1、有用的链接

Model Driven Network Automation with IOS-XE 

https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2018/pdf/LTRCRT-2700.pdf

Configure NETCONF/YANG and Validate Example for Cisco IOS XE 16.x Platforms

https://www.cisco.com/c/en/us/support/docs/storage-networking/management/200933-YANG-NETCONF-Configuration-Validation.html

Programmability Configuration Guide, Cisco IOS XE Everest 16.6.x

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/166/b_166_programmability_cg/configuring_yang_datamodel.html

yang-explorer

https://github.com/CiscoDevNet/yang-explorer

YangModels

https://github.com/YangModels

2、安装yang-explorer

准备：

  MAC、Linux（不支持windows)

  python 2.7

  pip软件管理器

  浏览器带flash plugin（推荐chrome）

//pip install --upgrade pip

//yum install python-virtualenv

//yum install graphviz

a、更改pip源

mkdir ~/.pip

vi ~/.pip/pip.conf

[global]

index-url = https://pypi.tuna.tsinghua.edu.cn/simple

[install]

trusted-host = mirrors.aliyun.com 

yum install python2-pip  python-virtualenv  graphviz      -y

依赖组件：

yum install  libxml2-devel libxslt-devel  python-devel zlib-devel gcc git  -y

git clone  https://github.com/CiscoDevNet/yang-explorer.git

b、安装

cd yang-explorer/

bash  setup.sh

省略。。。。。。。

Successfully built ydk-models-cisco-ios-xr

Installing collected packages: ydk-models-cisco-ios-xr

Successfully installed ydk-models-cisco-ios-xr-6.2.1

Installing dependencies .. done

Setting up initial database ..

Warning: Setting up database as root, this is not recommended.

Alternatively you can re-run this script as non-root

to setup database without root privilege.

Do you want to continue as root ? (n/N) y  //初始化数据库

Creating data directories ..

Creating database ..

Operations to perform:

  Synchronize unmigrated apps: staticfiles, messages, explorer

  Apply all migrations: admin, contenttypes, auth, sessions

Synchronizing apps without migrations:

  Creating tables...

    Creating table explorer_collection

    Creating table explorer_userprofile

    Creating table explorer_deviceprofile

    Running deferred SQL...

  Installing custom SQL...

Running migrations:

  Rendering model states... DONE

  Applying contenttypes.0001_initial... OK

  Applying auth.0001_initial... OK

  Applying admin.0001_initial... OK

  Applying contenttypes.0002_remove_content_type_name... OK

  Applying auth.0002_alter_permission_name_max_length... OK

  Applying auth.0003_alter_user_email_max_length... OK

  Applying auth.0004_alter_user_username_opts... OK

  Applying auth.0005_alter_user_last_login_null... OK

  Applying auth.0006_require_contenttypes_0002... OK

  Applying sessions.0001_initial... OK

Creating default users ..

Copying default models ..

Setup completed..

Use start.sh to start yang-explorer server

安装完成。

c、修改配置文件并运行yang-exporer

[root@desk yang-explorer]# cd server/static/

[root@desk static]# vi YangExplorer.html 

var swfVersionStr = "16.0.0";

            // To use express install, set to playerProductInstall.swf, otherwise the empty string.

            var xiSwfUrlStr = "expressInstall.swf";

            var flashvars = {};

            flashvars.host = '192.168.0.87';        //修改监听地址和端口

            flashvars.port = '8088';

[root@desk static]# cd ..

[root@desk server]# cd ..

[root@desk yang-explorer]# vi start.sh

#!/usr/bin/env bash

HOST='192.168.0.87'

PORT='8088'

# set timeout value for ncclient

export NCCLIENT_TIMEOUT=90

[root@desk yang-explorer]# ls

default-models  docs  env.sh  LICENSE  README.md  requirements.txt  server  setup.sh  start.sh  v  YangExplorer

[root@desk yang-explorer]# ./start.sh

Activating virtualenv ..

Starting YangExplorer server ..

Use http://192.168.0.87:8088/static/YangExplorer.html

Performing system checks...

System check identified no issues (0 silenced).

July 17, 2019 - 15:22:46

Django version 1.8.3, using settings 'server.settings'

Starting development server at http://192.168.0.87:8088/

Quit the server with CONTROL-C.

打开浏览器：

http://192.168.0.87:8088/static/YangExplorer.html

3、导入YangModels

点击Login

username：guest

password：guess

Subscript

4、配置XE路由器

XE3(config)#netconf-yang      //主要配置

Cisco-IOS-XE-native----->native --->interface --->GigabitEthernet          name 

                                                                                                      ip---->address-choice

检查

XE3#sh ip inter b

Interface              IP-Address      OK? Method Status                Protocol

GigabitEthernet1       192.168.0.29    YES DHCP   up                    up     

GigabitEthernet2      10.1.1.1        YES other  administratively down down   

GigabitEthernet3       unassigned      YES unset  administratively down down    

XE3#sh ip inter b

Interface              IP-Address      OK? Method Status                Protocol

GigabitEthernet1       192.168.0.29    YES DHCP   up                    up     

GigabitEthernet2       10.1.1.1        YES other  up                    up     

GigabitEthernet3       unassigned      YES unset  administratively down down 

产生python文件：

"""

    Netconf python example by yang-explorer (https://github.com/CiscoDevNet/yang-explorer)

    Installing python dependencies:

    > pip install lxml ncclient

    Running script: (save as example.py)

    > python example.py -a 192.168.0.29 -u yoyoo -p yoyoo123 --port 830         //执行python的方法

"""

import lxml.etree as ET

from argparse import ArgumentParser

from ncclient import manager

from ncclient.operations import RPCError

payload = """

        2

"""

if __name__ == '__main__':

    parser = ArgumentParser(description='Usage:')

    # script arguments

    parser.add_argument('-a', '--host', type=str, required=True,

                        help="Device IP address or Hostname")

    parser.add_argument('-u', '--username', type=str, required=True,

                        help="Device Username (netconf agent username)")

    parser.add_argument('-p', '--password', type=str, required=True,

                        help="Device Password (netconf agent password)")

    parser.add_argument('--port', type=int, default=830,

                        help="Netconf agent port")

    args = parser.parse_args()

    # connect to netconf agent

    with manager.connect(host=args.host,

                         port=args.port,

                         username=args.username,

                         password=args.password,

                         timeout=90,

                         hostkey_verify=False,

                         device_params={'name': 'csr'}) as m:

        # execute netconf operation

        try:

            response = m.edit_config(target='running', config=payload).xml

            data = ET.fromstring(response)

        except RPCError as e:

            data = e._raw

        # beautify output

        print(ET.tostring(data, pretty_print=True))