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RADIUS Bandwidth Capability

Explore the draft proposal on RADIUS Bandwidth Capability, covering attributes, protocol details, and static/dynamic allocation methods for bandwidth management in networking systems.

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RADIUS Bandwidth Capability

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  1. RADIUS Bandwidth Capability draft-lior-radius-bandwidth-capability-00.txt Avi Lior, Bridgewater Systems Farid Adrangi, Intel Paul Congdon, ProCurve Networking Business Chuck Black, ProCurve Networking Business Farooq Bari, AT&T RADIUS Bandwidth Capability

  2. How did we get here? • Torrid history of the draft • Too simple we need a tighter way express bandwidth; It’s to stringent when error occur…. • Generic bandwidth; no lets keep it simple otherwise it will never make it…. • So we listened and this draft represents the latest take. • It has a simple bandwidth attribute, • It has a reasonable “tightness” RADIUS Bandwidth Capability

  3. Attributes • Egress, Ingress Bandwidth • data rate that the authorized user session should be allocated for traffic flowing from/to the user's device within the access network. • Bandwidth Profile Id. • A reference to bandwidth profile for a user. Mutually provisioned between the parties. • Not scalable • Appriori configuration does not roam well. • But it does allow for NAS specific expression of Bandwidth configuration to be represented by a single label. • The RADIUS server can either use Egress, Ingress Bandwidth or Profile ID. Not both! RADIUS Bandwidth Capability

  4. Protocol Details • Bandwidth Advertisement (Optional) • NAS may advertise available bandwidth. • Bandwidth Selection • The home network specifies what bandwidth is to be applied to the user session. • Bandwidth parameters in the Selection SHOULD NOT exceed the corresponding bandwidth parameters in the Advertisement. • Bandwidth Confirmation • Actual allocated bandwidth MUST be reported in the accounting stream. RADIUS Bandwidth Capability

  5. Static and Dynamic Allocation • Both static allocation (during initial authorization) is supported; and • Dynamic authorization (Turbo boost) is supported. • Reporting of change of bandwidth: • Start/Stop or Interim messages. • Selectable by the NAS. • THIS IS AN ISSUE: SHOULD THE NAS control how it reports change in authorizations? If not we need an attribute in Access Accept to tell it what the home network wants. RADIUS Bandwidth Capability

  6. Next steps • WG document? RADIUS Bandwidth Capability

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