Inputs.cisco_telemetry_mdt - not parsing all data in nested "list"

Telegraf
1

Hello Experts,

I have been using TIG to receive/store/show Cisco telemetry data from my C9800 WLC and it work GREAT.

But I’m experiencing an issue with parsing client mobility history data, and i hope some one can help solve my problem.

From the CLI of the C9800 i have this data of a client roaming history.

JLDWLC01#sh wireless client mac-address c477.64eb.6282 mobility history 

Recent association history (most recent on top):

AP Name                                       BSSID           AP Slot    Assoc Time               Instance   Mobility Role   Run Latency (ms)     Dot11 Roam Type
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
BS27-BRYGGERS                                 687d.b462.0818  3          08/23/2025 15:01:59      0          Local           11                   802.11R             
BS27-STUEN                                    687d.b462.bfd8  3          08/23/2025 15:01:29      0          Local           9                    802.11R             
BS27-BRYGGERS                                 687d.b462.0818  3          08/23/2025 12:17:44      0          Local           327                  N/A                 

JLDWLC01#

It is getting received by Telegraf like this. (The data was captured by “Cisco YANG Suite” gRPC Telemetry Receiver)

timestamp:  2025 Aug 23 13:38:35:169000
subscription:  401
node:  JLDWLC01
subscribe_path:  /Cisco-IOS-XE-wireless-client-oper:client-oper-data/mm-if-client-history/mobility-history
  child_path:  /
  name:  client-mac
  value:  c4:77:64:eb:62:82
  child_path:  /entry/
  name:  instance-id
  value:  0
  child_path:  /entry/
  name:  instance-id
  value:  0
  child_path:  /entry/
  name:  instance-id
  value:  0
  child_path:  /entry/
  name:  instance-id
  value:  0
  child_path:  /entry/
  name:  ms-ap-slot-id
  value:  0
  child_path:  /entry/
  name:  ms-ap-slot-id
  value:  3
  child_path:  /entry/
  name:  ms-ap-slot-id
  value:  3
  child_path:  /entry/
  name:  ms-ap-slot-id
  value:  3
  child_path:  /entry/
  name:  ms-assoc-time
  value:  1970-01-01T00:00:00.000000Z
  child_path:  /entry/
  name:  ms-assoc-time
  value:  2025-08-23T13:01:59.000000Z
  child_path:  /entry/
  name:  ms-assoc-time
  value:  2025-08-23T13:01:29.000000Z
  child_path:  /entry/
  name:  ms-assoc-time
  value:  2025-08-23T10:17:44.000000Z
  child_path:  /entry/
  name:  role
  value:  mm-client-role-local
  child_path:  /entry/
  name:  role
  value:  mm-client-role-local
  child_path:  /entry/
  name:  role
  value:  mm-client-role-local
  child_path:  /entry/
  name:  bssid
  value:  68:7d:b4:62:08:18
  child_path:  /entry/
  name:  bssid
  value:  68:7d:b4:62:bf:d8
  child_path:  /entry/
  name:  bssid
  value:  68:7d:b4:62:08:18
  child_path:  /entry/
  name:  ap-name
  value:  BS27-BRYGGERS
  child_path:  /entry/
  name:  ap-name
  value:  BS27-STUEN
  child_path:  /entry/
  name:  ap-name
  value:  BS27-BRYGGERS
  child_path:  /entry/
  name:  run-latency
  value:  0
  child_path:  /entry/
  name:  run-latency
  value:  11
  child_path:  /entry/
  name:  run-latency
  value:  9
  child_path:  /entry/
  name:  run-latency
  value:  327
  child_path:  /entry/
  name:  dot11-roam-type
  value:  dot11-roam-type-fast-11r
  child_path:  /entry/
  name:  dot11-roam-type
  value:  dot11-roam-type-fast-11r
  child_path:  /entry/
  name:  dot11-roam-type
  value:  dot11-roam-type-none

But only some of the data is parsed to influxdb. (The data was captured by “outputs.file”)

{
	"fields": {
		"entry/ap_name": "BS27-BRYGGERS",
		"entry/bssid": "68:7d:b4:62:08:18",
		"entry/dot11_roam_type": "dot11-roam-type-none",
		"entry/instance_id": 0,
		"entry/ms_ap_slot_id": 3,
		"entry/ms_assoc_time": "2025-08-23T10:17:44.000000Z",
		"entry/role": "mm-client-role-local",
		"entry/run_latency": 327
	},
	"name": "Cisco-IOS-XE-wireless-client-oper:client-oper-data/mm-if-client-history/mobility-history",
	"tags": {
		"client_mac": "c4:77:64:eb:62:82",
		"host": "telegraf",
		"path": "Cisco-IOS-XE-wireless-client-oper:client-oper-data/mm-if-client-history/mobility-history",
		"source": "JLDWLC01",
		"subscription": "316"
	},
	"timestamp": 1755957798
},

Here is a link for the YANG model if needed.

https://github.com/YangModels/yang/blob/main/vendor/cisco/xe/17121/Cisco-IOS-XE-wireless-client-oper.yang

My “take a way” is, that telegraf receives a “nested list” but only parses one line of the list.

I have tried using the “embedded_tags” feature with out result (maybe I’m doing it wrong)

embedded_tags = ["Cisco-IOS-XE-wireless-client-oper:client-oper-data/mm-if-client-history/mobility-history/entry/ms_assoc_time"]

My version of telegraf is 1.35.4 running i docker.

Please let me know if you need further information.

Looking forward to your reply /Jan