Secure communications between Bandwidth brokers

In the Differentiated Services (DiffServ) architecture, each domain has a Bandwidth Broker to provide the resources management, primarily bandwidth reservation. In a multi-domain environment, Simple Inter-domain Bandwidth Broker Signaling (SIBBS) protocol is proposed for the inter-domain communication protocol proposed for bandwidth broker communication. Since the information exchanged between BBs are sensitive in sense of Service Level Agreement (SLA), the communications between the inter-domain bandwidth brokers should be protected from attacks. This paper presents the incorporation of the Public Key Infrastructure (PKI) security model for SIBBS. A prototype system with the security elements as well as the implementation of the SIBBS was successfully developed and tested.