Telemetry has the following configuration guidelines and limitations:

• For information about supported platforms, see the Nexus Switch Platform Matrix.

• Cisco NX-OS releases that support the data management engine (DME) Native Model support Telemetry.

• Support is in place for the following:

  • DME data collection

  • NX-API data sources

  • Google protocol buffer (GPB) encoding over Google Remote Procedure Call (gRPC) transport

  • JSON encoding over HTTP

• The smallest sending interval (cadence) supported is five seconds for a depth of 0. The minimum cadence values for depth values greater than 0 depends on the size of the data being streamed out. Configuring any cadences below the minimum value may result in undesirable system behavior.

• Telemetry supports up to five remote management receivers (destinations). Configuring more than five remote receivers may result in undesirable system behavior.

• Telemetry can consume up to 20% of the CPU resource.

Configuration Commands After Downgrading to an Older Release

After a downgrade to an older release, some configuration commands or command options can fail because the older release may not support them. When downgrading to an older release, unconfigure and reconfigure the telemetry feature after the new image comes up. This sequence avoids the failure of unsupported commands or command options.

The following example shows this procedure:

• Copy the telemetry configuration to a file:

  
  switch# show running-config | section telemetry
  feature telemetry
  telemetry
    destination-group 100
      ip address 1.2.3.4 port 50004 protocol gRPC encoding GPB 
      use-chunking size 4096
    sensor-group 100
      path sys/bgp/inst/dom-default depth 0
    subscription 600
      dst-grp 100
      snsr-grp 100 sample-interval 7000
  switch# show running-config | section telemetry > telemetry_running_config
  switch# show file bootflash:telemetry_running_config
  feature telemetry
  telemetry
    destination-group 100
      ip address 1.2.3.4 port 50004 protocol gRPC encoding GPB 
      use-chunking size 4096
    sensor-group 100
      path sys/bgp/inst/dom-default depth 0
    subscription 600
      dst-grp 100
      snsr-grp 100 sample-interval 7000
  switch# 
  

• Execute the downgrade operation. When the image comes up and the switch is ready, copy the telemetry configurations back to the switch.

  
  switch# copy telemetry_running_config running-config echo-commands 
  `switch# config terminal`
  `switch(config)# feature telemetry`
  `switch(config)# telemetry`
  `switch(config-telemetry)# destination-group 100`
  `switch(conf-tm-dest)# ip address 1.2.3.4 port 50004 protocol gRPC encoding GPB `
  `switch(conf-tm-dest)# sensor-group 100`
  `switch(conf-tm-sensor)# path sys/bgp/inst/dom-default depth 0`
  `switch(conf-tm-sensor)# subscription 600`
  `switch(conf-tm-sub)# dst-grp 100`
  `switch(conf-tm-sub)# snsr-grp 100 sample-interval 7000`
  `switch(conf-tm-sub)# end`
  Copy complete, now saving to disk (please wait)...
  Copy complete.
  switch#
  

gRPC Error Behavior

The switch client disables the connection to the gRPC receiver if the gRPC receiver sends 20 errors. Unconfigure then reconfigure the receiver's IP address under the destination group to enable the gRPC receiver. Errors include:

• The gRPC client sends the wrong certificate for secure connections.

• The gRPC receiver takes too long to handle client messages and incurs a timeout. Avoid timeouts by processing messages using a separate message processing thread.

Support for gRPC Chunking

Starting with Release 9.2(1), support for gRPC chunking has been added. For streaming to occur successfully, you must enable chunking if gRPC has to send an amount of data greater than 12 MB to the receiver.

The gRPC user must do the gRPC chunking. The gRPC client side does the fragmentation, and the gRPC server side does the reassembly. Telemetry is still bound to memory and data can be dropped if the memory size is more than the allowed limit of 12 MB for telemetry. In order to support chunking, use the telemetry .proto file that is available at Cisco's GibLab, which has been updated for gRPC chunking, as described in テレメトリ コンポーネントとプロセス.

The chunking size is from 64 through 4096 bytes.

Following shows a configuration example through the NX-API CLI:

feature telemetry
!
telemetry
  destination-group 1
    ip address 171.68.197.40 port 50051 protocol gRPC encoding GPB 
    use-chunking size 4096
  destination-group 2
    ip address 10.155.0.15 port 50001 protocol gRPC encoding GPB 
    use-chunking size 64
  sensor-group 1
    path sys/intf depth unbounded
  sensor-group 2
    path sys/intf depth unbounded	
  subscription 1
    dst-grp 1
    snsr-grp 1 sample-interval 10000
  subscription 2
    dst-grp 2
    snsr-grp 2 sample-interval 15000

Following shows a configuration example through the NX-API REST:

{
    "telemetryDestGrpOptChunking": {
        "attributes": {
            "chunkSize": "2048",
            "dn": "sys/tm/dest-1/chunking"
        }
    }
}

The following error message appears on systems that do not support gRPC chunking, such as the Cisco MDS series switches:

MDS-9706-86(conf-tm-dest)# use-chunking size 200
ERROR: Operation failed: [chunking support not available]

NX-API Sensor Path Limitations

NX-API can collect and stream switch information not yet in the DME using show commands. However, using the NX-API instead of streaming data from the DME has inherent scale limitations as outlined:

• The switch backend dynamically processes NX-API calls such as show commands,

• NX-API spawns several processes that can consume up to a maximum of 20% of the CPU.

• NX-API data translates from the CLI to XML to JSON.

The following is a suggested user flow to help limit excessive NX-API sensor path bandwidth consumption:

1. Check whether the show command has NX-API support. You can confirm whether NX-API supports the command from the VSH with the pipe option: show <command> | json or show <command> | json pretty.

   Note	Avoid commands that take the switch more than 30 seconds to return JSON output.

2. Refine the show command to include any filters or options.

   • Avoid enumerating the same command for individual outputs; for example, show vlan id 100 , show vlan id 101 , and so on. Instead, use the CLI range options; for example, show vlan id 100-110,204 , whenever possible to improve performance.

     If only the summary or counter is needed, then avoid dumping a whole show command output to limit the bandwidth and data storage that is required for data collection.

3. Configure telemetry with sensor groups that use NX-API as their data sources. Add the show commands as sensor paths

4. Configure telemetry with a cadence of five times the processing time of the respective show command to limit CPI usage.

5. Receive and process the streamed NX-API output as part of the existing DME collection.

Telemetry VRF Support

Telemetry VRF support allows you to specify a transport VRF, which means that the telemetry data stream can egress through front-panel ports and avoid possible competition between SSH or NGINX control sessions.

You can use the use-vrf vrf-name command to specify the transport VRF.

