Re: Unable to read configuration of the static routes

dvulovic · ‎03-24-2017

Hi,

as my first try with YDK, I'm trying to read configuration of the static routes (something I have been doing with ncclient). The code is simple:

log = logging.getLogger('ydk')

log.setLevel(logging.DEBUG)

ch = logging.StreamHandler()

log.addHandler(ch)

provider = NetconfServiceProvider(address=HOST, port=PORT, username=USER, password=PASS, protocol=PROTO)

crud = CRUDService()

router_static = Cisco_IOS_XR_ip_static_cfg.RouterStatic()

crud.read(provider,router_static)

print ("Printing static routes:\n")

for vrf_prefix in router_static.default_vrf.address_family.vrfipv4.vrf_unicast.vrf_prefixes.vrf_prefix:

print(vrf_prefix.prefix + "/" + vrf_prefix.prefix_length)

print ("Done.\n")

However, nothing happens although log shows that config has been read from the router:

**************************************************************************

C:\Users\dvulovic\AppData\Local\Programs\Python\Python35\python.exe C:/Users/dvulovic/PycharmProjects/YDK/YDK-test.py

NetconfServiceProvider connected to 10.62.38.90:830 using ssh

READ operation initiated

<get>

<router-static xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-ip-static-cfg"/>

</filter>

</get>

</rpc>

<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="urn:uuid:8537d64e-7ceb-4295-93b4-51404b183cbe">

<data>

<router-static xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-ip-static-cfg">

<default-vrf>

<address-family>

<vrf-unicast>

<vrf-prefixes>

<vrf-prefix>

<prefix-length>0</prefix-length>

<vrf-route>

<vrf-next-hop-table>

<vrf-next-hop-next-hop-address>

<next-hop-address>10.254.0.1</next-hop-address>

</vrf-next-hop-next-hop-address>

</vrf-next-hop-table>

</vrf-route>

</vrf-prefix>

<vrf-prefix>

<prefix-length>32</prefix-length>

<vrf-route>

<vrf-next-hop-table>

<vrf-next-hop-next-hop-address>

<next-hop-address>10.62.38.88</next-hop-address>

</vrf-next-hop-next-hop-address>

<vrf-next-hop-next-hop-address>

<next-hop-address>10.62.38.89</next-hop-address>

</vrf-next-hop-next-hop-address>

</vrf-next-hop-table>

</vrf-route>

</vrf-prefix>

<vrf-prefix>

<prefix-length>32</prefix-length>

<vrf-route>

<vrf-next-hop-table>

<vrf-next-hop-next-hop-address>

<next-hop-address>10.254.0.1</next-hop-address>

</vrf-next-hop-next-hop-address>

</vrf-next-hop-table>

</vrf-route>

</vrf-prefix>

<vrf-prefix>

<prefix-length>32</prefix-length>

<vrf-route>

<vrf-next-hop-table>

<vrf-next-hop-next-hop-address>

<next-hop-address>10.254.0.1</next-hop-address>

</vrf-next-hop-next-hop-address>

</vrf-next-hop-table>

</vrf-route>

</vrf-prefix>

<vrf-prefix>

<prefix-length>32</prefix-length>

<vrf-route>

<vrf-next-hop-table>

<vrf-next-hop-next-hop-address>

<next-hop-address>10.62.38.88</next-hop-address>

</vrf-next-hop-next-hop-address>

<vrf-next-hop-next-hop-address>

<next-hop-address>10.62.38.89</next-hop-address>

</vrf-next-hop-next-hop-address>

</vrf-next-hop-table>

</vrf-route>

</vrf-prefix>

</vrf-prefixes>

</vrf-unicast>

</vrfipv4>

</address-family>

</default-vrf>

</router-static>

</data>

</rpc-reply>

READ operation completed

Printing static routes:

Done.

NetconfServiceProvider disconnected from 10.62.38.90:830 using ssh

Process finished with exit code 0

**************************************************************************

Any ideas?

Can the problem be the fact I'm not using lxml 3.4.4 but 3.7.2 ?

Thanks in advance,

Djordje

abhirame · ‎03-24-2017

Hi,

~/ > pip list|grep lxml

lxml (3.7.3)

I upgraded my lxml to 3.7.3 and the below script is working fine for me. Not sure why you're seeing this issue

from ydk.models.cisco_ios_xr import Cisco_IOS_XR_ip_static_cfg

import logging

log = logging.getLogger('ydk')

log.setLevel(logging.DEBUG)

ch = logging.StreamHandler()

log.addHandler(ch)

from ydk.providers import NetconfServiceProvider

from ydk.services import CRUDService

crud = CRUDService()

ncc = NetconfServiceProvider(address='localhost' , username='vagrant', password='vagrant', port=830)

router_static = crud.read(ncc,Cisco_IOS_XR_ip_static_cfg.RouterStatic())

for pref in router_static.default_vrf.address_family.vrfipv4.vrf_unicast.vrf_prefixes.vrf_prefix:

print ( '{}/{}'.format(pref.prefix, pref.prefix_length))

saalvare · ‎03-28-2017

Can't really reproduce issue with latest YDK-Py with either version of LXML.

script works for me with clean YDK-Py 0.5.4 install.

