topic Re: ncclient get_config subtree filter not working in Controllers

ncclient get_config subtree filter not working

Marcel Zehnder — Tue, 07 Mar 2023 21:48:30 GMT

Hi everyone

Does anybody else facing issues when using ncclient's get_config method with a subtree filter? On most XE-boxes I get empty data for my calls:

<snip> with manager.connect(host=device,port=830,username=user,password=password,hostkey_verify=False) as m: subtree = """ <native xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-native"> <interface> <Loopback> <name>0</name> </Loopback> </interface> </native> """ reply = m.get_config(filter=("subtree", subtree), source="running") return reply.data_xml <snip>

is just returning an empty data element:

<?xml version="1.0" encoding="UTF-8"?> <data xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0"/>

(yes, the Lo0 is configured on all of the boxes)

Python 3.9.13
ncclient==0.6.13

Re: ncclient get_config subtree filter not working

bigevilbeard — Wed, 08 Mar 2023 15:10:52 GMT

Be good to see what the box is seeing, pop a eem in and run it

event manager applet catchall event cli pattern ".*" sync no skip no action 1 syslog msg "$_cli_msg"

Re: ncclient get_config subtree filter not working

brybyrne — Mon, 01 May 2023 21:09:26 GMT

Sorry to bring this thread back from the dead but did you ever find an answer to the empty dataset issue?

Re: ncclient get_config subtree filter not working

Marcel Zehnder — Tue, 02 May 2023 07:01:31 GMT

Not really, well I think it's related to the IOS version - Seems like it's working with the newest versions.

Marcel

Re: ncclient get_config subtree filter not working

brybyrne — Tue, 02 May 2023 13:11:11 GMT

Awesome. Thank you!

Re: ncclient get_config subtree filter not working

davehouser1 — Tue, 06 Jun 2023 18:03:20 GMT

I was running into the same issue with my XR. This is my version I am running. Note this deployed on a whitebox, so its cisco ios v-xr

Tue Jun 6 12:59:42.986 ECT Cisco IOS XR Software, Version 7.4.16 Copyright (c) 2013-2021 by Cisco Systems, Inc. Build Information: Built By : ingunawa Built On : Mon Nov 29 03:56:27 PST 2021 Built Host : iox-ucs-069 Workspace : /auto/srcarchive17/prod/7.4.16/iosxrwbd/ws Version : 7.4.16 Location : /opt/cisco/XR/packages/ Label : 7.4.16

The problem I was running into was at first I as including `<filter></filter>` in my subtree statement, also tried including cisco get-config prefix and suffixes like this (note I was looking for an object group contents)

<get-config> <source> <running/> </source> <filter> <object-group xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-um-object-group-cfg"> <network> <ipv4s> <ipv4> <ipv4-object-group-name>TEST_BLOCK_LIST</ipv4-object-group-name> </ipv4> </ipv4s> </network> </object-group> </filter> </get-config> </rpc>

Both returned the same result that OP shows. In the end it was to only to include the parent string name like this

If you include anything else the filter wont know where to start and return nothing. However OP seemed to be doing this so not sure why it started working for him.