The following example specifies the transport VRF:

{
              "telemetryDestProfile": {
                "attributes": {
                  "adminSt": "enabled"
                },
                "children": [
                  {
                    "telemetryDestOptVrf": {
                      "attributes": {
                        "name": "default"
                      }
                    }
                  }
                ]
              }
            }

Certificate Trustpoint Support

Beginning in NX-OS release 10.1(1), the trustpoint keyword is added in the existing global level command.

switch(config-telemetry)# certificate ?​
trustpoint    specify trustpoint label                  
WORD          .pem certificate filename (Max Size 256)  
switch(config-telemetry)# certificate trustpoint ​
WORD          trustpoint label name (Max Size 256)​
switch(config-telemetry)# certificate trustpoint trustpoint1 ?​
WORD  Hostname associated with certificate (Max Size 256)​
switch(config-telemetry)#certificate trustpoint trustpoint1 foo.test.google.fr​

Destination Hostname Support

Beginning in NX-OS release 10.1(1), the host keyword is added in destination-group command.

switch(config-telemetry)# destination-group 1​
switch(conf-tm-dest)# ?​
certificate Specify certificate
host Specify destination host
ip Set destination IPv4 address
ipv6 Set destination IPv6 address
...​
switch(conf-tm-dest)# host ?​
A.B.C.D|A:B::C:D|WORD  IPv4 or IPv6 address or DNS name of destination​
switch(conf-tm-dest)#​

switch(conf-tm-dest)# host abc port 11111 ?​
protocol  Set transport protocol​
switch(conf-tm-dest)# host abc port 11111 protocol ?​
HTTP  ​
UDP   ​
gRPC  ​
switch(conf-tm-dest)# host abc port 11111 protocol gRPC ?​
encoding  Set encoding format​
switch(conf-tm-dest)# host abc port 11111 protocol gRPC encoding ? ​
Form-data    Set encoding to Form-data only​
GPB          Set encoding to GPB only​
GPB-compact  Set encoding to Compact-GPB only​
JSON         Set encoding to JSON​
XML          Set encoding to XML​
switch(conf-tm-dest)# host ip address 1.1.1.1 port 2222 protocol HTTP encoding JSON
<CR>​
​

Support for Node ID

Beginning in NX-OS release 10.1(1), you can configure a custom Node ID string for a telemetry receiver through the use-nodeid command. By default, the host name is used, but support for a node ID enables you to set or change the identifier for the node_id_str of the telemetry receiver data.

You can assign the node ID through the telemetry destination profile, by using the usenode-id command. This command is optional.

switch(config)# telemetry
switch(config-telemetry)# destination-profile
switch(conf-tm-dest-profile)# use-nodeid test-srvr-10
switch(conf-tm-dest-profile)#

Telemetry receiver:
==================================
node_id_str: "test-srvr-10"
subscription_id_str: "1"
encoding_path: "sys/ch/psuslot-1/psu"
collection_id: 3896
msg_timestamp: 1559669946501

Use the use-nodeid sub-command under the host command. The destination level use-nodeid configuration preceeds the global level configuration.

The following example shows the command syntax:

switch(config-telemetry)# destination-group 1​
switch(conf-tm-dest)# host 172.19.216.78 port 18112 protocol http enc json​
switch(conf-tm-dest-host)# use-nodeid ?​
WORD  Node ID (Max Size 128)​
switch(conf-tm-dest-host)# use-nodeid session_1:18112​

The following example shows the output from the Telemetry receiver:

>> Message size 923​
Telemetry msg received @  23:41:38 UTC​
    Msg Size: 11​
    node_id_str   : session_1:18112​
    collection_id : 3118​
    data_source   : DME​    
    encoding_path : sys/ch/psuslot-1/psu​
    collection_start_time   : 1598485314721​
    collection_end_time   : 1598485314721​
    data          : ​

Support for Streaming of YANG Models

Beginning in NX-OS release 9.2(1), telemetry supports the YANG ("Yet Another Next Generation") data modeling language. Telemetry supports data streaming for both device YANG and OpenConfig YANG.

For more information on the YANG data modeling language, see Infrastructure Overview and RESTConf Agent.

Support for Proxy

Beginning in NX-OS release 10.1(1), the proxy command is included in the host command. The following is the command syntax:

switch(config-telemetry)# destination-group 1​
switch(conf-tm-dest)# host 172.19.216.78 port 18112 protocol http enc json​
switch(conf-tm-dest-host)# proxy ?​
    A.B.C.D|A:B::C:D|WORD  IPv4 or IPv6 address or DNS name of proxy server​
    <1-65535>  Proxy port number, Default value is 8080​
username  Set proxy authentication username​
password  Set proxy authentication password​

gRPC Asynchronous Mode

The gRPC asynchronous mode is available only under the host command. In normal stream condition, this mode allows the receivers to stream data in mdtDialout call without exiting or receiving WriteDone() call.

The following is the command syntax:

nxosv-1(config-telemetry)# destination-group 1
nxosv-1(conf-tm-dest)# host 172.22.244.130 port 50007 ?
nxosv-1(conf-tm-dest-host)# grpc-async ?

次の手順では、GPB エンコーディングを使用して 10 秒のリズムで単一のテレメトリ DME ストリームを構成する方法について説明します。

switch# configure terminal
switch(config)# feature telemetry
switch(config)# telemetry
switch(config-telemetry)# destination-group 1
switch(config-tm-dest)# ip address 171.70.59.62 port 50051 protocol gRPC encoding GPB
switch(config-tm-dest)# exit
switch(config-telemetry)# sensor group sg1
switch(config-tm-sensor)# data-source DME
switch(config-tm-dest)# path interface depth unbounded query-condition keep-data-type
switch(config-tm-dest)# subscription 1
switch(config-tm-dest)# dst-grp 1 
switch(config-tm-dest)# snsr grp 1 sample interval 10000 

この例では、sys/bgp ルート MO のデータを宛先 IP 1.2.3.4 ポート 50003 に 5 秒ごとにストリーミングするサブスクリプションを作成します。

switch(config)# telemetry
switch(config-telemetry)# sensor-group 100
switch(conf-tm-sensor)# path sys/bgp depth 0
switch(conf-tm-sensor)# destination-group 100
switch(conf-tm-dest)# ip address 1.2.3.4 port 50003
switch(conf-tm-dest)# subscription 100
switch(conf-tm-sub)# snsr-grp 100 sample-interval 5000
switch(conf-tm-sub)# dst-grp 100

次に、sys/intf のデータを 5 秒ごとに、宛先 IP 1.2.3.4 ポート 50003 にストリーミングし、test.pem を使用して検証された GPB エンコーディングを使用してストリームを暗号化するサブスクリプションの作成例を示します。

switch(config)# telemetry
switch(config-telemetry)# certificate /bootflash/test.pem foo.test.google.fr
switch(conf-tm-telemetry)# destination-group 100
switch(conf-tm-dest)# ip address 1.2.3.4 port 50003 protocol gRPC encoding GPB
switch(config-dest)# sensor-group 100
switch(conf-tm-sensor)# path sys/bgp depth 0
switch(conf-tm-sensor)# subscription 100
switch(conf-tm-sub)# snsr-grp 100 sample-interval 5000
switch(conf-tm-sub)# dst-grp 100

この例では、sys/cdp のデータを接続先 IP 1.2.3.4 ポート 50004 に 15 秒ごとにストリーミングするサブスクリプションを作成します。

switch(config)# telemetry
switch(config-telemetry)# sensor-group 100
switch(conf-tm-sensor)# path sys/cdp depth 0
switch(conf-tm-sensor)# destination-group 100
switch(conf-tm-dest)# ip address 1.2.3.4 port 50004
switch(conf-tm-dest)# subscription 100
switch(conf-tm-sub)# snsr-grp 100 sample-interval 15000
switch(conf-tm-sub)# dst-grp 100

