QOS provisioning for IP based networks

Traditional IP networks offer best-effort service. This works well with applications like email, file transfer, etc. But, applications like VOIP, video conferencing, etc. require certain service-level guarantees. So, future IP must provide required quality of service (QOS) to various categories of applications. For this, entire traffic can be categorized into various traffic classes with the members of each traffic class requiring similar treatment of service. ITU-TQOS Standards Y1540and Y1541 can be used for this categorization. Internet today has lot of resources which facilitates the efficient handling of traffic by allocating separate queue for each traffic class at routers. To route the packets to appropriate queue, packets' header can be coded with code points which are unique for each traffic class. The queues can then be managed using fuzzy-based active queue management (AQM) techniques. By implementing the above, required QOS can be provided to various categories of traffic.