GIG QoS Inter-Domain Interoperability Challenges

The Global Information Grid (GIG), is a large and complex undertaking that is intended to integrate virtually all DoD information systems, services, and applications into one seamless, reliable, and secure network. The GIG Transport Segment will be comprised of multiple different network types, each implementing a QoS solution that best fits the network's user needs. Each QoS solution implements different QoS mechanisms across the data, control, and management functional planes and may be reliant on network hardware that is not implemented GIG-wide. Interoperability challenges between these different QoS solutions need to be documented and analyzed to facilitate the delivery of traffic end-to-end across multiple GIG networks. This paper will provide an overview of the GIG Transport Segment, describe network-to-network interface connections, categorize different types of QoS solutions that are being applied to GIG networks, and discuss inter-domain challenges associated with interconnecting these types of solutions.