Multi-layer Multi-domain Inter-op Test based on ACTN Architecture SDN RG, IETF 97th, Seoul, Korea Haomian Zheng (zhenghaomian@huawei.com) Young Lee(leeyoung@huawei.com) Daniele Ceccarelli (daniele.ceccarelli@ericsson.com) Jong Yoon Shin (jongyoon.shin@sk.com) Yunbin Xu(xuyunbin@mail.ritt.com.cn) Yunbo Li(liyunbo@chinamobile.com) Yan Shi(shiyan49@chinaunicom.cn) Boyuan Yan(yanboyuan@bupt.edu.cn)

ACTN Goal Abstraction and Control of Traffic-Engineering Networks Considered as “SDN Architecture & Solution” in IETF Compatible in supporting legacy heterogeneous transport network control/management technologies (e.g., GMPLS/ASON, PCE, NMS/EMS). SDN controllers’ hierarchy and roles Customer network controllers (CNC) Multi-domain service coordinators (MDSC) Physical network controllers (PNC) Multi-domain service coordination based on abstraction/virtualization. Distributed data centers dispersed over different domains including wireless backhaul transport, metro and core packet/optical networks.

ACTN Architecture： Customer Layer CMI Coordination Layer MPI Customer Network Controller PNC (Transport) PNC (Access) PNC (IP) CNC MDSC Customer Layer MDSC CMI Allow Recursion Multi-domain Service Coordinator Coordination Layer MPI Physical Network Controller Network Control Layer SBI 2015.04.08 Physical Layer

Inter-op introduction MDSC Choice 1: RESTConf+YANG Choice 2: PCEP MPI PNC IP/MPLS PNC Transport PNC Transport PNC IP/MPLS Based on Emulators; Inter-op focused on ACTN MPI: Operators are welcomed to discuss or develop their own MDSC; Vendors are expected to have PNC and device emulators with corresponding solution on Southbound Interface Multi-layer, multi-domain and multi-protocol is supported;

Related IETF work ACTN: Applicability: Yang model (with RESTconf) draft-ietf-teas-actn-requirements draft-ietf-teas-actn-framework Applicability: draft-zhang-teas-actn-yang draft-dhody-pce-applicability-actn Yang model (with RESTconf) For Topology: Based on draft-ietf-teas-yang-te-topo-04 For Services: Based on draft-zhang-teas-transport-service-model-00 PCEP: For Topology: draft-dhodylee-pce-pcep-ls-04 For Services: draft-ietf-pce-pce-initiated-lsp-05/draft-dhodylee-pce-stateful-hpce

ACTN Test Case (1) – Topology Abstraction PNC (IP) PNC (T) MDSC MPI Topology Abstraction Steps: Preparation (respective TED & Abstraction Algorithm as per PNC): Each PNC report abstracted topology to MDSC; MDSC create its TED; RESTconf: Get message with topo model for initial topo, with notification on changes; PCEP-LS: LSRpt message for both initial topology and changes; MDSC need to detect the cross-domain link, and stitching to get full topology;

ACTN Test Case(2) – E2E Service Provision Service Provisioning Steps: MDSC initiate a service provisioning request; RESTconf: POST message with Service YANG model; Use Hierarchical PCInitiate for PCEP; Each PNC compute intra-domain path, and establish it respectively; Process is domain-specific, report to MDSC via standard HTTP message; MDSC should have DELETE operation;

ACTN Test Case(3) – Bandwidth Adjustment Service A DC2 A1 A2 B1 B2 C1 C2 DC1 Service B A3 A4 B3 B4 C3 C4 DC3 Bandwidth adjustment Steps: Set up two ‘existing’ LSPs, say 30G and 10G respectively; Update the bandwidth for two LSPs: RESTconf: PUT message with Service model; PCEP: PCUpd and PCRpt message; Looks like a ‘DC load balance’;

ACTN Test Case(4) – Inter-domain Restoration DC2 DC3 DC1 PNC (IP) PNC (T) MDSC MPI Inter-domain Restoration Steps Create one service between DC1 and DC2; Detect a ‘failure’ in transport domain, and assume there is not enough resources to do intra-domain restoration; need to report to MDSC; MDSC create backup inter-layer paths based on failure notification;

Future work Future Work: Suggest to IETF&SDN RG: Continue our job on inter-op test; Result will be published in ACTN wiki after IETF: https://sites.google.com/site/openactn/interoperability-demo/multi-vendor-inter-op-test ; We are willing to see interests and partners to work together. Suggest to IETF&SDN RG: Would be nice to see official inter-op test events

Thank You! BnB Demo Available on Thursday Night!