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Re: [Netconf] Clarification on Netconf behavior

Jan Lindblad <janl@tail-f.com> Thu, 22 November 2018 09:00 UTC

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From: Jan Lindblad <janl@tail-f.com>
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Date: Thu, 22 Nov 2018 10:00:20 +0100
In-Reply-To: <585C70E3-915D-42C7-AFEF-A3C924E89AC4@nokia.com>
Cc: Netconf <netconf@ietf.org>
To: "Xavier Pruno, Pratibha (Nokia - IN/Bangalore)" <pratibha.xavier_pruno@nokia.com>
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Subject: Re: [Netconf] Clarification on Netconf behavior
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Pratibha,

Your unfiltered query returns "test_subtree" as one of the xconnect-group names:

>           <xconnect-group>
>             <name>test_subtree</name>


Your query filter requests " test_subtree " for the xconnect-group name:

>             <xconnect-group>
>              <name> test_subtree </name>

There is no entry by that name in the device, so empty data is returned. Whitespace is significant.

/jan


> On 21 Nov 2018, at 19:36, Xavier Pruno, Pratibha (Nokia - IN/Bangalore) <pratibha.xavier_pruno@nokia.com> wrote:
> 
> Hi Experts,
>  
>   I have a cisco node (Cisco XRv) and when I do the following sub-tree, it gives me an output as below (it correct and expected). When I do a subtree filter with content match and if the content match node is the only element , what is the expected behavior? I am getting an empty data. Is this correct or are we expected to get the content-match tag in the response.
>  
>  
> REQUEST:
> =======
> <rpc message-id="101" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
>   <get-config>
>     <source>
>       <running/>
>     </source>
>     <filter>
>       <l2vpn xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-l2vpn-cfg <http://cisco.com/ns/yang/Cisco-IOS-XR-l2vpn-cfg>">
>         <database>
>           <xconnect-groups>
>             <xconnect-group/>
>           </xconnect-groups>
>         </database>
>       </l2vpn>
>     </filter>
>   </get-config>
> </rpc>
>  
> RESPONSE:
> =========
> <nc:rpc-reply message-id="urn:uuid:d32553aa-4474-46a2-b759-ded48c8d9064" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
>   <nc:data>
>     <l2vpn xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-l2vpn-cfg <http://cisco.com/ns/yang/Cisco-IOS-XR-l2vpn-cfg>">
>       <database>
>         <xconnect-groups>
>           <xconnect-group>
>             <name>test_subtree</name>
>           </xconnect-group>
>           <xconnect-group>
>             <name>sdsdsd</name>
>           </xconnect-group>
>           <xconnect-group>
>             <name>mdc_abc</name>
>           </xconnect-group>
>           <xconnect-group>
>             <name>mdc_test</name>
>           </xconnect-group>
>           <xconnect-group>
>             <name>DemoEline</name>
>             <p2p-xconnects>
>               <p2p-xconnect>
>                 <name>DemoEline</name>
>                 <p2p-description>DEMOFORELINE</p2p-description>
>               </p2p-xconnect>
>             </p2p-xconnects>
>           </xconnect-group>
>           <xconnect-group>
>             <name>Uday_test</name>
>           </xconnect-group>
>           <xconnect-group>
>             <name>Eline_GRPC</name>
>             <p2p-xconnects>
>               <p2p-xconnect>
>                 <name>Eline_GRPC</name>
>                 <attachment-circuits>
>                   <attachment-circuit>
>                     <name>GigabitEthernet0/0/0/1.777</name>
>                     <enable/>
>                   </attachment-circuit>
>                 </attachment-circuits>
>                 <pseudowires>
>                   <pseudowire>
>                     <neighbor>
>                       <neighbor>38.120.234.239</neighbor>
>                       <class>tunnel-te777</class>
>                     </neighbor>
>                     <pseudowire-id>999</pseudowire-id>
>                   </pseudowire>
>                 </pseudowires>
>               </p2p-xconnect>
>             </p2p-xconnects>
>           </xconnect-group>
>           <xconnect-group>
>             <name>Xconnect_today</name>
>           </xconnect-group>
>           <xconnect-group>
>             <name>DemoElineSwitching111</name>
>             <p2p-xconnects>
>               <p2p-xconnect>
>                 <name>DemoElineSwitching111</name>
>                 <attachment-circuits>
>                   <attachment-circuit>
>                     <name>GigabitEthernet0/0/0/1.40090051</name>
>                     <enable/>
>                   </attachment-circuit>
>                 </attachment-circuits>
>                 <pseudowires>
>                   <pseudowire>
>                     <neighbor>
>                       <neighbor>38.120.234.236</neighbor>
>                       <class>Tunnel519</class>
>                     </neighbor>
>                     <pseudowire-id>4009</pseudowire-id>
>                   </pseudowire>
>                 </pseudowires>
>               </p2p-xconnect>
>             </p2p-xconnects>
>           </xconnect-group>
>           <xconnect-group>
>             <name>DemoElineSwitching519</name>
>             <p2p-xconnects>
>               <p2p-xconnect>
>                 <name>DemoElineSwitching519</name>
>                 <attachment-circuits>
>                   <attachment-circuit>
>                     <name>GigabitEthernet0/0/0/1.4006</name>
>                     <enable/>
>                   </attachment-circuit>
>                 </attachment-circuits>
>                 <pseudowires>
>                   <pseudowire>
>                     <neighbor>
>                       <neighbor>38.120.234.236</neighbor>
>                       <class>Tunnel519</class>
>                     </neighbor>
>                     <pseudowire-id>4006</pseudowire-id>
>                   </pseudowire>
>                 </pseudowires>
>               </p2p-xconnect>
>             </p2p-xconnects>
>           </xconnect-group>
>         </xconnect-groups>
>       </database>
>     </l2vpn>
>   </nc:data>
> </nc:rpc-reply>
>  
> Subtree filtering (with content match)
> =============================
> <rpc message-id="101" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
>   <get-config>
>     <source>
>       <running/>
>     </source>
>     <filter>
>       <l2vpn xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-l2vpn-cfg <http://cisco.com/ns/yang/Cisco-IOS-XR-l2vpn-cfg>">
>         <database>
>           <xconnect-groups>
>             <xconnect-group>
>              <name> test_subtree </name>
>             </xconnect-group>
>                </xconnect-groups>
>         </database>
>       </l2vpn>
>     </filter>
>   </get-config>
> </rpc>
>  
> Response:  
> ========
>  
> <nc:rpc-reply message-id="urn:uuid:bfbf91f3-728e-4766-acff-66ad1e43ec98" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
>   <nc:data/>
> </nc:rpc-reply>
>  
> Is this correct as per RFC ??
>  
> Pratibha
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