draft-khan-ip-serv-peer-arch-03.txt SPEERMINT Peering Architecture IETF-66, Montreal, Canada Sohel Khan, Ph.D. Technology Strategist

2 Status New authors ­Reinaldo Penno, Juniper Network ­Daryl Malas, Level 3 ­Sohel Khan, Sprint ­Adam Uzelac, Global Crossing ­Mike Hammer, Cisco Important Contributor ­Otmar Lendl Signification revision as per the input from ­the IETF-65 meeting ­the mailing list Since, there are significant changes, we will go over the whole draft once again Sohel Khan, Ph.D., Sprint-Nextel

3 Introduction The Draft Defines ­a reference SPEERMINT architecture ­functional components ­and peering interface functions Sohel Khan, Ph.D., Sprint-Nextel

4 Peering Network Context Public (L3) Private (L3) L3 Peering Point (out of scope) Enterprise Provider A (L5) Enterprise Provider B (L5) Service Provider C (L5) Service Provider D (L5) Enterprise Provider E (L5) Service Provider G (L5) Enterprise Provider F (L5) Service Provider H (L5) Public Peering Function/Federation Entity Location Function Sohel Khan, Ph.D., Sprint-Nextel Private Peering Function/Federation Entity Location Function

5 Federation A providers' group ­ that has contractual agreements on various aspects of peering relationship ­such as common: ­administrative policy, ­ settlement, and ­ terminating calls. The members of a federation may ­jointly use a set of entities such as: ­location function, ­application servers, ­subscriber databases, ­SIP proxies, ­and/or platforms that synthesize various SIP and non- SIP based applications. Sohel Khan, Ph.D., Sprint-Nextel

6 Reference Peering Architecture Enables media paths interconnection between endpoints MF SF Enables discovery of SF or exchanges policy/parameters to be used by SF OF Enables discovery of the SF or OF LF PurposeRef. Security QF Negotiates and reserves bandwidth resources, as well as polices/provides measurements for media paths SIP Service Provider Y SIP Service Provider X OF SF MF QF AF Security Sohel Khan, Ph.D., Sprint-Nextel LF Enables discovery of endpoints, assists in discovery and exchange of parameters to be used with the MF AF Application Function: TBD or deleted

7 Location Function (LF) Enables discovery of the next hop peering ­signaling function (SF) ­or operation function (OF) Provides trusted registry database service Can be Internal or external to a federation if a federation exists Examples: ­ENUM ­DNS ­Global Public Database (if hierarchical system exists ) ­SIP Redirect Server Out of scope ­Number portability ­Mobility Function Sohel Khan, Ph.D., Sprint-Nextel

8 Location Function Examples ENUM: o Input: E.164 o Output: SIP AoR of a next hop Signaling Function (SF) or OF. DNS: o Input: Domain Name from the AoR of an end user o Output: SIP AoR of the next hop Signaling Function (SF) Global Public Database (if hierarchical system exists): o Input: ­Local Signaling address (local context) ­The domain name of an end user ­ the domain name of a destination service provider o Output: The next hop reachable address. SIP Redirect Server o Input: E.164 address or domain Name from the AoR of an end user o Output: SIP AoR of the next hop Signaling Function (SF) Sohel Khan, Ph.D., Sprint-Nextel

9 Operation Function (OF) Enables discovery of SF Exchanges policy/parameters to be used by SF Implementation is optional Examples ­Dynamic subscribe, notify, and exchange of policy information and parameters among providers ­SLA Exchange ­Accounting Data Exchange Sohel Khan, Ph.D., Sprint-Nextel

10 Signaling Function (SF) Performs L5 peering function ­Enables discovery of endpoints, ­Assists in discovery and exchange of parameters to be used with the MF Examples of main components: ­SIP Proxy, SIP B2BUA as per SIP RFCs Other examples (optional) ­Session Admission Control (SAC) ­SIP DoS Protection ­SIP Topology Hiding ­SIP Security, Privacy, and Encryption Sohel Khan, Ph.D., Sprint-Nextel

11 Media Function (MF) Enables media paths interconnection between endpoints Examples: ­Transcoding of one voice coding to other ­e.g., G.711 to EvRC ­RTP Relay ­Media security Sohel Khan, Ph.D., Sprint-Nextel

12 QoS Function (QF) Negotiates and reserves bandwidth resources, as well as polices/provides measurements for media paths Ensures incoming and outgoing packets are marked correctly according to federation and peer policy ­Implementation is Optional unless government regulation mandates ­Various standard body should agree on a compatible set of SIP priority header mapping with particular attention to ETS/WPS Sohel Khan, Ph.D., Sprint-Nextel

13 Application Function (AF) Do we need it? If we need it ­Please write use cases in the discussion list Sohel Khan, Ph.D., Sprint-Nextel

14 Deployment Option SIP Service Provider Y SIP Service Provider X SF MF SF MF SIP RTP Composed or Decomposed: SF and MF Centralized or Distributed: whether logical and physical functions are in one geographical point or functions are distributed among multiple geographical locations When one SF controls multiple MFs, which MF (IP address) the media should be forwarded to? Sohel Khan, Ph.D., Sprint-Nextel

15 Next Step Continue to improve the draft Accept the draft as a working group item Sohel Khan, Ph.D., Sprint-Nextel