hi, i follow the step on cisco learning labs Cisco DevNet Learning Labs to active the NETCONF on NX-OS. and its successful.
this is my output of getting list of YANG Files.
root@client:/python# ssh -p 830 admin@10.200.200.19 -s netconf
User Access Verification
Password:
<?xml version="1.0" encoding="UTF-8"?>
<hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<capabilities>
<capability>urn:ietf:params:netconf:base:1.0</capability>
<capability>urn:ietf:params:netconf:base:1.1</capability>
<capability>urn:ietf:params:netconf:capability:writable-running:1.0</capability>
<capability>urn:ietf:params:netconf:capability:rollback-on-error:1.0</capability>
<capability>http://openconfig.net/yang/interfaces?revision=2016-05-26&module=openconfig-interfaces</capability>
<capability>http://openconfig.net/yang/interfaces/ip?revision=2016-05-26&module=openconfig-if-ip</capability>
<capability>http://openconfig.net/yang/local-routing?revision=2016-05-11&module=openconfig-local-routing</capability>
<capability>http://openconfig.net/yang/vlan?revision=2016-05-26&module=openconfig-vlan</capability>
<capability>http://www.cisco.com/yang/nxos-dev/top?revision=2017-02-17&module=top</capability>
</capabilities>
<session-id>227117149</session-id>
</hello>
]]>]]>
and this is my python files to get all the list, its working
from ncclient import manager
def get_capabilities(host, port, user, pwd):
with manager.connect(host=host, port=port, username=user, password=pwd, hostkey_verify=False, device_params={'name': 'nexus'}) as m:
capabilities = m.server_capabilities
return capabilities
def print_capabilities(c):
file = open ("capability-nx-os.txt","w")
for line in c:
file.writelines(line+"\n")
x = get_capabilities ("10.200.200.19","830","admin","Tanjung814")
a = print_capabilities(x)
but when i try to get the YANG Files directly from the NX-OS devices, its cannot. this is my python files.
from ncclient import manager
import xml.etree.ElementTree as ET
m = manager.connect(host='10.200.200.19', port=830, username='admin',
password='Tanjung814', device_params={'name': 'nexus'})
schema = m.get_schema('openconfig-vlan')
xml_et = ET.fromstring(schema.xml)
yang = list(xml_et)[0].text
with open('openconfig-vlan.yang', 'w') as f:
f.write(yang)
when running the files.
root@client:/python/nx-os# python getyang.py
Traceback (most recent call last):
File "getyang.py", line 8, in <module>
schema = m.get_schema('openconfig-vlan')
File "/usr/local/lib/python2.7/dist-packages/ncclient/manager.py", line 162, in wrapper
return self.execute(op_cls, *args, **kwds)
File "/usr/local/lib/python2.7/dist-packages/ncclient/manager.py", line 232, in execute
raise_mode=self._raise_mode).request(*args, **kwds)
File "/usr/local/lib/python2.7/dist-packages/ncclient/operations/retrieve.py", line 129, in request
return self._request(node)
File "/usr/local/lib/python2.7/dist-packages/ncclient/operations/rpc.py", line 337, in _request
raise self._reply.error
ncclient.operations.rpc.RPCError: Invalid or unsupported operation tag
root@client:/python/nx-os#
this error happen to when i try to connect NX-OS directly to OpenDayLight. the ODL cant download the YANG Files store in the NX-OS to the OpenDayLight cache/scheme folder. i try on SR1000V this script working. i dont know why this error on NX-OS. thanks 
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