この例では、750 秒ごとに show コマンド データのケイデンス ベースのコレクションを作成します。

switch(config)# telemetry
switch(config-telemetry)# destination-group 1
switch(conf-tm-dest)# ip address 172.27.247.72 port 60001 protocol gRPC encoding GPB 
switch(conf-tm-dest)# sensor-group 1
switch(conf-tm-sensor# data-source NX-API
switch(conf-tm-sensor)# path "show system resources" depth 0
switch(conf-tm-sensor)# path "show version" depth 0 
switch(conf-tm-sensor)# path "show environment power" depth 0 
switch(conf-tm-sensor)# path "show environment fan" depth 0 
switch(conf-tm-sensor)# path "show environment temperature" depth 0 
switch(conf-tm-sensor)# path "show process cpu" depth 0 
switch(conf-tm-sensor)# path "show nve peers" depth 0 
switch(conf-tm-sensor)# path "show nve vni" depth 0 
switch(conf-tm-sensor)# path "show nve vni 4002 counters" depth 0 
switch(conf-tm-sensor)# path "show int nve 1 counters" depth 0 
switch(conf-tm-sensor)# path "show policy-map vlan" depth 0 
switch(conf-tm-sensor)# path "show ip access-list test" depth 0 
switch(conf-tm-sensor)# path "show system internal access-list resource utilization" depth 0 
switch(conf-tm-sensor)# subscription 1
switch(conf-tm-sub)# dst-grp 1
switch(conf-tm-dest)# snsr-grp 1 sample-interval 750000

この例では、sys/fm のイベント ベースのサブスクリプションを作成します。sys/fm MO に変更がある場合にのみ、データは接続先にストリーミングされます。

switch(config)# telemetry
switch(config-telemetry)# sensor-group 100
switch(conf-tm-sensor)# path sys/fm depth 0
switch(conf-tm-sensor)# destination-group 100
switch(conf-tm-dest)# ip address 1.2.3.4 port 50005
switch(conf-tm-dest)# subscription 100
switch(conf-tm-sub)# snsr-grp 100 sample-interval 0
switch(conf-tm-sub)# dst-grp 100

動作中に、サンプル間隔を変更することで、センサー グループを周波数ベースからイベント ベースに変更したり、イベント ベースから周波数ベースに変更したりできます。この例では、センサー グループを前の例から頻度ベースに変更します。次のコマンドの後、テレメトリ アプリケーションは 7 秒ごとに sys/fm データの接続先へのストリーミングを開始します。

switch(config)# telemetry
switch(config-telemetry)# subscription 100
switch(conf-tm-sub)# snsr-grp 100 sample-interval 7000

複数のセンサー グループと接続先を 1 つのサブスクリプションにリンクできます。この例のサブスクリプションは、イーサネット ポート 1 / 1 のデータを 4 つの異なる接続先に 10 秒ごとにストリーミングします。

switch(config)# telemetry
switch(config-telemetry)# sensor-group 100
switch(conf-tm-sensor)# path sys/intf/phys-[eth1/1] depth 0
switch(conf-tm-sensor)# destination-group 100
switch(conf-tm-dest)# ip address 1.2.3.4 port 50004
switch(conf-tm-dest)# ip address 1.2.3.4 port 50005
switch(conf-tm-sensor)# destination-group 200
switch(conf-tm-dest)# ip address 5.6.7.8 port 50001 protocol HTTP encoding JSON
switch(conf-tm-dest)# ip address 1.4.8.2 port 60003
switch(conf-tm-dest)# subscription 100
switch(conf-tm-sub)# snsr-grp 100 sample-interval 10000
switch(conf-tm-sub)# dst-grp 100
switch(conf-tm-sub)# dst-grp 200

次に、センサー グループに複数のパスを含め、接続先グループに複数の接続先プロファイルを含め、サブスクリプションを複数のセンサー グループと宛先グループにリンクできる例を表示します。

switch(config)# telemetry
switch(config-telemetry)# sensor-group 100
switch(conf-tm-sensor)# path sys/intf/phys-[eth1/1] depth 0
switch(conf-tm-sensor)# path sys/epId-1 depth 0
switch(conf-tm-sensor)# path sys/bgp/inst/dom-default depth 0

switch(config-telemetry)# sensor-group 200
switch(conf-tm-sensor)# path sys/cdp depth 0
switch(conf-tm-sensor)# path sys/ipv4 depth 0

switch(config-telemetry)# sensor-group 300
switch(conf-tm-sensor)# path sys/fm depth 0
switch(conf-tm-sensor)# path sys/bgp depth 0

switch(conf-tm-sensor)# destination-group 100
switch(conf-tm-dest)# ip address 1.2.3.4 port 50004
switch(conf-tm-dest)# ip address 4.3.2.5 port 50005

switch(conf-tm-dest)# destination-group 200
switch(conf-tm-dest)# ip address 5.6.7.8 port 50001

switch(conf-tm-dest)# destination-group 300
switch(conf-tm-dest)# ip address 1.2.3.4 port 60003

switch(conf-tm-dest)# subscription 600
switch(conf-tm-sub)# snsr-grp 100 sample-interval 7000
switch(conf-tm-sub)# snsr-grp 200 sample-interval 20000
switch(conf-tm-sub)# dst-grp 100
switch(conf-tm-sub)# dst-grp 200

switch(conf-tm-dest)# subscription 900
switch(conf-tm-sub)# snsr-grp 200 sample-interval 7000
switch(conf-tm-sub)# snsr-grp 300 sample-interval 0
switch(conf-tm-sub)# dst-grp 100
switch(conf-tm-sub)# dst-grp 300

この例に示すように、show running-config telemetry コマンドを使用してテレメトリ構成を確認できます。

switch(config)# telemetry 
switch(config-telemetry)# destination-group 100
switch(conf-tm-dest)# ip address 1.2.3.4 port 50003
switch(conf-tm-dest)# ip address 1.2.3.4 port 50004
switch(conf-tm-dest)# end
switch# show run telemetry 

!Command: show running-config telemetry
!Time: Thu Oct 13 21:10:12 2016

version 7.0(3)I5(1)
feature telemetry

telemetry
destination-group 100
ip address 1.2.3.4 port 50003 protocol gRPC encoding GPB 
ip address 1.2.3.4 port 50004 protocol gRPC encoding GPB 

次の NX-OS CLI show コマンドを使用して、テレメトリの構成、統計情報、エラー、およびセッション情報を表示します。

show telemetry yang direct-path cisco-nxos-device

このコマンドは、他のパスよりもパフォーマンスが向上するように直接エンコードされた YANG パスを表示します。

switch# show telemetry yang direct-path cisco-nxos-device
) Cisco-NX-OS-device:System/lldp-items
2) Cisco-NX-OS-device:System/acl-items
3) Cisco-NX-OS-device:System/mac-items
4) Cisco-NX-OS-device:System/intf-items
5) Cisco-NX-OS-device:System/procsys-items/sysload-items
6) Cisco-NX-OS-device:System/ospf-items
7) Cisco-NX-OS-device:System/procsys-items
8) Cisco-NX-OS-device:System/ipqos-items/queuing-items/policy-items/out-items
9) Cisco-NX-OS-device:System/mac-items/static-items
10) Cisco-NX-OS-device:System/ch-items
11) Cisco-NX-OS-device:System/cdp-items
12) Cisco-NX-OS-device:System/bd-items
13) Cisco-NX-OS-device:System/eps-items
14) Cisco-NX-OS-device:System/ipv6-items

show telemetry control database

次に、テレメトリの構成を反映している内部データベースのコマンドを表示します。

switch# show telemetry control database ?
  <CR>                
  >                   Redirect it to a file
  >>                  Redirect it to a file in append mode
  destination-groups  Show destination-groups
  destinations        Show destinations
  sensor-groups       Show sensor-groups
  sensor-paths        Show sensor-paths
  subscriptions       Show subscriptions
  |                   Pipe command output to filter

switch# show telemetry control database 

Subscription Database size = 1

--------------------------------------------------------------------------------
Subscription ID      Data Collector Type 
--------------------------------------------------------------------------------
100                  DME NX-API                

