You may wonder how you can create a loopback interface using the OpenConfig Interface model. Here's how:
#!/usr/bin/env python
#
# Copyright 2016 Cisco Systems, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""
Create configuration for model openconfig-interfaces.
usage: nc-create-oc-interfaces-20-ydk.py [-h] [-v] device
positional arguments:
device NETCONF device (ssh://user:password@host:port)
optional arguments:
-h, --help show this help message and exit
-v, --verbose print debugging messages
"""
from argparse import ArgumentParser
from urlparse import urlparse
from ydk.services import CRUDService
from ydk.providers import NetconfServiceProvider
from ydk.models.openconfig import openconfig_interfaces \
as oc_interfaces
from ydk.models.ietf import iana_if_type
import logging
def config_interfaces(interfaces):
"""Add config data to interfaces object."""
# configure loopback interface
interface = interfaces.Interface()
interface.name = "Loopback0"
interface.config.name = "Loopback0"
interface.config.type = iana_if_type.SoftwareLoopback()
interface.config.description = "My new loopback interface :-)"
interface.config.enabled = True
interfaces.interface.append(interface)
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.INFO)
handler = logging.StreamHandler()
formatter = logging.Formatter(("%(asctime)s - %(name)s - "
"%(levelname)s - %(message)s"))
handler.setFormatter(formatter)
logger.addHandler(handler)
# create NETCONF provider
provider = NetconfServiceProvider(address=device.hostname,
port=device.port,
username=device.username,
password=device.password,
protocol=device.scheme)
# create CRUD service
crud = CRUDService()
interfaces = oc_interfaces.Interfaces()
config_interfaces(interfaces) # add object configuration
# create configuration on NETCONF device
crud.create(provider, interfaces)
exit()
# End of script
Log:
$ ./nc-create-oc-interfaces-20-ydk.py ssh://user:password@host -v
2020-02-18 19:33:24,486 - ydk - INFO - Path where models are to be downloaded: /home/saalvare/.ydk/pavarotti
2020-02-18 19:33:24,494 - ydk - INFO - Connected to pavarotti on port 830 using ssh with timeout of -1
2020-02-18 19:33:24,506 - ydk - INFO - Executing CRUD create operation on [openconfig-interfaces:interfaces]
2020-02-18 19:33:24,506 - ydk - INFO - Executing 'edit-config' RPC on [openconfig-interfaces:interfaces]
2020-02-18 19:33:24,518 - ydk - INFO - ============= Sending RPC to device =============
<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"><edit-config xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<target>
<candidate/>
</target>
<config><interfaces xmlns="http://openconfig.net/yang/interfaces" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" nc:operation="merge">
<interface>
<name>Loopback0</name>
<config>
<type xmlns:ianaift="urn:ietf:params:xml:ns:yang:iana-if-type">ianaift:softwareLoopback</type>
<name>Loopback0</name>
<description>My new loopback interface :-)</description>
<enabled>true</enabled>
</config>
</interface>
</interfaces>
</config>
</edit-config>
</rpc>
2020-02-18 19:33:24,823 - ydk - INFO - ============= Received RPC from device =============
<?xml version="1.0"?>
<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="1">
<ok/>
</rpc-reply>
2020-02-18 19:33:24,823 - ydk - INFO - Executing 'commit' RPC
2020-02-18 19:33:24,823 - ydk - INFO - ============= Sending RPC to device =============
<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"><commit xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"/>
</rpc>
2020-02-18 19:33:25,822 - ydk - INFO - ============= Received RPC from device =============
<?xml version="1.0"?>
<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="2">
<ok/>
</rpc-reply>
2020-02-18 19:33:25,822 - ydk - INFO - Operation succeeded
2020-02-18 19:33:25,832 - ydk - INFO - Disconnected from device
$
