Patent ID: 7933214
Filing Date: 2011-04-26
Classification: H04L

Abstract:
1. A method, performed by a device associated with a transport network, comprising: generating a first traceroute through the transport network; monitoring a performance measure associated with the transport network; comparing the performance measure to a criterion; determining degradation in the transport network when the performance measure matches the criterion; generating a second traceroute through the transport network when the degradation occurs in the transport network; and identifying a node in the transport network that is a source of the degradation in the transport network in response to the node being common to paths of the first and second traceroutes, wherein generating the first traceroute comprises: in response to the transport network comprising a secure intranet portion and an unsecure Internet portion, generating the first traceroute through one of 1) the unsecure Internet portion of the transport network and 2) a tunnel through the secure intranet portion of the transport network and repeating generation of the first traceroute through the other one of 1) the unsecure Internet portion of the transport network and 2) the tunnel through the secure intranet portion of the transport network.