$ pip list

Package Version

----------------------- -------

appdirs 1.4.3

asn1crypto 0.22.0

cffi 1.10.0

cryptography 1.8.1

enum34 1.1.3

idna 2.5

ipaddress 1.0.18

lxml 3.4.4

ncclient 0.5.3

packaging 16.8

paramiko 2.1.2

pip 9.0.1

pyasn1 0.2.3

pybind11 2.0.1

pycparser 2.17

pyparsing 2.2.0

setuptools 34.3.3

six 1.10.0

wheel 0.29.0

ydk 0.5.4

ydk-models-cisco-ios-xr 6.2.1

ydk-models-ietf 0.1.1

ydk-models-openconfig 0.1.2

$

$ ./nc-read-xr-ip-static-cfg-20-ydk.py ssh://xxx:xxx@yyy

Printing static routes:

0.0.0.0 / 0

Done.

$

$ pip install lxml==3.7.2

Collecting lxml==3.7.2

Downloading lxml-3.7.2-cp27-cp27mu-manylinux1_x86_64.whl (6.8MB)

100% |████████████████████████████████| 6.8MB 226kB/s

Installing collected packages: lxml

Found existing installation: lxml 3.4.4

Uninstalling lxml-3.4.4:

Successfully uninstalled lxml-3.4.4

Successfully installed lxml-3.7.2

$

$ ./nc-read-xr-ip-static-cfg-20-ydk.py ssh://xxx:xxx@yyy

Printing static routes:

0.0.0.0 / 0

Done.

$ pip list

Package Version

----------------------- -------

appdirs 1.4.3

asn1crypto 0.22.0

cffi 1.10.0

cryptography 1.8.1

enum34 1.1.3

idna 2.5

ipaddress 1.0.18

lxml 3.7.2

ncclient 0.5.3

packaging 16.8

paramiko 2.1.2

pip 9.0.1

pyasn1 0.2.3

pybind11 2.0.1

pycparser 2.17

pyparsing 2.2.0

setuptools 34.3.3

six 1.10.0

wheel 0.29.0

ydk 0.5.4

ydk-models-cisco-ios-xr 6.2.1

ydk-models-ietf 0.1.1

ydk-models-openconfig 0.1.2

$

dvulovic · ‎04-02-2017

Hi Santiago,

you can easily it reproduce it in the dCloud lab:

admin@controller:~$ cat dv1.py

from ydk.models.cisco_ios_xr import Cisco_IOS_XR_ip_static_cfg

from ydk.services.crud_service import CRUDService

from ydk.providers.netconf_provider import NetconfServiceProvider

import logging

HOST = '198.18.1.11'

PORT = 830

USER = 'admin'

PASS = 'admin'

PROTO = 'ssh'

log = logging.getLogger('ydk')

log.setLevel(logging.DEBUG)

ch = logging.StreamHandler()

log.addHandler(ch)

provider = NetconfServiceProvider(address=HOST, port=PORT, username=USER, password=PASS, protocol=PROTO)

crud = CRUDService()

router_static = Cisco_IOS_XR_ip_static_cfg.RouterStatic()

crud.read(provider,router_static)

print ("Printing static routes:\n")

for vrf_prefix in router_static.default_vrf.address_family.vrfipv4.vrf_unicast.vrf_prefixes.vrf_prefix:

print(vrf_prefix.prefix + "/" + vrf_prefix.prefix_length)

print ("Done.\n")

provider.close()

admin@controller:~$ python dv1.py

NetconfServiceProvider connected to 198.18.1.11:830 using ssh

READ operation initiated

<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="urn:uuid:536a279c-e29f-11e6-bc9c-525400b7982f">

<get>

<filter type="subtree">

<router-static xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-ip-static-cfg"/>

</filter>

</get>

</rpc>

<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="urn:uuid:536a279c-e29f-11e6-bc9c-525400b7982f">

<data>

<router-static xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-ip-static-cfg">

<default-vrf>

<address-family>

<vrfipv4>

<vrf-unicast>

<vrf-prefixes>

<vrf-prefix>

<prefix>10.16.0.0</prefix>

<prefix-length>16</prefix-length>

<vrf-route>

<vrf-next-hop-table>

<vrf-next-hop-next-hop-address>

<next-hop-address>198.18.1.1</next-hop-address>

</vrf-next-hop-next-hop-address>

</vrf-next-hop-table>

</vrf-route>

</vrf-prefix>

<vrf-prefix>

<prefix>10.64.0.0</prefix>

<prefix-length>16</prefix-length>

<vrf-route>

<vrf-next-hop-table>

<vrf-next-hop-next-hop-address>

<next-hop-address>198.18.1.1</next-hop-address>

</vrf-next-hop-next-hop-address>

</vrf-next-hop-table>

</vrf-route>

</vrf-prefix>

<vrf-prefix>

<prefix>198.18.0.0</prefix>

<prefix-length>16</prefix-length>

<vrf-route>

<vrf-next-hop-table>

<vrf-next-hop-next-hop-address>

<next-hop-address>198.18.1.1</next-hop-address>

</vrf-next-hop-next-hop-address>

</vrf-next-hop-table>

</vrf-route>

</vrf-prefix>

</vrf-prefixes>

</vrf-unicast>

</vrfipv4>

</address-family>

</default-vrf>

</router-static>

</data>

</rpc-reply>

READ operation completed

Printing static routes:

Done.

NetconfServiceProvider disconnected from 198.18.1.11:830 using ssh

admin@controller:~$

Thanks,

Djordje

saalvare · ‎04-06-2017

dcloud is still running 0.5.3, can you run an instance, upgrade to 0.5.4 and try to reproduce? You can upgrade using:

$ sudo pip install ydk-models-cisco-ios-xr --upgrade

password is the same as username.