ERROR - Data is invalid according to the yang model when configuration openconfig bgp and ios-xr

jaime botello — Wed, 06 Mar 2019 21:31:44 GMT

Hi,

I'm been trying to figure out why I'm getting the following error.

:python -u /opt/project/bgp_oc_gnmi_create.py -v -i pr04.lab01 -g 57777 -u user -p password-y /opt/project/yang/vendor/cisco/xr/651
2019-03-06 19:15:47,367 - ydk - ERROR - Data is invalid according to the yang model. Libyang error: Invalid value "198.168.1.2" in "neighbor-address" element. Path: '/openconfig-network-instance:network-instances/network-instance[name='default']/protocols/protocol[identifier='openconfig-policy-types:BGP'][name='default']/bgp/neighbors/neighbor[neighbor-address='198.168.1.2']/neighbor-address'
Traceback (most recent call last):
File "/opt/project/bgp_oc_gnmi_create.py", line 121, in <module>
crud.create(provider, bgp_ni)
File "/usr/local/lib/python2.7/dist-packages/ydk/errors/error_handler.py", line 112, in helper
return func(self, provider, entity, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/ydk/services/crud_service.py", line 49, in create
return self._crud.create(provider, entity)
File "/usr/lib/python2.7/contextlib.py", line 35, in __exit__
self.gen.throw(type, value, traceback)
File "/usr/local/lib/python2.7/dist-packages/ydk/errors/error_handler.py", line 82, in handle_runtime_error
_raise(_exc)
File "/usr/local/lib/python2.7/dist-packages/ydk/errors/error_handler.py", line 56, in _raise
raise exc
ydk.errors.YModelError: Invalid value "198.168.1.2" in "neighbor-address" element. Path: /openconfig-network-instance:network-instances/network-instance[name='default']/protocols/protocol[identifier='openconfig-policy-types:BGP'][name='default']/bgp/neighbors/neighbor[neighbor-address='198.168.1.2']/neighbor-address
2019-03-06 19:15:47,376 - ydk - INFO - Disconnected from device

What it seems, I'm building the path incorrectly but based on the yang model, I don't know what I'm missing.

 Wed Mar 6 21:20:27.629 UTC
Cisco IOS XR Software, Version 6.5.1
Copyright (c) 2013-2018 by Cisco Systems, Inc.

Build Information:
Built By : ahoang
Built On : Wed Aug 8 17:10:43 PDT 2018
Built Host : iox-ucs-025
Workspace : /auto/srcarchive17/prod/6.5.1/ncs5500/ws
Version : 6.5.1
Location : /opt/cisco/XR/packages/

cisco NCS-5500 () processor
System uptime is 5 weeks 6 days 20 hours 4 minutes

This is the code i'm trying to get it to work, basically the idea is to push bgp peer/config into a lab device.

#!/usr/bin/env python
#
# Copyright 2019 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.
#
import logging
import os
from argparse import ArgumentParser
from ydk.gnmi.providers import gNMIServiceProvider
from ydk.path import Repository
from ydk.models.openconfig import openconfig_network_instance as oc_ni
from ydk.services import CRUDService
from ydk.models.openconfig import openconfig_policy_types as oc_policy_types
from ydk.models.openconfig import openconfig_bgp_types as oc_bgp_types

bgp = {
       'vrf': 'default',
       'as': '65000',
       'router_id': '104.160.139.133',
       'peer-group-name': 'gNMI SET TEST',
       'peer-as': '65000',
       'peer-group-local-address': '192.168.1.1',
       'neighbor': '198.168.1.2'
        }


def config_oc_bgp_ipv4():
    ni = oc_ni.NetworkInstances.NetworkInstance()
    ni.name = bgp["vrf"]

    protocol = ni.Protocols.Protocol()
    protocol.identifier = oc_policy_types.BGP()
    protocol.name = bgp["vrf"]
    protocol.config.identifier = oc_policy_types.BGP()
    protocol.config.name = bgp["vrf"]
    protocol.bgp.global_.config.as_ = int(bgp['as'])

