Supported module or path for Event Driven Telemetry on Cisco IOS XR 7

[divyanshukumarpcm]

Hi everyone,

I have a device XR 7.0.1 (IOSXRV9000). I wanted to set up dial-out event driven (on-change) telemetry.
Is there a list or way to find out which module/path support this feature?

I tried this:

State: ACTIVE
Source Interface: MgmtEth0_RP0_CPU0_0(Up 0x60000000)
Sensor groups:
Id: interfaces
Sample Interval: 0 ms
Sensor Path: Cisco-IOS-XR-pfi-im-cmd-oper:interfaces
Sensor Path State: Resolved

I got the first full response when my router connected to collector. But when I changed description, notification was not received. I also checked the "no of packets sent" in router which was not changed.

Thanks for help!

[rahusha7]

Hi,

Event-driven-telemetry is supported for limited number of sensor-paths, and this sensor path is not supported.

[divyanshukumarpcm]

Hi @rahusha7 
thanks for your inputs.
Is there any list or method to find if a given sensor path supports dial out Event-driven-telemetry?

[rahusha7]

There is a list of sensor-paths that support EDT on latest XR version. Let me know if you are interested.

[divyanshukumarpcm]

XR 7.0.1 would be better but I will take whatever info you have. Probably try some of the paths if supported in the old version.

[divyanshukumarpcm]

Hi @rahusha7 
Please provide the list for the latest version.
Also any lead on the XR 7.0.1 supported list will be appreciated. Even one path which is supported on this version will help us.

Thanks

[chitchcock-I2]

I'm late but chiming in here to hopefully share insight since I had the exact same question!

Per Cisco documentation, "For the nodes that support event-driven telemetry (EDT), the YANG model is annotated with the statement xr:event-telemetry. For example, the interface that supports EDT has an annotation as shown in the following example:

leaf interface-name {
      xr:event-telemetry "Subscribe Telemetry Event";
      type xr:Interface-name;
      description "Member's interface name";
    }

"

Looking at the YangModels github, I don't see any references to "xr:event-telemetry" so I might be misunderstanding something. That said, I found an xrdocs article explicitly specifying a couple paths, though it's from 2019. (Source)

(I found this by searching "xrdocs" "EDT" (yes include the quotes) in google so feel free to try it yourself to see if any updated sources are ever released.)

[chitchcock-I2]

Update: Just checked the top yang file from the screenshot I provided on the YangModels github and it actually explicitly mentions the following:

"
2020-09-03
Removed event-telemetry annotation from leaf interface-name of grouping BM-MEMBER-DATA
"

Soooo I'm not sure what the motivation for doing so was....