Solved: I need help on automating openconfig-vlan.yang module

balamani · ‎08-18-2017

Hi,

I am trying to automate "openconfig-vlan.yang" module using YDK. But i am getting error.

Below is the Script and command i used to run script "python test_vlan_config.py ssh://admin:admin@1.1.1.1:11111":

But similar script worked for cisco_ios_xr "Cisco_IOS_XR_cdp_cfg" module. for this module able create, read, write and delete.

from ydk.services import CRUDService

from ydk.providers import NetconfServiceProvider

from ydk.models.openconfig import openconfig_vlan

import logging

from argparse import ArgumentParser

from urlparse import urlparse

def config_vlan(vlan_conf):

vlan_conf.name = "VLAN100"
   vlan_conf.status = "ACTIVE"
   vlan_conf.vlan_id = 1555
   print("*****************After Setting************")

print(vlan_conf.name)

print(vlan_conf.status)

print(vlan_conf.vlan_id)

print(vlan_conf)

def test1_vlans_func():

if __name__ == "__main__":

"""Execute main program."""
parser = ArgumentParser()

parser.add_argument("-v", "--verbose", help="print debugging messages",

action="store_true")

parser.add_argument("device",

help="NETCONF device (ssh://user:password@host:port)")

args = parser.parse_args()

device = urlparse(args.device)

# log debug messages if verbose argument specified
if args.verbose:

logger = logging.getLogger("ydk")

logger.setLevel(logging.DEBUG)

handler = logging.StreamHandler()

formatter = logging.Formatter(("%(asctime)s - %(name)s - "
"%(levelname)s - %(message)s"))

handler.setFormatter(formatter)

logger.addHandler(handler)

# create NETCONF session
provider = NetconfServiceProvider(address="1.1.1.1",

port=11111,

username="admin",

password="admin",

protocol="ssh")

# create CRUD service
crud = CRUDService()

# create vlnas configobject
vlan_conf = openconfig_vlan.Vlans.Vlan.Config()

print("###Before setting####")

print(vlan_conf)

# print system uptime
config_vlan(vlan_conf)

print("####After returning from the function#######")

print(vlan_conf)

# create CRUD service
crud.create(provider, vlan_conf)

print("####After creating crud service#######")

print(vlan_conf)

# close NETCONF session and exit
provider.close()

exit()

# End of script

test1_vlans_func()

Error Output:

###Before setting####

<ydk.models.openconfig.openconfig_vlan.Config object at 0x7fa1fa508590>

*****************After Setting************

VLAN100

ACTIVE

1555

<ydk.models.openconfig.openconfig_vlan.Config object at 0x7fa1fa508590>

####After returning from the function#######

<ydk.models.openconfig.openconfig_vlan.Config object at 0x7fa1fa508590>

Traceback (most recent call last):

File "test_vlan_config.py", line 90, in <module>

test1_vlans_func()

File "test_vlan_config.py", line 81, in test1_vlans_func

crud.create(provider, vlan_conf)

File "/usr/local/lib/python2.7/dist-packages/ydk/services/crud_service.py", line 62, in create

self._execute_crud_operation_on_provider(provider, entity, 'CREATE', False)

File "/usr/local/lib/python2.7/dist-packages/ydk/services/crud_service.py", line 166, in _execute_crud_operation_on_provider

only_config

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/netconf_provider.py", line 88, in encode

return self.sp_instance.encode(entity, operation, only_config)

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/_provider_plugin.py", line 112, in encode

root = self._encode_edit_request(root, entity, operation)

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/_provider_plugin.py", line 432, in _encode_edit_request

root = self._create_preamble(entity, root)

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/_provider_plugin.py", line 494, in _create_preamble

parent_meta_tuple_list = self._get_parent_tuple_list(entity, entity._meta_info())

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/_provider_plugin.py", line 590, in _get_parent_tuple_list

self._raise_parent_hierarchy_error()

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/_provider_plugin.py", line 520, in _raise_parent_hierarchy_error

raise YPYServiceProviderError(error_code=YPYErrorCode.INVALID_HIERARCHY_PARENT)

ydk.errors.YPYServiceProviderError: Parent is not set. Parent Hierarchy cannot be determined

I am completely new to YDK and data model automation. also I don't understand in detail about create and delete operation. Please help me on this.

