Patent ID: 7228421
Filing Date: 2007-06-05
Classification: H04L

Abstract:
1. A method for generating a control message to be transmitted from a first network device to a second network device in a data network, the control message relating to an action to be performed at the second network device, the method comprising: determining a first control message to be generated, wherein the first control message corresponds to a security protocol control message; identifying reason information relating to at least one reason for generating the first control message; and generating the first control message, wherein the first control message includes explicit reason information relating to the identified at least one reason for generating the control message; wherein the reason information includes at least one reason selected from a group of reasons consisting of: a user initiated reason, an expired lifetime reason, and a no error reason; wherein the first control message includes a first payload selected from a group consisting of: a security association payload and a delete payload; wherein the first payload includes the reason information.