1 IETF67/TSVWG: RSVP Proxy draft-lefaucheur-tsvwg-rsvp-proxy-00.txt RSVP Proxy Approaches Francois...
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Transcript of 1 IETF67/TSVWG: RSVP Proxy draft-lefaucheur-tsvwg-rsvp-proxy-00.txt RSVP Proxy Approaches Francois...
1IETF67/TSVWG: RSVP Proxy
draft-lefaucheur-tsvwg-rsvp-proxy-00.txt
RSVP Proxy Approaches
Francois Le Faucheur - [email protected] Le Faucheur,Dan Wing Cisco Systems
Jukka MannerUniversity of Helsinki
222IETF67/TSVWG: RSVP Proxy
RSVP Proxy Background
• RSVP deployments happening:
– eg for Voice/Video CAC on WAN in Enterprise
– eg for VoD CAC on Aggregation in Triple-Play SP
• RSVP also considered:
– eg for Mobile Voice CAC on Radio
• Many deployment scenarios involve RSVP only on a subset of end-to-end path
– non-RSVP-capable Sender, or non-RSVP-capable Receiver
– RSVP CAC only needed on (radio) access
• Current RSVP spec assumes end-to-end signaling
• Need to :
– document (resurrect) non end-to-end deployment approaches
– standardize corresponding extensions (where needed)
• NSIS included this in base specs
333IETF67/TSVWG: RSVP Proxy
L3 IP/MPLS Core
VoD
802.1Q
Ethernet/IP/MPLS Aggregation
Business
Corporate
Use Case: VoD CAC on Aggregation in Triple Play
Residential
RSVP Path
RSVP Resv
RSVPReceiver Proxy
RSVPUnaware
RSVP aware
RSVP aware
VideoStream
444IETF67/TSVWG: RSVP Proxy
Location BLocation A
Use Case: Voice/Video CAC on WAN in Enterprise
HQ
RSVP
SIP
SIP
SIP Server
RSVPUnaware
RSVP aware
RSVP Proxy
WAN
RSVP Proxy
555IETF67/TSVWG: RSVP Proxy
Example of required RSVP Extension
• Regular RSVP sends CAC reject notification towards Receiver
• RSVP Receiver Proxy can not do much with it
• Extension to notify Sender of CAC reject
VoD
RSVPReceiver Proxy
RSVPUnaware RSVP aware
Path
Resv
ResvErr (CAC reject)
CAC reject
??? PathErr (CAC reject)
666IETF67/TSVWG: RSVP Proxy
I-Ds Roadmap
• As announced on mailing list after Montreal
• draft-lefaucheur-tsvwg-rsvp-proxy:
•Provides Framework for RSVP Proxy concept
•Taxonomy of (useful) Proxy Approaches
•Minor RSVP extensions for simple Proxy approaches
•Use Cases (in Appendix)
• draft-manner-tsvwg-rsvp-proxy-sig ("Localized RSVP for Controlling RSVP Proxies”) :
•Specifies RSVP signaling extensions for more complex Proxy approaches (RSVP-Signaling-Triggered Proxy)
777IETF67/TSVWG: RSVP Proxy
Taxonomy of Proxy Approaches:
• Path-Triggered Receiver Proxy
• Path-Triggered Sender Proxy for Reverse Direction
• Inspection-Triggered Proxy
• STUN-Triggered Proxy
• Application-Signaling-Triggered On-Path Proxy
• Application-Signaling-Triggered Off-Path Source Proxy
• RSVP-Signaling-Triggered Proxy
888IETF67/TSVWG: RSVP Proxy
Next Steps
• Progress RSVP Proxy under TSVWG
• Address comments received
• Should rsvp-proxy target Informational Track or Standards Track?
If Informational, need to move minor “extensions” out of rsvp-proxy I-D.
Should all extensions go to rsvp-proxy-sig or to separate I-Ds for different Proxy approaches?