Below are the details of YDK.

vagrant@ydk-py:test_openconfig_vlan$ pip list | grep ydk

ydk 0.5.4

ydk-models-cisco-ios-xr 6.2.1

ydk-models-ietf 0.1.1

ydk-models-openconfig 0.1.2

vagrant@ydk-py:test_openconfig_vlan$

Thanks & Regards,

Basavaraj

Message was edited by: Basavaraj Lamani

einarnn · ‎08-21-2017

Basavaraj,

You also need to consider the content of the file cisco-xr-openconfig-vlan-deviations.yang when determining exactly what is supported:

https://github.com/YangModels/yang/blob/master/vendor/cisco/xr/622/cisco-xr-openconfig-vlan-deviations.yang

Cheers,

Einar

View solution in original post

balamani · ‎08-18-2017

I modified the script and now i am getting different error. Please help.

from ydk.services import CRUDService

from ydk.providers import NetconfServiceProvider

from ydk.models.openconfig import openconfig_vlan

import logging

from argparse import ArgumentParser

from urlparse import urlparse

def config_vlan(vlan_conf):

vlan_conf.Vlan.Config.name = "VLAN100"
   vlan_conf.Vlan.Config.status = "ACTIVE"
   vlan_conf.Vlan.Config.vlan_id = 1555
   print("*****************After Setting************")

print(vlan_conf.Vlan.Config.name)

print(vlan_conf.Vlan.Config.status)

print(vlan_conf.Vlan.Config.vlan_id)

print(vlan_conf)

def test1_vlans_func():

if __name__ == "__main__":

"""Execute main program."""
parser = ArgumentParser()

parser.add_argument("-v", "--verbose", help="print debugging messages",

action="store_true")

parser.add_argument("device",

help="NETCONF device (ssh://user:password@host:port)")

args = parser.parse_args()

device = urlparse(args.device)

# log debug messages if verbose argument specified
if args.verbose:

logger = logging.getLogger("ydk")

logger.setLevel(logging.DEBUG)

handler = logging.StreamHandler()

formatter = logging.Formatter(("%(asctime)s - %(name)s - "
"%(levelname)s - %(message)s"))

handler.setFormatter(formatter)

logger.addHandler(handler)

# create NETCONF session
provider = NetconfServiceProvider(address="1.1.1.1",

port=11111,

username="admin",

password="admin",

protocol="ssh")

# create CRUD service
crud = CRUDService()

# create vlnas configobject
#vlan_conf = openconfig_vlan.Vlans.Vlan.Config()
vlan_conf = openconfig_vlan.Vlans()

print("###Before setting####")

print(vlan_conf)

# print system uptime
config_vlan(vlan_conf)

print("####After returning from the function#######")

print(vlan_conf)

# create CRUD service
crud.create(provider, vlan_conf)

print("####After creating crud service#######")

print(vlan_conf)

# close NETCONF session and exit
provider.close()

exit()

# End of script

test1_vlans_func()

########error output###:

vagrant@ydk-py:test_openconfig_vlan$ python test_vlan_config.py ssh://admin:admin@1.1.1.1:11111 -v

2017-08-18 05:25:51,013 - ydk.providers.netconf_provider - INFO - NetconfServiceProvider connected to 10.85.104.17:20083 using ssh

###Before setting####

<ydk.models.openconfig.openconfig_vlan.Vlans object at 0x7f71a1726650>

*****************After Setting************

VLAN100

ACTIVE

1555

<ydk.models.openconfig.openconfig_vlan.Vlans object at 0x7f71a1726650>

####After returning from the function#######

<ydk.models.openconfig.openconfig_vlan.Vlans object at 0x7f71a1726650>

2017-08-18 05:25:51,020 - ydk.services.crud_service - INFO - CREATE operation initiated

2017-08-18 05:25:51,022 - ydk.providers._provider_plugin - DEBUG -

<edit-config>

</target>

</config>

</edit-config>

</rpc>

2017-08-18 05:25:51,449 - ydk.providers._provider_plugin - DEBUG -

<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="urn:uuid:2021e2b8-5342-49ab-8321-56d5a84dbb64">