Sensor Group Database size = 1

--------------------------------------------------------------------------------
Sensor Group ID  Sensor Group type  Sampling interval(ms)  Linked subscriptions 
--------------------------------------------------------------------------------
100              Timer              10000(Running)         1                    

Sensor Path Database size = 1

--------------------------------------------------------------------------------
Subscribed Query Filter  Linked Groups  Sec Groups  Retrieve level  Sensor Path 
--------------------------------------------------------------------------------
No                       1              0           Full            sys/fm      

Destination group Database size = 2

--------------------------------------------------------------------------------
Destination Group ID  Refcount  
--------------------------------------------------------------------------------
100                   1         

Destination Database size = 2

--------------------------------------------------------------------------------
Dst IP Addr     Dst Port   Encoding   Transport  Count     
--------------------------------------------------------------------------------
192.168.20.111       12345      JSON       HTTP       1
192.168.20.123	50001      GPB        gRPC       1    

show telemetry control database sensor-paths

このコマンドは、テレメトリ設定のセンサーパスの詳細を表示します。これには、エンコーディング、収集、トランスポート、およびストリーミングのカウンタが含まれます。

switch(conf-tm-sub)# show telemetry control database sensor-paths
Sensor Path Database size = 4
----------------------------------------------------------------------------------------------------
Row ID     Subscribed Linked Groups  Sec Groups  Retrieve level  Path(GroupId) : Query : Filter
----------------------------------------------------------------------------------------------------
1          No         1              0           Full            sys/cdp(1) : NA : NA

GPB Encoded Data size in bytes (Cur/Min/Max): 0/0/0
JSON Encoded Data size in bytes (Cur/Min/Max): 65785/65785/65785
Collection Time in ms (Cur/Min/Max): 10/10/55
Encoding Time in ms (Cur/Min/Max): 8/8/9
Transport Time in ms (Cur/Min/Max): 0/0/0
Streaming Time in ms (Cur/Min/Max): 18/18/65

2          No         1              0           Self            show module(2) : NA : NA
GPB Encoded Data size in bytes (Cur/Min/Max): 0/0/0
JSON Encoded Data size in bytes (Cur/Min/Max): 1107/1106/1107
Collection Time in ms (Cur/Min/Max): 603/603/802
Encoding Time in ms (Cur/Min/Max): 0/0/0
Transport Time in ms (Cur/Min/Max): 0/0/1
Streaming Time in ms (Cur/Min/Max): 605/605/803

3          No         1              0           Full            sys/bgp(1) : NA : NA
GPB Encoded Data size in bytes (Cur/Min/Max): 0/0/0
JSON Encoded Data size in bytes (Cur/Min/Max): 0/0/0
Collection Time in ms (Cur/Min/Max): 0/0/44
Encoding Time in ms (Cur/Min/Max): 0/0/0
Transport Time in ms (Cur/Min/Max): 0/0/0
Streaming Time in ms (Cur/Min/Max): 1/1/44

4          No         1              0           Self            show version(2) : NA : NA
GPB Encoded Data size in bytes (Cur/Min/Max): 0/0/0
JSON Encoded Data size in bytes (Cur/Min/Max): 2442/2441/2442
Collection Time in ms (Cur/Min/Max): 1703/1703/1903
Encoding Time in ms (Cur/Min/Max): 0/0/0
Transport Time in ms (Cur/Min/Max): 0/0/0
Streaming Time in ms (Cur/Min/Max): 1703/1703/1904

switch(conf-tm-sub)#

show telemetry control stats

このコマンドは、テレメトリの構成についての内部データベースの統計を表示します。

switch# show telemetry control stats 
show telemetry control stats entered

--------------------------------------------------------------------------------
Error Description                                            Error Count 
--------------------------------------------------------------------------------
Chunk allocation failures                                    0
Sensor path Database chunk creation failures                 0
Sensor Group Database chunk creation failures                0
Destination Database chunk creation failures                 0
Destination Group Database chunk creation failures           0
Subscription Database chunk creation failures                0
Sensor path Database creation failures                       0
Sensor Group Database creation failures                      0
Destination Database creation failures                       0
Destination Group Database creation failures                 0
Subscription Database creation failures                      0
Sensor path Database insert failures                         0
Sensor Group Database insert failures                        0
Destination Database insert failures                         0
Destination Group Database insert failures                   0
Subscription insert to Subscription Database failures        0
Sensor path Database delete failures                         0
Sensor Group Database delete failures                        0
Destination Database delete failures                         0
Destination Group Database delete failures                   0
Delete Subscription from Subscription Database failures      0
Sensor path delete in use                                    0
Sensor Group delete in use                                   0
Destination delete in use                                    0
Destination Group delete in use                              0
Delete destination(in use) failure count                     0
Failed to get encode callback                                0
Sensor path Sensor Group list creation failures              0
Sensor path prop list creation failures                      0
Sensor path sec Sensor path list creation failures           0
Sensor path sec Sensor Group list creation failures          0
Sensor Group Sensor path list creation failures              0
Sensor Group Sensor subs list creation failures              0
Destination Group subs list creation failures                0
Destination Group Destinations list creation failures        0
Destination Destination Groups list creation failures        0
Subscription Sensor Group list creation failures             0
Subscription Destination Groups list creation failures       0
Sensor Group Sensor path list delete failures                0
Sensor Group Subscriptions list delete failures              0
Destination Group Subscriptions list delete failures         0
Destination Group Destinations list delete failures          0
Subscription Sensor Groups list delete failures              0
Subscription Destination Groups list delete failures         0
Destination Destination Groups list delete failures          0
Failed to delete Destination from Destination Group          0
Failed to delete Destination Group from Subscription         0
Failed to delete Sensor Group from Subscription              0
Failed to delete Sensor path from Sensor Group               0
Failed to get encode callback                                0
Failed to get transport callback                             0
switch#  Destination Database size = 1

--------------------------------------------------------------------------------
Dst IP Addr     Dst Port   Encoding   Transport  Count     
--------------------------------------------------------------------------------
192.168.20.123	50001      GPB        gRPC       1    

show telemetry data collector brief

このコマンドは、データ収集に関する簡単な統計情報を表示します。

switch# show telemetry data collector brief 

----------------------------------------------------------------------
Collector Type       Successful Collections     Failed Collections        
----------------------------------------------------------------------
DME                   143                        0                        

show telemetry data collector details

このコマンドは、すべてのセンサー パスの詳細を含む、データ収集に関する詳細な統計情報を表示します。

switch# show telemetry data collector details 

--------------------------------------------------------------------------------
Succ Collections      Failed Collections     Sensor Path
--------------------------------------------------------------------------------
150                   0                      sys/fm

show telemetry event collector errors

このコマンドは、イベント コレクションに関するエラー統計情報を表示します。

switch# show telemetry event collector errors 

--------------------------------------------------------------------------------
Error Description                                  Error Count 
--------------------------------------------------------------------------------
APIC-Cookie Generation Failures                    - 0
Authentication Failures                            - 0
Authentication Refresh Failures                    - 0
Authentication Refresh Timer Start Failures        - 0
Connection Timer Start Failures                    - 0
Connection Attempts                                - 3
Dme Event Subscription Init Failures               - 0
Event Data Enqueue Failures                        - 0
Event Subscription Failures                        - 0
Event Subscription Refresh Failures                - 0
Pending Subscription List Create Failures          - 0
Subscription Hash Table Create Failures            - 0
Subscription Hash Table Destroy Failures           - 0
Subscription Hash Table Insert Failures            - 0
Subscription Hash Table Remove Failures            - 0
Subscription Refresh Timer Start Failures          - 0
Websocket Connect Failures                         - 0

show telemetry event collector stats

このコマンドは、すべてのセンサー パスの内訳を含むイベント コレクションに関する統計情報を表示します。

switch# show telemetry event collector stats 

--------------------------------------------------------------------------------
Collection Count  Latest Collection Time    Sensor Path
--------------------------------------------------------------------------------

show telemetry control pipeline stats

このコマンドは、テレメトリ パイプラインの統計情報を表示します。

switch# show telemetry pipeline stats 
Main Statistics:
    Timers:
        Errors:
            Start Fail        =     0

