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67th IETF meeting netconf WG Experience of implementing NETCONF over SOAP (draft-iijima-netconf-soap-implementation-01) Monday, November 6, 2006 Tomoyuki Iijima, Kunihiko Toumura, Hideki Okita (Hitachi Central Research Lab) Yoshifumi Atarashi, Hiroyasu Kimura (Alaxala Networks) All Rights Reserved Copyright © 2005,Hitachi.Ltd. -2- Objective • Develop a network management system based on NETCONF over SOAP • Provide guideline of implementing NETCONF over SOAP as an informational I-D All Rights Reserved Copyright © 2006,Hitachi.Ltd. -3- Advantage of using SOAP • Inside the framework of Web Service, peripheral technologies around SOAP/HTTP are well developed • Development tools related to XML (Web Service) are abundant, such as Eclipse – It’s easy to deal with specification changes Security XML Reliable Message Transaction Search (UDDI) (XML encryption, Language XML signature, WS-Security,,,) (WS-Reliability) (WS-Transaction,,,) (WSDL) Fundamental Messaging (SOAP, SOAP with Attachment,,,) API (JAXM, JAXRPC, .NET,,,) Transport Protocol (HTTP, HTTPS, HTTPR, SMTP, MQ,,,) All Rights Reserved Copyright © 2006,Hitachi.Ltd. -4- Advantage of WSDL • WSDL is the key technology of Web Service • Generated automatically from API using middleware such as Apache Axis, .NET or IBM WSDK (WebSphere SDK) – “Java2wsdl” command of Apache Axis – “ASP.NET Web service” of Visual Studio – WSDL generated in one environment (ex. Java) is used under another environment (ex. .NET, P-Languages (PHP, Perl, Python, …), Ruby) • Generates API automatically using middleware such as Apache Axis, .NET or IBM WSDK (WebSphere SDK) – – – – “wsdl2java” command of Apache Axis “Add Web Reference” of Visual Studio Unnecessary to write the part of SOAP RPC by ourselves Developer’s workload is dramatically reduced All Rights Reserved Copyright © 2006,Hitachi.Ltd. Architecture of NETCONF over SOAP • • -5- NMS We used Apache Axis as a SOAP client implementation We developed network configuration API using Java NMS Application Network configuration API (Java class file) – VLAN, Filter, … – Java seemed to be the easiest since it is matured • • • We developed SOAP server implementation using C We developed NETCONF daemon using C NETCONF device exhibits its configuration I/F – Methods by WSDL file • editconfig(), getconfig(), get(), lock(), … – Datamodels by XSD file • interface, vlan, ip, ... SOAP client implementation (Apache Axis, .NET,,,) Java2WSDL WSDL2Java Rpc-request /SOAP Rpc-reply /SOAP SOAP server implementation NETCONF daemon .wsdl .xsd Network Equipment All Rights Reserved Copyright © 2006,Hitachi.Ltd. -6- Conclusions • Web Service and WSDL is a decisive factor of our SOAP based implementation • Apache Axis is useful not only as a SOAP middleware but also as a development tool – Unnecessary to write SOAP RPC by ourselves – Both Java class files and WSDL files are automatically generated • In this I-D, we are willing to share the knowledge gained from the development of a SOAP based network management system and keep on writing this informational I-D. All Rights Reserved Copyright © 2006,Hitachi.Ltd. xsd file -7- All Rights Reserved Copyright © 2006,Hitachi.Ltd. WSDL file -8- All Rights Reserved Copyright © 2006,Hitachi.Ltd.