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1 Copyright © 2011 The Printer Working Group. All rights reserved. 1 MFD CWMP BOF October 4, 2011 Cupertino, CA PWG F2F Meeting
2 Copyright © 2011 The Printer Working Group. All rights reserved. 2 Agenda CWMP Functional Overview Why use CWMP for MFDs/Printers? Benefits of CWMP for MFDs/Printers Proposed Activities Collaboration Approach Status Review the Whitepaper Next Steps Supplement CWMP Functional Overview – more details
3Copyright © 2011 The Printer Working Group. All rights reserved. CWMP Functional Overview CWMP (CPE WAN Management Protocol) is a Broadband Forum standard (TR-069) that defines a set of WAN management interfaces between an Auto-configuration Server (ACS) and a collection of CWMP-enabled CPEs (Customer Premise Equipments). CWMP supports service contract based remote and secure management and provisioning of CPEs throughout their entire lifecycle – deployment, installation, management, and support. CWMP supported functionality via ACS includes: Auto-configuration and dynamic provisioning of CPEs and services Software/firmware image management Software module management Status and performance monitoring Diagnostics execution and reporting Standard interfaces to business applications (e.g. OSS/BSS/CRM), policy servers, call centers, etc. Strong security - transaction confidentiality and data integrity
4 Copyright © 2011 The Printer Working Group. All rights reserved. 4 CWMP Overview – contd Note 1: Above figure is copied verbatim from the BBF CWMP (TR-069) Note 2: CWMP-managed LAN on right could be a home, SOHO, SMB, or enterprise LAN CWMP in an End-to-End Management Architecture
5Copyright © 2011 The Printer Working Group. All rights reserved. CWMP Overview – contd Protocol message exchange: SOAP over HTTP 1.1 Security Mechanisms TLS 1.2 or higher is RECOMMENDED Alternative authentication using shared secrets via HTTP is also supported for lower security environments Data Model Data hierarchy Root object: Device – common objects (in TR-181) – components (in TR-143 & 157) – single Services object Each Service Object – objects - sub-objects - parameters Object Versioning – two integers (ObjectName:Major.Minor) Profiles – define conformance requirements for objects
6 Copyright © 2011 The Printer Working Group. All rights reserved. 6 CWMP Overview – contd An example CWMP protocol exchange sequence ACS initiates a short file download, and CPE sends a TransferComplete later in the same session This happens in parallel when CPE still performing on-going CWMP session - hence ACS needs to set HoldRequests to true until it has completed sending all requests to the CPE *Note: Figure 4 is copied verbatim from BBF TR-069.
In recent years the telecom industry and IT MSPs have migrated to using CWMP to remotely and securely manage and provision all kinds of devices in home, SOHO, SMB, and enterprise environments based on service contracts Routers, bridges, cable modems, DSL modems, and Internet/residential gateways, set-top boxes, IP phones, cell phones, storage devices, PCs and laptops, etc Having a standard CWMP data model for MFDs and imaging services is important – to ensure interoperability of all CWMP-based solutions across all MFD products Devices supporting CWMP-based management must implement: A set of standard interfaces between ACS and all CPEs CWMP device data model to expose device/service info to ACS 7 Copyright © 2011 The Printer Working Group. All rights reserved. 7 Why use CWMP for MFDs/Printers?
Enables Telecom and IT MSPs (Managed Service Providers) to include MFDs/printers into their service offerings. Enables MPS (Managed Print Service) providers to include mainstream IT devices into their service offerings. CWMP serves as a common protocol to simplify remote administration and problem resolution for both customers and service providers. Customer benefits since they are no longer locked into one vendor for their IT devices. Advanced remote management capabilities help reduce service dispatch and other customer support costs. 8 Copyright © 2011 The Printer Working Group. All rights reserved. 8 Benefits of CWMP for MFDs/Printers
Write a PWG whitepaper that: Provides rationale for developing a standard CWMP data model for MFDs and printers: use cases, technical requirements Proposes guidance for remote management of MFDs and printers via CWMP Proposes guidance for CWMP Proxy implementations that communicate with MFDs and printers using their native IPP, SNMP, and/or web services, e.g., PWG Scan Service Proposes a data model for MFDs and printers, with an XML definition, that is based on Broadband Forum Data Model Template for TR-069-Enabled-Devices (TR-106) A machine translation from the PWG Semantic Model BBF members (from PWG and others) should propose a new project, chartered by Broadband Forum (BBF), to develop the new standard CWMP data model for MFDs and printers (TR-xxx) 9 Copyright © 2011 The Printer Working Group. All rights reserved. 9 Proposed Activities
