Patent ID: 8948001
Filing Date: 2015-02-03
Classification: H04L

Abstract:
1. A method comprising: by a service node, applying a service to network traffic received at a service plane of the service node via a primary service engineered path, wherein the service node operates as an egress device of the primary service engineered path; detecting, at the service plane of the service node, that a performance level of the service differs from an expected performance level of the service by at least a threshold amount, wherein the performance level of the service is independent of an overall operational state of the service node; outputting a notification from the service plane to a fault detection network protocol in a forwarding plane of the service node in response to determining that the detected performance level of the service differs from the expected performance level by at least the threshold amount; and in response to receiving notification from the service plane, outputting, by the fault detection network protocol, a control message to a router on the primary service engineered path, wherein the control message notifies the router to reroute network traffic to a second instance of the service provided at a second service node reachable by a backup service engineered path.