{"id":1152,"date":"2017-11-03T03:00:00","date_gmt":"2017-11-03T03:00:00","guid":{"rendered":"https:\/\/fir3netwp.gmsrrpobkbd.com\/2017\/11\/03\/python-how-to-obtain-the-configuration-of-a-networking-device-using-netconf\/"},"modified":"2023-02-24T08:56:03","modified_gmt":"2023-02-24T08:56:03","slug":"python-how-to-obtain-the-configuration-of-a-networking-device-using-netconf","status":"publish","type":"post","link":"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html","title":{"rendered":"Python: Obtain Network Device Configuration using NETCONF"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-662650f714c68\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-662650f714c68\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html\/#Introduction\" title=\"Introduction\">Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html\/#What_is_NETCONF\" title=\"What is NETCONF\">What is NETCONF<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html\/#Dependencies\" title=\"Dependencies\">Dependencies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html\/#Connect\" title=\"Connect\">Connect<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html\/#Get_Capabilities\" title=\"Get Capabilities\">Get Capabilities<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html\/#Get_Configuration\" title=\"Get Configuration\">Get Configuration<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html\/#JSON\" title=\"JSON\">JSON<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html\/#Close_Session\" title=\"Close Session\">Close Session<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Within this article we will look at how to interact with a networking device (Cisco CSR) using the NETCONF protocol. To do so, we will use the Python module &#8211; <span class=\"codeinline\">ncclient<\/span>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_NETCONF\"><\/span>What is NETCONF<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>First of all, What is NETCONF?<\/p>\n<p class=\"quote\">NETCONF (NETwork CONFiguration) is a protocol defined by the IETF to &#8220;install, manipulate, and delete the configuration of network devices&#8221;.<br \/>\n&#8211;\u00a0<a href=\"http:\/\/www.tail-f.com\" class=\"broken_link\">www.tail-f.com<\/a><\/p>\n<p>Further details can be found within our previous article &#8211;\u00a0<a href=\"\/Networking\/Protocols\/an-introduction-to-netconf-yang.html#ftnt4\">An Introduction to NETCONF\/YANG<\/a>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dependencies\"><\/span>Dependencies<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>First of all we will need to install some Python dependencies,<\/p>\n<pre class=\"prettyprint\">pip install ncclient pyang pyangbind xmltodict<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Connect\"><\/span>Connect<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Now that we have the required packages installed we can connect to the device. Like so,<\/p>\n<pre class=\"prettyprint\">from ncclient import manager\r\n\r\nm = manager.connect(host='10.29.1.133', port=830, username='cisco',\r\n                    password='cisco', device_params={'name': 'csr'})\r\n\r\nprint m.connected\r\n\r\n...\r\n\r\nTrue<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Get_Capabilities\"><\/span>Get Capabilities<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In order to obtain the devices capabilities we can use the method <span class=\"codeinline\">server_capabilities<\/span>.<\/p>\n<pre class=\"prettyprint\">for c in m.server_capabilities:\r\n    print c\r\n\r\n...\r\n\r\nurn:ietf:params:xml:ns:yang:smiv2:SNMP-FRAMEWORK-MIB?module=SNMP-FRAMEWORK-MIB&amp;revision=2002-10-14\r\n\r\nurn:ietf:params:xml:ns:yang:cisco-policy-target?module=cisco-policy-target&amp;revision=2016-03-30\r\nurn:ietf:params:xml:ns:yang:smiv2:CISCO-CBP-TARGET-TC-MIB?module=CISCO-CBP-TARGET-TC-MIB&amp;revision=2006-03-24\r\nurn:ietf:params:netconf:capability:notification:1.0<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Get_Configuration\"><\/span>Get Configuration<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To fetch the running configuration of the device you can simply run,<\/p>\n<pre class=\"prettyprint\">running_config = m.get_config('running')<\/pre>\n<p>This will provide us with the variable <span class=\"codeinline\">running_config<\/span> containing the configuration within an XML data type. Lets pretty print the XML,<\/p>\n<pre id=\"quine\" class=\"prettyprint\"><code>import xmltodict\r\nimport xml.dom.minidom\r\n\r\nprint(xml.dom.minidom.parseString(str(running_config)).toprettyxml())\r\n\r\n...