<rpc-error>

<error-type>protocol</error-type>

<error-tag>unknown-namespace</error-tag>

<error-severity>error</error-severity>

<error-info>

<bad-element>vlans</bad-element>

<bad-namespace>http://openconfig.net/yang/vlan</bad-namespace>

</error-info>

</rpc-error>

</rpc-reply>

2017-08-18 05:25:51,453 - ydk.providers._provider_plugin - ERROR -

<edit-config>

</target>

</config>

</edit-config>

</rpc>

<?xml version="1.0"?>

<rpc-reply message-id="urn:uuid:2021e2b8-5342-49ab-8321-56d5a84dbb64" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">

<rpc-error>

<error-type>protocol</error-type>

<error-tag>unknown-namespace</error-tag>

<error-severity>error</error-severity>

<error-info>

<bad-element>vlans</bad-element>

<bad-namespace>http://openconfig.net/yang/vlan</bad-namespace>

</error-info>

</rpc-error>

</rpc-reply>

2017-08-18 05:25:51,456 - ydk.services.crud_service - INFO - CREATE operation completed

Traceback (most recent call last):

File "test_vlan_config.py", line 91, in <module>

test1_vlans_func()

File "test_vlan_config.py", line 82, in test1_vlans_func

crud.create(provider, vlan_conf)

File "/usr/local/lib/python2.7/dist-packages/ydk/services/crud_service.py", line 62, in create

self._execute_crud_operation_on_provider(provider, entity, 'CREATE', False)

File "/usr/local/lib/python2.7/dist-packages/ydk/services/crud_service.py", line 168, in _execute_crud_operation_on_provider

operation

File "/usr/local/lib/python2.7/dist-packages/ydk/services/service.py", line 36, in execute_payload

reply = provider.execute(payload, operation)

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/netconf_provider.py", line 94, in execute

return self.sp_instance.execute_operation(payload, operation)

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/_provider_plugin.py", line 224, in execute_operation

return self._handle_rpc_reply(operation, payload, reply.xml)

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/_provider_plugin.py", line 246, in _handle_rpc_reply

self._handle_rpc_error(payload, reply_str, pathlist)

File "/usr/local/lib/python2.7/dist-packages/ydk/providers/_provider_plugin.py", line 259, in _handle_rpc_error

raise YPYServiceProviderError(error_code=YPYErrorCode.SERVER_REJ, error_msg=reply_str)

ydk.errors.YPYServiceProviderError: Server rejected request.

error-type: protocol

error-tag: unknown-namespace

error-severity: error

bad-element: vlans

bad-namespace: http://openconfig.net/yang/vlan

vagrant@ydk-py:test_openconfig_vlan$

abhirame · ‎08-18-2017

From the first error, looks like there was an issue with your script as you were not correctly populating the list. Can you try something like the below?

def config_vlan(vlan_conf):
  vlan = openconfig_vlan.Vlan()
  vlan.vlan_id = 1555
  vlan.config.vlan_id = 1555
  vlan.config.name = "VLAN100"
  vlan.config.status = "ACTIVE"
  vlans.vlan.append(vlan)

# create vlans configobject
vlan_conf = openconfig_vlan.Vlans()
config_vlan(vlan_conf)

For the second error, looks like the device you are connecting to does not support the openconfig-vlan model.

balamani · ‎08-21-2017

Hi Abhirame,

Thanks for your input.

As per your suggestion i made changes but still i am getting 2nd error.

Also i checked in router whether "openconfig-vlan.yang" module supported or not by giving below commands on router.

1) "run" command

2) "cd /pkg/yang" command. This command lists all the available modules and i can see "openconfig-vlan.yang" module.

Please let me know is this correct procedure to check supported modules on router. Also let me know if i need to make any further changes in my script.

einarnn · ‎08-21-2017

Basavaraj,

You also need to consider the content of the file cisco-xr-openconfig-vlan-deviations.yang when determining exactly what is supported:

https://github.com/YangModels/yang/blob/master/vendor/cisco/xr/622/cisco-xr-openconfig-vlan-deviations.yang

Cheers,

Einar