    Data Collector:
        Errors:
            Node Create Fail  =     0

    Event Collector:
        Errors:
            Node Create Fail  =     0    Node Add Fail     =     0
            Invalid Data      =     0

    

Queue Statistics:
    Request Queue:
        High Priority Queue:
            Info:
                Actual Size       =    50    Current Size      =     0
                Max Size          =     0    Full Count        =     0

            Errors:
                Enqueue Error     =     0    Dequeue Error     =     0

        Low Priority Queue:
            Info:
                Actual Size       =    50    Current Size      =     0
                Max Size          =     0    Full Count        =     0

            Errors:
                Enqueue Error     =     0    Dequeue Error     =     0

    Data Queue:
        High Priority Queue:
            Info:
                Actual Size       =    50    Current Size      =     0
                Max Size          =     0    Full Count        =     0

            Errors:
                Enqueue Error     =     0    Dequeue Error     =     0

        Low Priority Queue:
            Info:
                Actual Size       =    50    Current Size      =     0
                Max Size          =     0    Full Count        =     0

            Errors:
                Enqueue Error     =     0    Dequeue Error     =     0

show telemetry transport

次に、構成されているすべての転送セッションの例を表示します。

switch# show telemetry transport 

Session Id      IP Address      Port       Encoding   Transport  Status    
-----------------------------------------------------------------------------------
0               192.168.20.123   50001      GPB        gRPC       Connected

show telemetry transport <session-id>

次のコマンドでは、特定の転送セッションの詳細なセッション情報が表示されます。

switch# show telemetry transport 0 

Session Id:          0                   
IP Address:Port      192.168.20.123:50001 
Encoding:            GPB                  
Transport:           gRPC                
Status:              Disconnected        
Last Connected:      Fri Sep 02 11:45:57.505 UTC

Tx Error Count:      224                 
Last Tx Error:       Fri Sep 02 12:23:49.555 UTC

switch# show telemetry transport 1

Session Id:          1                   
IP Address:Port      10.30.218.56:51235 Encoding:            JSON                 
Transport:           HTTP                
Status:              Disconnected        
Last Connected:      Never               

Tx Error Count:      3                   
Last Tx Error:       Wed Apr 19 15:56:51.617 PDT

次に、IPv6 エントリの出力例を示します。

switch# show telemetry transport 0 
Session Id: 0
IP Address:Port [10:10::1]:8000
Transport: GRPC
Status: Idle
Last Connected: Never
Last Disconnected: Never
Tx Error Count: 0
Last Tx Error: None
Event Retry Queue Bytes: 0
Event Retry Queue Size: 0
Timer Retry Queue Bytes: 0
Timer Retry Queue Size: 0
Sent Retry Messages: 0
Dropped Retry Messages: 0

show telemetry transport <session-id> stats

次に、特定の転送セッションの詳細のコマンドを示します。

switch# show telemetry transport 0 stats 

Session Id:          0                   
IP Address:Port      192.168.20.123:50001 
Encoding:            GPB                 
Transport:           GRPC                
Status:              Connected           
Last Connected:      Mon May 01 11:29:46.912 PST
Last Disconnected:   Never               
Tx Error Count:      0                   
Last Tx Error:       None                

show telemetry transport <session-id> errors

次のコマンドでは、特定の転送セッションの詳細なエラーの統計情報が表示されます。

switch# show telemetry transport 0 errors 

Session Id:                    0                   
Connection Stats                                   
   Connection Count            1                   
   Last Connected:             Mon May 01 11:29:46.912 PST
   Disconnect Count            0                   
   Last Disconnected:          Never               
Transmission Stats                                 
   Transmit Count:             1225                
   Last TX time:               Tue May 02 11:40:03.531 PST
   Min Tx Time:                7                   ms
   Max Tx Time:                1760                ms
   Avg Tx Time:                500                 ms

show telemetry control databases sensor-paths

これらの次の構成手順により、次の show telemetry control databases sensor-paths コマンド出力が得られます。

feature telemetry
 
telemetry
  destination-group 1
    ip address 172.25.238.13 port 50600 protocol gRPC encoding GPB
  sensor-group 1
    path sys/cdp depth unbounded
    path sys/intf depth unbounded
    path sys/mac depth 0
  subscription 1
    dst-grp 1
    snsr-grp 1 sample-interval 1000

コマンド出力。

switch# show telemetry control databases sensor-paths

Sensor Path Database size = 3
--------------------------------------------------------------------------------
--------------------
Row ID     Subscribed Linked Groups  Sec Groups  Retrieve level  Path(GroupId) :
Query : Filter
--------------------------------------------------------------------------------
--------------------
1          No         1              0           Full            sys/cdp(1) : NA
: NA
GPB Encoded Data size in bytes (Cur/Min/Max): 30489/30489/30489
JSON Encoded Data size in bytes (Cur/Min/Max): 0/0/0
CGPB Encoded Data size in bytes (Cur/Min/Max): 0/0/0
Collection Time in ms (Cur/Min/Max): 6/5/54
Encoding Time in ms (Cur/Min/Max): 5/5/6
Transport Time in ms (Cur/Min/Max): 1027/55/1045
Streaming Time in ms (Cur/Min/Max): 48402/5/48402
 
2          No         1              0           Full            sys/intf(1) : N
A : NA
GPB Encoded Data size in bytes (Cur/Min/Max): 539466/539466/539466
JSON Encoded Data size in bytes (Cur/Min/Max): 0/0/0
CGPB Encoded Data size in bytes (Cur/Min/Max): 0/0/0
Collection Time in ms (Cur/Min/Max): 66/64/114
Encoding Time in ms (Cur/Min/Max): 91/90/92
Transport Time in ms (Cur/Min/Max): 4065/4014/5334
Streaming Time in ms (Cur/Min/Max): 48365/64/48365
 
3          No         1              0           Self            sys/mac(1) : NA
: NA
GPB Encoded Data size in bytes (Cur/Min/Max): 247/247/247
JSON Encoded Data size in bytes (Cur/Min/Max): 0/0/0
CGPB Encoded Data size in bytes (Cur/Min/Max): 0/0/0
Collection Time in ms (Cur/Min/Max): 1/1/47
Encoding Time in ms (Cur/Min/Max): 1/1/1
Transport Time in ms (Cur/Min/Max): 4/1/6
Streaming Time in ms (Cur/Min/Max): 47369/1/47369

show telemetry transport sessions

switch# show telemetry transport sessions​
switch# show telemetry transport stats​
switch# show telemetry transport errors​
switch# show telemetry transport all​

switch# show telemetry transport sessions​
Session Id:          0                   ​
IP Address:Port      172.27.254.13:50004 ​
Transport:           GRPC                ​
Status:              Transmit Error      ​
SSL Certificate:     trustpoint1                   ​
Last Connected:      Never               ​
Last Disconnected:   Never                ​
Tx Error Count:      2                   ​
Last Tx Error:       Wed Aug 19 23:32:21.749 UTC​
…​
Session Id:          4                 ​
IP Address:Port      172.27.254.13:50006 ​
Transport:           UDP              

