With the integration of voice, video, and data over networks, quality of service has become a hot topic recently. A number of solutions have been proposed at various standards bodies including IEEE 802.3, IETF, and ATM Forum.

ATM Forum has designed service categories; IEEE 802.3 is incorporating priorities in LANs; IETF initially worked on integrated services and RSVP and recently moved on to differentiated services for IP users. These approaches will be briefly explained.

The key issue is which of these approaches are realistic for users and at the same time achievable for service providers and network designers. These and other issues in providing end-to-end QoS will be discussed in this presentation.

This talk covers the following topics:

• What is QoS?
• ATM Service Categories
• ATM QoS
• ATM QoS: Issues
• Integrated Services
• RSVP
• RSVP Messages
• Problems with RSVP and Integrated Services
• Differentiated Services
• DiffServ Concepts
• Per-hop Behaviors
• Code Points
• Expedited Forwarding
• Assured Forwarding
• Assured Forwarding: Issues
• AF Simulation Results
• Problems with DiffServ
• Multiprotocol Label Switching
• MPLS
• Traffic Engineering Using MPLS
• Bandwidth Broker
• IEEE 802.1D Model
• End-to-end View
• Summary
• Conclusions
• QoS Support By Vendors
• References
• List of Acronyms

Presentation slides in Adobe Acrobat Format: 1 slide/page