H.
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