テレメトリ エフェメラル イベント

sensor-group 1​
path sys/accounting/log query-condition query-target=subtree&complete-mo=yes&notify-interval=1

sys/pim/inst/routedb-route, sys/pim/pimifdb-adj, sys/pim/pimifdb-prop​
sys/igmp/igmpifdb-prop, sys/igmp/inst/routedb, sys/igmpsnoop/inst/dom/db-exptrack, ​
sys/igmpsnoop/inst/dom/db-group, sys/igmpsnoop/inst/dom/db-mrouter​
sys/igmpsnoop/inst/dom/db-querier, sys/igmpsnoop/inst/dom/db-snoop​

ログとトレース情報を表示するには、次の NX-OS CLI コマンドを使用します。

テクニカル サポート テレメトリを表示

この NX-OS CLI コマンドは、テクニカル サポート ログからテレメトリ ログの内容を収集します。この例では、コマンド出力がブートフラッシュのファイルにリダイレクトされます。

switch# show tech-support telemetry > bootflash:tmst.log

宛先へのストリーミング パス

この例では、パス sys/cdp および sys/ipv4 を接続先 1.2.3.4 ポート 50001 に 5 秒ごとにストリーミングするサブスクリプションを作成します。

POST https://192.168.20.123/api/node/mo/sys/tm.json

Payload:
{
    "telemetryEntity": {
        "attributes": {
            "dn": "sys/tm"
        },
        "children": [{
            "telemetrySensorGroup": {
                "attributes": {
                    "id": "10",
                    "rn": "sensor-10"
                },  "children": [{
                    "telemetryRtSensorGroupRel": {
                        "attributes": {
                            "rn": "rtsensorGroupRel-[sys/tm/subs-30]",
                            "tCl": "telemetrySubscription",
                            "tDn": "sys/tm/subs-30"
                        }
                    }
                }, {
                    "telemetrySensorPath": {
                        "attributes": {
                            "path": "sys/cdp",
                            "rn": "path-[sys/cdp]",
                            "excludeFilter": "",
                            "filterCondition": "",
                            "secondaryGroup": "0",
                            "secondaryPath": "",
                            "depth": "0"
                        }
                    }
                }, {
                    "telemetrySensorPath": {
                        "attributes": {
                            "path": "sys/ipv4",
                            "rn": "path-[sys/ipv4]",
                            "excludeFilter": "",
                            "filterCondition": "",
                            "secondaryGroup": "0",
                            "secondaryPath": "",
                            "depth": "0"
                        }
                    }
                }]
            }
        }, {
            "telemetryDestGroup": {
                "attributes": {
                    "id": "20",
                    "rn": "dest-20"
                },
                "children": [{
                    "telemetryRtDestGroupRel": {
                        "attributes": {
                            "rn": "rtdestGroupRel-[sys/tm/subs-30]",
                            "tCl": "telemetrySubscription",
                            "tDn": "sys/tm/subs-30"
                        }
                    }
                }, {
                    "telemetryDest": {
                        "attributes": {
                            "addr": "1.2.3.4",
                            "enc": "GPB",
                            "port": "50001",
                            "proto": "gRPC",
                            "rn": "addr-[1.2.3.4]-port-50001"
                        }
                    }
                }]
            }
        }, {
            "telemetrySubscription": {
                "attributes": {
                    "id": "30",
                    "rn": "subs-30"
                },
                "children": [{
                    "telemetryRsDestGroupRel": {
                        "attributes": {
                            "rType": "mo",
                            "rn": "rsdestGroupRel-[sys/tm/dest-20]",
                            "tCl": "telemetryDestGroup",
                            "tDn": "sys/tm/dest-20",
                            "tType": "mo"
                        }
                    }
                }, {
                    "telemetryRsSensorGroupRel": {
                        "attributes": {
                            "rType": "mo",
                            "rn": "rssensorGroupRel-[sys/tm/sensor-10]",
                            "sampleIntvl": "5000",
                            "tCl": "telemetrySensorGroup",
                            "tDn": "sys/tm/sensor-10",
                            "tType": "mo"
                        }
                    }
                }]
            }
        }]
    }
}

BGP 通知のフィルタ条件

次のペイロードの例では、telemetrySensorPath MO の filterCondition 属性に従って BFP 機能が無効になっているときにトリガーされる通知を有効にします。データは 10.30.217.80 ポート 50055 にストリーミングされます。

POST  https://192.168.20.123/api/node/mo/sys/tm.json

Payload:
{
  "telemetryEntity": {
    "children": [{
      "telemetrySensorGroup": {
        "attributes": {
          "id": "10"
        }
        "children": [{
          "telemetrySensorPath": {
            "attributes": {
              "excludeFilter": "",
              "filterCondition": "eq(fmBgp.operSt,\"disabled\")",
              "path": "sys/fm/bgp",
              "secondaryGroup": "0",
              "secondaryPath": "",
              "depth": "0"
            }
          }
        }
        ]
      }
    },
    {
      "telemetryDestGroup": {
        "attributes": {
          "id": "20"
        }
        "children": [{
          "telemetryDest": {
            "attributes": {
              "addr": "10.30.217.80",
              "port": "50055",
              "enc": "GPB",
              "proto": "gRPC"
            }
          }
        }
        ]
      }
    },
    {
      "telemetrySubscription": {
        "attributes": {
          "id": "30"
        }
        "children": [{
          "telemetryRsSensorGroupRel": {
            "attributes": {
              "sampleIntvl": "0",
              "tDn": "sys/tm/sensor-10"
            }
          }
        },
        {
          "telemetryRsDestGroupRel": {
            "attributes": {
              "tDn": "sys/tm/dest-20"
            }
          }
        }
        ]
      }
    }
    ]
  }
}

テレメトリ構成のための Postman コレクションの使用

Postman コレクションの例は、テレメトリ機能の構成を開始する簡単な方法であり、1 つのペイロードですべてのテレメトリ CLI に相当するものを実行できます。好みのテキスト エディターを使用して前述のリンクのファイルを変更し、ペイロードをニーズに合わせて更新してから、Postman でコレクションを開いてコレクションを実行します。

テレメトリ アプリケーションは、次の構造を持つ DME でモデル化されます。

model
|----package [name:telemetry]
    |  @name:telemetry
    |----objects
         |----mo [name:Entity]
              |    @name:Entity
              |      @label:Telemetry System
              |--property 
              |    @name:adminSt
              |      @type:AdminState
              |
              |----mo [name:SensorGroup]
              |    |    @name:SensorGroup
              |    |      @label:Sensor Group
              |    |--property
              |    |    @name:id [key]
              |    |      @type:string:Basic
              |    |
              |    |----mo [name:SensorPath]
              |         |   @name:SensorPath
              |         |     @label:Sensor Path
              |         |--property
              |         |    @name:path [key]
              |         |      @type:string:Basic
              |         |    @name:filterCondition
              |         |      @type:string:Basic
              |         |    @name:excludeFilter
              |         |      @type:string:Basic
              |         |    @name:depth
              |         |      @type:RetrieveDepth
              |
              |----mo [name:DestGroup]
              |    |    @name:DestGroup
              |    |      @label:Destination Group
              |    |--property
              |    |    @name:id
              |    |      @type:string:Basic
              |    |        
              |    |----mo [name:Dest]
              |         |   @name:Dest
              |         |     @label:Destination
              |         |--property
              |         |    @name:addr [key]
              |         |      @type:address:Ip
              |         |    @name:port [key]
              |         |      @type:scalar:Uint16
              |         |    @name:proto
              |         |      @type:Protocol
              |         |    @name:enc
              |         |      @type:Encoding
              |
              |----mo [name:Subscription]
                   |    @name:Subscription
                   |      @label:Subscription
                   |--property
                   |    @name:id
                   |      @type:scalar:Uint64
                   |----reldef
                   |    |  @name:SensorGroupRel
                   |    |    @to:SensorGroup
                   |    |    @cardinality:ntom
                   |    |    @label:Link to sensorGroup entry
                   |    |--property
                   |         @name:sampleIntvl
                   |           @type:scalar:Uint64
                   |
                   |----reldef
                        |  @name:DestGroupRel
                        |    @to:DestGroup
                        |    @cardinality:ntom
                        |    @label:Link to destGroup entry

