User Control and Management Planes v User Plane

User, Control, and Management Planes v User Plane - SCSS (Service Specific Convergence Sublayer) Protocols u Frame relay SCSS u SMDS SCSS u Null SCSS for IP or circuit emulation - Higher Layers u IETF RFC 1483: Multiprotocol Encapsulation Over ATM u IETF RFC 1577: Classical IP Over ATM v Control Plane - Support u Switched Virtual Connections (SVC) u Permanent Virtual Connections (PVC) v Management Plane - Layer Management - Plane Management 10/30/2020 BISDN/黃仁竑副教授 1

Control Plane Architecture B-ISUP DSS 2 (Q. 2931) SSCF-UNI (Q. 2130) User Node MTP 3 SAAL (reliable transport) SSCF-UNI (Q. 2130) SCCOP (Q. 2110) AAL ATM PHY Access Node ATM Tandem PHY Node * SCCOP: retransmission based on selective repeat * SSCF: Service Specific Coordination Function 10/30/2020 BISDN/黃仁竑副教授 2

Control Plane UNI NNI UNI B-ISUP Q. 2931 SAAL SAAL ATM ATM ATM PHY PHY PHY B-ISUP: Broadband ISDN User Part 10/30/2020 BISDN/黃仁竑副教授 3

Control Plane Addressing and Routing v A point-to-point SVC consist of - forward /backward VPI/VCI - ATM UNI port addresses of the source and destination nodes v A point-to-multipoint SVC consist of - VPI/VCI, ATM address of the root - VPI/VCI, ATM addresses of the leaf nodes 10/30/2020 BISDN/黃仁竑副教授 4

Multicasting Issues v Point-to-multipoint - AAL 5 point-to-multipoint connection must be unidirectional to prevent cell interleaving v Multipoint-to-multipoint - VP-multicasting: construct a multipoint-to-multipoint VP? - Multicast Server - Overlaid point-to-multipoint 10/30/2020 BISDN/黃仁竑副教授 5

SVC Addressing v Two types of addressing plans are considered - NSAP (Network Service Access Point): u DCC: ISO 3166 u ICD : British Standards Institute - E. 164 (ITU-T) u ISDN and telephone numbers v Each address format consists of (IDP+DSP) - IDP: includes AFI and IDI - AFI (Authority and Format Identifier) u 1 -octet, identifies the DSP format, DCC(39), ICD(47), E. 164(45) - IDI (Initial Domain Identifier): address domain and network addressing authority - DSP (Domain Specific Part): the address determined by the network authority 10/30/2020 BISDN/黃仁竑副教授 6

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Q. 2931 Call Setup Procedure 10/30/2020 BISDN/黃仁竑副教授 8

Addressing Model v Peer model - Needs ATM ARP (IP -> ATM) v Overlay model - Complicate ATM switch (multiprotocol routers) 10/30/2020 BISDN/黃仁竑副教授 9

Management Plan v Layer Management - With management interface to each layer (PHY, ATM, AAL, higher layers) in both control and user planes - Monitoring user and control plane for faults - generating alarms - taking corrective actions - monitoring compliance to the performance stated in the traffic contract v Plane Management - has no defined structure yet 10/30/2020 BISDN/黃仁竑副教授 10