NETCONF, YANG, RESTCONF - Cisco
[Pages:34]NETCONF, YANG, RESTCONF
TECH-SDN-SP: Software Defined Networking for Service Providers
Martin Kramolis, Systems Engineer, CCIE #4738
Agenda
? Brief Overview of XML ? Introduction to NETCONF ? Introduction to YANG ? Introduction to RESTCONF
TECH-SDN-SP-NETCONF-YANG-RESTCONF
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3
Brief Overview of XML
What is XML?
?eXtensible Markup Language ?A language to describe data ?Useful for serialization and data classification ?Not a complete programming language or database ?Compare to [traditional] HTML
? XML: describe data, case-sensitive (similar to: JSON, YAML) ? HTML: display data, case-insensitive (similar to: TeX, troff)
TECH-SDN-SP-NETCONF-YANG-RESTCONF
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5
Sample XML Data
Thomas Alva Edison Inventor and businessman
TECH-SDN-SP-NETCONF-YANG-RESTCONF
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XML Prolog
? version ? Currently, only 1.0 is valid (mandatory) ? encoding ? Character set of the data to follow (optional, UTF-8 is default) ? standalone ? yes if no external DTD is required, no otherwise (optional, no is
default)
TECH-SDN-SP-NETCONF-YANG-RESTCONF
Cisco and/or its affiliates. All rights reserved.
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XML Elements
? XML tags are called elements ? Data between start and end tags are the element's content ? Element content, including white space are character data where as tags are
markup ? All elements must have start and end tags
Inventor and businessman
? Attributes can further describe elements
? Empty elements can simply end with a "/>"
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