    # Global bgp parameters
    afi_safi = protocol.bgp.global_.afi_safis.AfiSafi()
    afi_safi.afi_safi_name = oc_bgp_types.IPV4UNICAST()
    afi_safi.config.enabled = True
    protocol.bgp.global_.afi_safis.afi_safi.append(afi_safi)
    #
    # peer-group and address family
    peer_group = protocol.bgp.peer_groups.PeerGroup()
    peer_group.peer_group_name = bgp["peer-group-name"]
    peer_group.config.peer_group_name = bgp["peer-group-name"]
    peer_group.config.peer_as = int(bgp["peer-as"])
    peer_group.transport.config.local_address = bgp["peer-group-local-address"]
    afi_safi = peer_group.afi_safis.AfiSafi()
    afi_safi.afi_safi_name = oc_bgp_types.IPV4UNICAST()
    afi_safi.config.enabled = True
    peer_group.afi_safis.afi_safi.append(afi_safi)

    # bgp neighbor with peer-group
    neighbor = protocol.bgp.neighbors.Neighbor()
    neighbor.neighbor_address = bgp["neighbor"]
    neighbor.config.neighbor_address = bgp["neighbor"]  # type: str
    neighbor.config.peer_group = bgp["peer-group-name"]
    #
    # Putting all together
    protocol.bgp.peer_groups.peer_group.append(peer_group)
    protocol.bgp.neighbors.neighbor.append(neighbor)
    ni.protocols.protocol.append(protocol)
    return ni

if __name__ == "__main__":
    """Execute main program."""
    parser = ArgumentParser()
    parser.add_argument("-v", "--verbose", help="print debugging messages",
                        action="store_true")
    parser.add_argument('-i', '--grpc-ip', action='store', dest='grpc_ip',
                        help='Specify the IOS-XR GRPC server IP address', required=True)
    parser.add_argument('-g', '--grpc-port', action='store', dest='grpc_port',
                        help='Specify the IOS-XR GRPC server port', required=True)
    parser.add_argument('-u', '--username', action='store', dest='username',
                        help='Specify username to connect to gRPC server on XR', required=True)
    parser.add_argument('-p', '--password', action='store', dest='password',
                        help='Specify password to connect to gRPC server on XR', required=True)
    parser.add_argument('-y', '--yang-repo-path', action='store', dest='yang_repo_location',
                        help='Specify yang repo path', required=True)
    parser.add_argument('-e', '--extra-verbose', action='store_true',
                        help='Extra Verbose logs')
    args = parser.parse_args()

    # 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)
        if args.extra_verbose:
            os.environ['GRPC_TRACE'] = 'all'
            os.environ['GRPC_VERBOSITY'] = 'DEBUG'

    repository = Repository(args.yang_repo_location)
    provider = gNMIServiceProvider(repo=repository,
                                   address=args.grpc_ip,
                                   port=int(args.grpc_port),
                                   username=args.username,
                                   password=args.password)

    crud = CRUDService()
    bgp_ni = config_oc_bgp_ipv4()
    crud.create(provider, bgp_ni)

thanks in advance for any pointers

Re: ERROR - Data is invalid according to the yang model when configuration openconfig bgp and ios-xr

jaime botello — Mon, 11 Mar 2019 03:28:36 GMT

Found my answer here and with some help from some very smart Cisco folks 😉

https://community.cisco.com/t5/yang-development-kit-ydk/ydk-errors-ymodelerror-invalid-value-quot-192-168-1-1-quot-in/m-p/3774272

Re: ERROR - Data is invalid according to the yang model when configuration openconfig bgp and ios-xr

saalvare — Wed, 27 Mar 2019 21:04:55 GMT

Let me clarify that you don't need to generate your own OC bundle. You can just patch the YANG files under `~/.ydk/<router>/`

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ERROR - Data is invalid according to the yang model when configuration openconfig bgp and ios-xr

Re: ERROR - Data is invalid according to the yang model when configuration openconfig bgp and ios-xr

Re: ERROR - Data is invalid according to the yang model when configuration openconfig bgp and ios-xr