Multiple yang subfilters treated separately

cristian.05 — Wed, 26 Feb 2020 11:15:16 GMT

Hello,

I am automating a series of tests on IOS-XR devices using Netconf/Yang. As part of this, I'm currently working on a particular test involving some LDP checks. I want to get some MPLS information for a protected path in the forwarding table for a known prefix. The filter I'm using is as follows:

<filter>
  <mpls-ldp xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-mpls-ldp-oper">
    <global>
      <active>
        <default-vrf>
          <afs>
            <af>
              <forwardings>
                <forwarding>
                  <prefix>{}</prefix>
                  <paths>
                    <routing>
                      <interface/>
                      <path-flags>ip-path-protected</path-flags>
                    </routing>
                    <mpls>
                      <mpls-outgoing-info>
                        <nexthop-peer-ldp-ident>
                          <lsr-id/>
                        </nexthop-peer-ldp-ident>
                        <out-label/>
                      </mpls-outgoing-info>
                    </mpls>
                  </paths>
                </forwarding>
              </forwardings>
              <af-name/>
            </af>
          </afs>
        </default-vrf>
      </active>
    </global>
  </mpls-ldp>
</filter>

With this filter, my aim is to obtain the interface, lsr-id and out-label for only those forwarding entries that are marked as protected in the <routing> subtree. However, what I'm getting instead is:

For forwarding entries that are NOT protected, I get the <mpls> information, since there's no match in the <routing> subtree.
For forwarding entries that ARE protected, I do get the expected result: both the <interface> specified in the <routing> subtree and the mpls information (next-hop peer <lsr-id> and <out-label>) specified in the <mpls> subtree.

This basically shows that the <routing> and <mpls> subfilters are being applied separately, instead of in conjunction. Is there any way to only get the results that match both the <routing> and <mpls> subfilters at the same time, rather than only one of them?

Apologies if this question does not belong here. If that is the case I would appreciate being pointed in the right direction.

topic Multiple yang subfilters treated separately in Controllers

Multiple yang subfilters treated separately