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Which YANG Models Support On-Change Telemetry

slarrarte
Level 1
Level 1

Hello,

I am working with NETCONF/RESTCONF and MDT (TIG Stack) on the IOS XE on Cat8kv reservable sandbox.  I have not been able to figure out how to stream interface state via on-change.  For reference, I am using the basic ietf-interfaces.yang model.  

So far, the subscription only becomes valid if it's set to periodic. 

Here is the YANG-modeled mdt subscription I am trying to make work:

{
"Cisco-IOS-XE-mdt-cfg:mdt-subscription": [
{
"subscription-id": "69",
"base": {
"stream": "yang-push",
"encoding": "encode-kvgpb",
"dampening period": "0",
"xpath": "/ietf-interfaces:interfaces-state/interface[name='Loopback69']/oper-status"
},
"mdt-receivers": {
"address": "10.10.20.50",
"port": "57500",
"protocol": "grpc-tcp"
}
}
]
}

I am aware that not all YANG models support on-change, and there doesn't seem to be any indicator of what models support it.  Is this just a case of ietf-interfaces.yang not supporting on-change, or am I configuring this incorrectly?

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