Diameter QoS

1
Diameter QoS

• John, Pete, Avri, Glen, Tseno, Hannes, Tina
• presented by Tina TSOU
• IETF 67, San Diego, November 2006

2
Status

• Mailing list discussions about the direction we
  should take.
• Strawman proposal to see how proposal by Avi Lior
  would look like
• http//www.tschofenig.com/svn/draft-tschofenig-dim
  e-diameter-qos/diameter-qos-strawman-00.txt
• A draft group (Hannes, John, Pete, Avri, Glen,
  Tseno, Tina) worked out http//tools.ietf.org/wg/d
  ime/draft-tschofenig-dime-diameter-qos-01.txt
• Presentation about approaches taken by other SDOs
  at the Diameter QoS Dinner (Sunday, 9th July).
  SDOs working on QoS related to this problem
  include
• 3GPP
• 3GPP2
• DSL
• Wimax
• TISPAN
• ITU-T

3
Overview

• Diameter solution consists of the following
  building blocks
• Packet Classification (current work ongoing to
  align it with RADIUS)
• QoS parameter description
• Usage scenarios

4
QoS Parameter Description

• Different organizations plan to use different QoS
  parameters
• Unlikely that we (DIME, IETF) is going to find a
  parameter set that everyone wants
• Problem sounds familiar?
• Investigate whether we can reuse existing work
  done in TSVWG and NSIS
• Flexibility and extensibility when it comes to
  the parameter usage

5
Usage Scenarios

• QoS Parameters can be used in a number of
  Diameter applications (such as NASREQ, EAP, DCC)
• Initial requests, client performs
  re-authorization, Server requests
  re-authorization, Server terminates session
  (e.g., credits exhausted), Client terminates
  session, ....
• Not difficult but it takes some time to describe
  them in a reasonable level of detail.

6
What editors have done between IETF-66 and
IETF-67

• Investigate QoS parameter problem
• Compiling a new draft update http//tools.ietf.org
  /wg/dime/draft-tschofenig-dime-diameter-qos-01.txt
  for the working group to analyze

7
Difference between 00 and 01

• updated the binding push method in section 3.2
  QoS authorization models
• also corrected some small errors as given in the
  comments in the draft group mail discussion

8
Next Steps

• In WG DIME charter
• - Diameter QoS application. This document will
  develop a newDiameter application for supporting
  QoS in AAA deployments.The NSIS WG will be
  consulted on proper design of QoS attributes.
• Do people think it is ready to go to initiate as
  a WG draft as it is in WG item?