The following are the guidelines and limitations for the Cloud Scale software telemetry feature:

• For information about supported platforms for Cisco NX-OS prior to release 9.3(x), see the section for Platform Support for Programmability Features in that guide. Starting with Cisco NX-OS release 9.3(x) for information about supported platforms, see the Nexus Switch Platform Matrix.

• For custom client telemetry programs, one message format is supported. Your client programs must comply with this format.

• Beginning with Cisco NX-OS Release 10.3(1)F, software telemetry is supported on the Cisco Nexus 9800 platform switches.

センサー グループのサンプル間隔によって、テレメトリ データがパス ラベルに送信される方法とタイミングが決まります。サンプル間隔は、テレメトリ データを定期的に投票するか、イベントが発生したときにテレメトリ データを収集するように構成できます。

• テレメトリのサンプル間隔がゼロ以外の値に設定されている場合、テレメトリは各サンプル間隔中に環境、インターフェイス、情報技術、および vxlan ラベルのデータを定期的に送信します。

• サンプル間隔がゼロに設定されている場合、環境、インターフェイス、情報技術、vxlan ラベルで動作状態の更新、および MO の作成と削除が発生するとテレメトリはイベント通知を送信します。

データの投票または受信イベントは相互に排他的です。パス ラベルごとに投票またはイベント駆動型テレメトリを構成できます。

テレメトリ パス ラベル機能には、次の注意事項と制約事項があります。

• この機能は、Cisco DME データ 送信元のみをサポートします。

• 同じセンサー グループ内の通常の DME パスとユーザビリティ パスを混在させて一致させることはできません。たとえば、sys/intf と [インターフェイス（interface）] を同じセンサー グループに構成することはできません。また、sys/intf と [interface（インターフェイス）] で同じセンサー グループを構成することはできません。この状況が発生した場合、NX-OS は構成を拒否します。

• oper-speed や counters=[detailed] などのユーザー フィルター キーワードは、[インターフェイス（interface）] パスに対してのみサポートされます。

• この機能は、[深度（depth）]や[フィルター条件（filter-condition）]などの他のセンサー パス オプションをサポートしていません。

• テレメトリ パス ラベルには、パス ラベルの使用に関する次の制限があります。

  • 大文字と小文字が区別されるため、小文字のプレフィックス show で開始する必要があります。

    例：show version は許可されます。ただし、show version または version は使用できません。

  • 次の文字を含めることはできません。

    • ;

    • |

    • " "または' '

  • 次の単語を含めることはできません。

    • telemetry

    • conf t

    • 設定

パス ラベル表示コマンド

show telemetry usability コマンドを使用すると、クエリを発行したときにパス ラベルがたどる個々のパスを表示できます。

コマンドの例

（注）	show telemetry usability all コマンドは、このセクションに示されている個々のコマンドをすべて連結したものです。

switch# show telemetry usability environment
  1) label_name          : environment

     path_name           : sys/ch
     query_type          : poll
     query_condition     : rsp-subtree=full&query-target=subtree&target-subtree-class=eqptPsuSlot,eqptFtSlot,eqptSupCSlot,eqptPsu,eqptFt,eqptSensor,eqptLCSlot

  2) label_name          : environment

     path_name           : sys/ch
     query_type          : event
     query_condition     : rsp-subtree=full&query-target=subtree&query-target-filter=or(or(deleted(),created()),or(and(updated(eqptFan.operSt),ne(eqptFan.operSt,"ok")),and(updated(eqptDimm.operSt),ne(eqptDimm.operSt,"ok")),and(updated(eqptFlash.operSt),ne(eqptFlash.operSt,"ok")),and(updated(eqptSpromSup.operSt),ne(eqptSpromSup.operSt,"ok")),and(updated(eqptSpromLc.operSt),ne(eqptSpromLc.operSt,"ok"))))
switch# 

switch# show telemetry usability interface 
  1) label_name          : interface

     path_name           : sys/intf
     query_type          : poll
     query_condition     : query-target=children&query-target-filter=eq(l1PhysIf.adminSt,"up")&rsp-subtree=children&rsp-subtree-class=rmonEtherStats,rmonIfIn,rmonIfOut,rmonIfHCIn,rmonIfHCOut

  2) label_name          : interface

     path_name           : sys/mgmt-[mgmt0]
     query_type          : poll
     query_condition     : query-target=subtree&query-target-filter=eq(mgmtMgmtIf.adminSt,"up")&rsp-subtree=full&rsp-subtree-class=rmonEtherStats,rmonIfIn,rmonIfOut,rmonIfHCIn,rmonIfHCOut

  3) label_name          : interface

     path_name           : sys/intf
     query_type          : event
     query_condition     : query-target=subtree&query-target-filter=or(or(deleted(),created()),or(and(updated(ethpmPhysIf.operSt),eq(ethpmPhysIf.operSt,"down")),and(updated(ethpmPhysIf.operSt),eq(ethpmPhysIf.operSt,"up")),and(updated(ethpmLbRtdIf.operSt),eq(ethpmLbRtdIf.operSt,"down")),and(updated(ethpmLbRtdIf.operSt),eq(ethpmLbRtdIf.operSt,"up")),and(updated(ethpmAggrIf.operSt),eq(ethpmAggrIf.operSt,"down")),and(updated(ethpmAggrIf.operSt),eq(ethpmAggrIf.operSt,"up")),and(updated(ethpmEncRtdIf.operSt),eq(
ethpmEncRtdIf.operSt,"down")),and(updated(ethpmEncRtdIf.operSt),eq(ethpmEncRtdIf.operSt,"up"))))

  4) label_name          : interface

     path_name           : sys/mgmt-[mgmt0]
     query_type          : event
     query_condition     : query-target=subtree&query-target-filter=or(or(deleted(),created()),or(and(updated(imMgmtIf.operSt),eq(imMgmtIf.operSt,"down")),and(updated(imMgmtIf.operSt),eq(imMgmtIf.operSt,"up"))))
switch#

switch# show telemetry usability resources 
  1) label_name          : resources

     path_name           : sys/proc
     query_type          : poll
     query_condition     : rsp-subtree=full&rsp-foreign-subtree=ephemeral

  2) label_name          : resources

     path_name           : sys/procsys
     query_type          : poll
     query_condition     : query-target=subtree&target-subtree-class=procSystem,procSysCore,procSysCpuSummary,procSysCpu,procIdle,procIrq,procKernel,procNice,procSoftirq,procTotal,procUser,procWait,procSysCpuHistory,procSysLoad,procSysMem,procSysMemFree,procSysMemUsage,procSysMemUsed