10 Copyright © 2011 The Printer Working Group. All rights reserved. 10 Collaboration Approach Interested PWG participants closely collaborate with Thinxtream team - Regular (weekly or bi-weekly) BOF calls at 9am US Eastern on Friday (to allow participation by Bangalore engineers) Regular whitepaper updates to document technical progress Architecture and pseudo-code for machine translation tool Current weekly teleconference participants – PWG: McDonald (Samsung), Nancy Chen (Oki Data) Others are welcome! Thinxtream team: Ranga Raj (CTO), Anil Takkar (Product Manager), Laxman Bhat, Subramanyan Krishnan, Nagaraj Ghatigar
11 Copyright © 2011 The Printer Working Group. All rights reserved. 11 Status PWG-Thinxtream team held teleconferences on Friday September 9, 16, 23 Initial whitepaper was reviewed on September 16, 23 Main use cases & deployment scenarios are mostly complete – thanks for lots of inputs from Thinxtream Developed an approach for converting PWG Semantic Model XML schema to CWMP data model for MFD: CWMP data models are XML documents that conform to BBF structural hierarchy (model, component, object, parameter) Parameters must use the BBF defined datatypes which are a restricted subset of XML standard datatypes PWG Semantic Model is XML schema that can use XML standard datatypes, with or without restrictions – CWMP changes: Choices need to be flattened to simple types Complex types need to be converted to objects/sub-objects
12 Copyright © 2011 The Printer Working Group. All rights reserved. 12 Status – contd Use Cases MFDs managed by telecom providers MFDs managed by MPS providers MFDs managed by enterprise IT staff Print Kiosks managed by telecom providers We will review the details of these use cases in the whitepaper today
13 Copyright © 2011 The Printer Working Group. All rights reserved. 13 Status – contd Current approach to converting the PWG SM XML data model to a BBF data model for MFDs – 1)Define translation rules for PWG complex datatypes and element groups 2)Machine-translate all PWG SM XML schema well known values and datatypes into control files for the tool 3)Machine-translate the entire PWG SM XML schema into the equivalent BBF model/object/sub-object/parameter statements, with BBF parameters mapped one-to-one from PWG SM simple XML elements. 4)Hand-edit machine-translated CWMP data model to fix artifacts and add XML documentation (e.g., PWG SM mapping notes) Thinxtream software team has graciously volunteered to develop a machine-translation tool Ira, Nancy, and perhaps others (?) to ensure the closest mapping from the PWG semantic model XML schema Any suggestion for a better approach?
14 Copyright © 2011 The Printer Working Group. All rights reserved. 14 Whitepaper Review Broadband Forum CWMP MFD Data Model: ftp://ftp.pwg.org/pub/pwg/BOFs/cwmp/white- cwmpmfd10-20110926.pdf
15 Copyright © 2011 The Printer Working Group. All rights reserved. 15 Discussion Is collaboration simply through weekly/bi-weekly teleconferences and PWG BOFs acceptable? If not, which PWG working group should host this project? MFD ? WIMS ?
16 Copyright © 2011 The Printer Working Group. All rights reserved. 16 Next Steps Continue weekly/bi-weekly teleconferences with PWG-Thinxtream team Review and update the whitepaper Report status in the next BOF at December face-to-face meeting
17 Copyright © 2011 The Printer Working Group. All rights reserved. 17 Supplements
18Copyright © 2011 The Printer Working Group. All rights reserved. CWMP Functionality Auto-configuration and Dynamic Service Provisioning At the time of CPE connection Re-provision and re-configure at subsequent time Asynchronous ACS-initiated re-provisioning Based on the requirements of a specific CPE or on collective criteria, e.g. vendor, model, software version, etc. Straightforward future extensions Software/firmware image management ACS initiated and optional CPE initiated download of img file Version identification Notification of download success/failure
19Copyright © 2011 The Printer Working Group. All rights reserved. CWMP Functionality – contd Software module management Install, update, uninstall software modules in CPE Notify ACS of success/failure Start and stop applications Enable/disable execution environment Inventory software modules available Status and performance monitoring CPEs make information available to ACS for monitoring ACS monitors CPEs status and performance statistics CPE actively notifies ACS of change to CPE state
20Copyright © 2011 The Printer Working Group. All rights reserved. CWMP Functionality – contd Diagnostics reporting CPEs make information available to ACS for diagnostics ACS diagnoses and resolves CPEs connectivity/service issues ACS instructs CPEs to execute defined diagnostic tests Standard interfaces to operational/business support systems, policy servers, and call centers for: Order fulfillment Billing Subscriber management Change management Manufacturer management Service level agreement management Performance analysis
21Copyright © 2011 The Printer Working Group. All rights reserved. CWMP Functionality – contd Protocol Stack Requirements *Note: Figure 2 above is copied verbatim from BBF CWMP (TR-069)
22Copyright © 2011 The Printer Working Group. All rights reserved. CWMP Functionality – contd Security Mechanisms Use TLS/1.2 for secure transport between CPE and ACS (RECOMMENDED) Provides transaction confidentiality, data integrity Supports certificate-based authentication of CPE and ACS Alternative authentication in HTTP layer between the CPE and ACS – based on shared secrets
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