\r\n\r\n&lt;rpc-reply message-id=\"urn:uuid:01290b52-a324-454b-b754-f8513b0d3b0d\" xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\" xmlns:nc=\"urn:ietf:params:xml:ns:netconf:base:1.0\"&gt;\r\n        &lt;data&gt;\r\n                &lt;native xmlns=\"<a class=\"vglnk\" href=\"http:\/\/cisco.com\/ns\/yang\/Cisco-IOS-XE-native\" rel=\"nofollow\">http:\/\/cisco.com\/ns\/yang\/Cisco-IOS-XE-native<\/a>\"&gt;\r\n                        &lt;version&gt;16.5&lt;\/version&gt;\r\n                        &lt;boot-start-marker&gt;&lt;\/boot-start-marker&gt;\r\n                        &lt;boot-end-marker&gt;&lt;\/boot-end-marker&gt;\r\n                        &lt;service&gt;\r\n                                &lt;timestamps&gt;\r\n                                        &lt;debug&gt;\r\n                                                &lt;datetime&gt;\r\n                                                        &lt;msec&gt;&lt;\/msec&gt;\r\n                                                &lt;\/datetime&gt;\r\n                                        &lt;\/debug&gt;\r\n                                        &lt;log&gt;\r\n                                                &lt;datetime&gt;\r\n                                                        &lt;msec&gt;&lt;\/msec&gt;\r\n                                                &lt;\/datetime&gt;\r\n                                        &lt;\/log&gt;\r\n                                &lt;\/timestamps&gt;\r\n                        &lt;\/service&gt;\r\n                        &lt;platform&gt;\r\n                                &lt;console xmlns=\"<a class=\"vglnk\" href=\"http:\/\/cisco.com\/ns\/yang\/Cisco-IOS-XE-platform\" rel=\"nofollow\">http:\/\/cisco.com\/ns\/yang\/Cisco-IOS-XE-platform<\/a>\"&gt;\r\n                                        &lt;output&gt;serial&lt;\/output&gt;\r\n                                &lt;\/console&gt;\r\n                        &lt;\/platform&gt;\r\n                        &lt;hostname&gt;csr1000v-1&lt;\/hostname&gt;\r\n                        &lt;enable&gt;\r\n                                &lt;password&gt;\r\n                                        &lt;secret&gt;cisco&lt;\/secret&gt;\r\n                                &lt;\/password&gt;\r\n...<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"JSON\"><\/span>JSON<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In addition we can also interact with the configuration by parsing our <span class=\"codeinline\">running_config<\/span> variable into a <span class=\"codeinline\">dict()<\/span>.<\/p>\n<pre class=\"prettyprint\">conf_json = xmltodict.parse(str(running_config))\r\nconf_json['rpc-reply'][\"data\"][\"native\"][\"hostname\"]\r\n\r\n...\r\n\r\nu'csr1000v'<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Close_Session\"><\/span>Close Session<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Finally, once all of the necessary operations have been completed we close the session.<\/p>\n<pre class=\"prettyprint prettyprinted\"><span class=\"pln\">m<\/span><span class=\"pun\">.<\/span><span class=\"pln\">close_session<\/span><span class=\"pun\">()<\/span>\r\n\r\n<span class=\"pun\">...<\/span>\r\n\r\n<span class=\"pun\">&lt;<\/span><span class=\"pln\">rpc<\/span><span class=\"pun\">-<\/span><span class=\"pln\">reply xmlns<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"urn:ietf:params:xml:ns:netconf:base:1.0\"<\/span><span class=\"pln\"> message<\/span><span class=\"pun\">-<\/span><span class=\"pln\">id<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"urn:uuid:ebb48b66-185e-4\r\n7ac-9820-73418ed0790f\"<\/span><span class=\"pln\"> xmlns<\/span><span class=\"pun\">:<\/span><span class=\"pln\">nc<\/span><span class=\"pun\">=<\/span><span class=\"str\">\"urn:ietf:params:xml:ns:netconf:base:1.0\"<\/span><span class=\"pun\">&gt;&lt;<\/span><span class=\"pln\">ok<\/span><span class=\"pun\">&gt;&lt;<\/span><span class=\"str\">\/ok&gt;&lt;\/<\/span><span class=\"pln\">rpc<\/span><span class=\"pun\">-<\/span><span class=\"pln\">reply<\/span><span class=\"pun\">&gt;<\/span><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Introduction Within this article we will look at how to interact with a networking device (Cisco CSR) using the NETCONF protocol. To do so, we will use the Python module &#8211; ncclient. What is NETCONF First of all, What is NETCONF? NETCONF (NETwork CONFiguration) is a protocol defined by the IETF to &#8220;install, manipulate, and &#8230; <a title=\"Python: Obtain Network Device Configuration using NETCONF\" class=\"read-more\" href=\"https:\/\/www.fir3net.com\/Networking\/Protocols\/how-to-operate-a-device-using-netconf-and-python.html\" aria-label=\"Read more about Python: Obtain Network Device Configuration using NETCONF\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":1043,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1266],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python: Obtain Network Device Configuration using NETCONF<\/title>\n<meta name=\"description\" content=\"Introduction Within this article we will look at how to interact with a networking device (Cisco CSR) using the NETCONF protocol. 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