  3) label_name          : resources

     path_name           : sys/procsys/sysmem
     query_type          : event
     query_condition     : query-target-filter=and(updated(procSysMem.memstatus),ne(procSysMem.memstatus,"OK"))

switch# 

switch# show telemetry usability vxlan 
  1) label_name          : vxlan

     path_name           : sys/bd
     query_type          : poll
     query_condition     : query-target=subtree&target-subtree-class=l2VlanStats

  2) label_name          : vxlan

     path_name           : sys/eps
     query_type          : poll
     query_condition     : rsp-subtree=full&rsp-foreign-subtree=ephemeral

  3) label_name          : vxlan

     path_name           : sys/eps
     query_type          : event
     query_condition     : query-target=subtree&target-subtree-class=nvoDyPeer

  4) label_name          : vxlan

     path_name           : sys/bgp
     query_type          : event
     query_condition     : query-target=subtree&query-target-filter=or(deleted(),created())

  5) label_name          : vxlan

     path_name           : sys/bgp
     query_type          : event
     query_condition     : query-target=subtree&target-subtree-class=bgpDom,bgpPeer,bgpPeerAf,bgpDomAf,bgpPeerAfEntry,bgpOperRtctrlL3,bgpOperRttP,bgpOperRttEntry,bgpOperAfCtrl

switch#

次の表は、各ソース パスについて、サブスクリプションが最初に作成されたとき（ベースライン）とイベント通知が発生したときにストリーミングされる情報を示しています。

詳細については、Github https://github.com/CiscoDevNet/nx-telemetry-proto を参照してください。

ネイティブ データ 送信元 パス機能には、次の注意事項と制約事項があります。

• RIB、MAC、および隣接関係（アジャセンシー）のネイティブ データ送信元パスからのストリーミングの場合、センサー パス プロパティの更新は、depth 、query-condition あるいは、filter-condition などのカスタム基準をサポートしません。

NX-OS の show telemetry event collector コマンドを使用して、ネイティブ データ ソース パスの統計情報とカウンタ、またはエラーを表示できます。

統計情報の表示

show telemetry event collector stats コマンドを発行して、各ネイティブ データ ソース パスの統計情報とカウンタを表示できます。

エラー カウンタの表示

switch# show telemetry event collector errors

-------------------------------------------------------------------------------
-
Error Description                                  Error Count 
-------------------------------------------------------------------------------
-
Dme Event Subscription Init Failures               - 0
Event Data Enqueue Failures                        - 0
Event Subscription Failures                        - 0
Pending Subscription List Create Failures          - 0
Subscription Hash Table Create Failures            - 0
Subscription Hash Table Destroy Failures           - 0
Subscription Hash Table Insert Failures            - 0
Subscription Hash Table Remove Failures            - 0
switch# 

送信元パスごとに、次のテーブルは、サブスクリプションが最初に作成されるときの「ベースライン」で、そしてイベントの通知が発生するときに、どんな情報がストリーミングされるかを示しています。

syslog パス情報の表示

syslog パスの統計情報とカウンタ、またはエラーを表示するには、Cisco NX-OS の show telemetry event collector コマンドを使用します。

統計情報の表示

show telemetry event collector stats コマンドを入力すると、syslog パスごとの統計情報とカウンタを表示できます。

次に、syslog パスの統計情報の例を示します。

switch# show telemetry event collector stats 

-------------------------------------------------------------------------------- 
Row ID         Collection Count  Latest Collection Time     Sensor Path(GroupId) 
-------------------------------------------------------------------------------- 
1              138               Tue Dec 03 11:20:08.200 PST Cisco-NX-OS-Syslog-oper:syslog(1) 
2              138               Tue Dec 03 11:20:08.200 PST Cisco-NX-OS-Syslog-oper:syslog/messages(1)

エラー カウンタの表示

show telemetry event collector errors コマンドを使用すると、すべての syslog パスのエラーの合計を表示できます。

switch(config-if)# show telemetry event collector errors 

-------------------------------------------------------------------------------- 
Error Description                                  Error Count 
-------------------------------------------------------------------------------- 
Dme Event Subscription Init Failures                       - 0 
Event Data Enqueue Failures                                - 0 
Event Subscription Failures                                - 0 
Pending Subscription List Create Failures                  - 0 
Subscription Hash Table Create Failures                    - 0 
Subscription Hash Table Destroy Failures                   - 0 
Subscription Hash Table Insert Failures                    - 0 
Subscription Hash Table Remove Failures                    - 0 

次に、JSON 出力のサンプルを示します。

172.19.216.13 - - [03/Dec/2019 19:38:50] "POST /network/Cisco-NX-OS-Syslog-oper%3Asyslog%2Fmessages HTTP/1.0" 200 - 
172.19.216.13 - - [03/Dec/2019 19:38:50] "POST /network/Cisco-NX-OS-Syslog-oper%3Asyslog%2Fmessages HTTP/1.0" 200 - 
>>> URL            : /network/Cisco-NX-OS-Syslog-oper%3Asyslog%2Fmessages 
>>> TM-HTTP-VER    : 1.0.0 
>>> TM-HTTP-CNT    : 1 
>>> Content-Type   : application/json 
>>> Content-Length : 578 
    Path => Cisco-NX-OS-Syslog-oper:syslog/messages 
            node_id_str   : task-n9k-1 
            collection_id : 40 
            data_source   : YANG 
            data          : 
[ 
  [ 
    { 
      "message-id": 420 
    }, 
    { 
      "category": "ETHPORT", 
      "group": "ETHPORT", 
      "message-name": "IF_UP", 
      "node-name": "task-n9k-1", 
      "severity": 5, 
      "text": "Interface loopback10 is up ", 
      "time-of-day": "Dec 3 2019 11:38:51", 
      "time-stamp": "1575401931000", 
      "time-zone": "" 
    } 
  ] 
] 

次に KVGPB の出力例を示します。

KVGPB Output:
---Telemetry msg received @ 18:22:04 UTC
 
Read frag:1 size:339 continue to block on read..
 
All the fragments:1 read successfully total size read:339
 
node_id_str: "task-n9k-1"
 
subscription_id_str: "1"
 
collection_id: 374
 
data_gpbkv {
 
  fields {
 
    name: "keys"
 
    fields {
 
      name: "message-id"
 
      uint32_value: 374
 
    }
 
  }
 
  fields {
 
    name: "content"
 
    fields {
 
      fields {
 
        name: "node-name"
 
        string_value: "task-n9k-1"
 
      }
 
      fields {
 
        name: "time-of-day"
 
        string_value: "Jun 26 2019 18:20:21"
 
      }
 
      fields {
 
        name: "time-stamp"
 
        uint64_value: 1574293838000
 
      }
 
      fields {
 
        name: "time-zone"
 
        string_value: "UTC"
 
      }
 
      fields {
 
        name: "process-name"
 
        string_value: ""
 
      }
 
      fields {
 
        name: "category"
 
        string_value: "VSHD"
 
      }
 
      fields {
 
        name: "group"
 
        string_value: "VSHD"
 
      }
 
      fields {
 
        name: "message-name"
 
        string_value: "VSHD_SYSLOG_CONFIG_I"
 
      }
 
      fields {
 
        name: "severity"
 
        uint32_value: 5
 
      }
 
      fields {
 
        name: "text"
 
        string_value: "Configured from vty by admin on console0"
 
      }
 
    }
 
  }
 
}