Steve C Phillips, 60455 Hyde St UNIT 73, San Francisco, CA 94109

7643409, Jan 5, 2010

Aug 25, 2004

10/925743

Eric Voit - Bethesda MD, US
Steve Phillips - San Jose CA, US
Ali Sajassi - Concord CA, US
Yves Hertoghs - Schilde, BE

Cisco Technology, Inc. - San Jose CA

G01R 31/08
G06F 15/173

370218, 709239

A computer network includes a core network connected with first and second Ethernet access domain networks, each of Ethernet access domain networks including a user-facing provider edge (u-PE) device, a primary network-facing provider edge (n-PE) device, a redundant n-PE device, and a plurality of aggregation provider edge (Agg-PE) devices providing connectivity between to the u-PE device and the primary and redundant n-PE devices, the Agg-PE devices running a spanning-tree protocol (STP) algorithm. A primary data path is provided along with first and second redundant data paths that include first and second redundant pseudowires (PWs), respectively, connected across the core network, the first and second redundant data paths being blocked by the STP algorithm when the primary data path is available, the STP algorithm unblocking either the first or second redundant data path in response to a failure of the primary data path. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1. 72(b).

7962582, Jun 14, 2011

Jun 21, 2006

11/473298

Sunil Potti - Castro Valley CA, US
Praveen Joshi - San Jose CA, US
Rahul Tripathi - San Jose CA, US
Steve Phillips - San Jose CA, US

Cisco Technology, Inc. - San Jose CA

G06F 15/177
G06F 15/173
G01R 31/08
H04L 12/28

709220, 709223, 709226, 370229, 370400

Enforcing network service level agreements in a network infrastructure element comprises receiving, at the network infrastructure element, an application-layer message comprising one or more of the packets; forwarding the application-layer message toward a destination endpoint and concurrently copying the application-layer message without disrupting the forwarding; using the copied application-layer message, discovering one or more applications or services that are using the network; using the copied application-layer message, identifying one or more network-layer condition metrics, and identifying one or more application-layer condition metrics; determining, based on the identified network-layer condition metrics and the application-layer condition metrics, whether one or more conditions of a service level agreement are violated; and in response to determining a violation, performing one or more responsive operations on one or more network elements.