Guidelines for Collecting Metrics from Skylight Elements
  • 13 Aug 2024
  • 3 Minutes to read
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Guidelines for Collecting Metrics from Skylight Elements

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Article summary

The Metrics Collection feature allows Legacy orchestrator to collect performance metrics from Provider Connectivity Assurance Sensors via dedicated data streams.

This article provides engineering guidelines related to metrics collection.

Provider Connectivity Assurance Sensors - Firmware Version Required

The types of performance metrics that can be collected by Legacy orchestrator depend on the Assurance Sensor from which the data is being collected and on the firmware version that is currently installed on the Assurance Sensor.

The collection periods supported on Assurance Sensors fall into two categories:

  • High-resolution collection periods: 30 seconds, 10 seconds, 5 seconds, 1 second.

  • Low-resolution collection periods:  60 seconds or longer.

The following table indicates the firmware version required to support low-resolution and high-resolution collection periods on various Assurance Sensors. NA indicates the metrics type is not available on the Assurance Sensor.

Firmware Version Required on Assurance Sensors for low-resolution collection period / for high-resolution period

Metrics type

TE

FS 1G

GT

FS 10G

CE-NE

LT

LX

GX

FSX

Assurance Sensor Control

Policy

6.1.0.4 / 6.3.1

1.0 / 1.1

7.1.2

1.0 / 1.1

6.1.0.4 / 6.3.1

7.1.2

7.9

7.4

NA

NA

PAA

6.1.0.4 / 6.3.1

1.0 / 1.1

7.1.2

1.0 / 1.1

6.1.0.4 / 6.3.1

7.1.2

7.9

7.4

2.1

NA

Regulators

6.1.0.4 / 6.3.1

1.0 / 1.1

7.1.2

1.0 / 1.1

6.1.0.4 / 6.3.1

7.1.2

7.9

7.4

NA

NA

Port Statistics

6.4.1 / 6.4.1

NA

7.1.2

NA

6.4.1 / 6.4.1

7.1.2

7.9

7.4

2.1

NA

Flowmeter

NA

1.1 / 1.1

NA

1.1 / 1.1

NA

NA

NA

NA

2.1

2.5

DMM, SLM & PL

6.1.0.4 / NA

1.0 / NA

7.1.2

1.0 / NA

6.1.0.4 / NA

7.1.2

7.9

7.4

NA

NA

SA and SA Metrics

6.1.0.4 / NA

1.0 / NA

7.1.2

1.0 / NA

6.1.0.4 / NA

7.1.2

7.9

7.4

NA

NA

TWAMP

NA

NA

7.1.2

NA

6.4 / NA

7.1.2

7.9

7.4

NA

NA

Shaper Statistics

NA

NA

7.1.2

NA

NA

7.1.2

7.9

7.4

NA

NA

System Health

NA

NA

7.7

NA

NA

7.7

7.9

7.7

NA

NA

SFTP

NA

NA

7.7

NA

NA

7.7

7.9

7.7

NA

NA

Metrics Objects Supported per Device

A metrics object is an instance of a certain type of metric that is collected on an Assurance Sensor. The two tables in this section indicate the number of metrics objects that can be set up on different Assurance Sensors (or on a port of an Assurance Sensor).

Here are some notes about the information presented in the following tables:

  • SOAM = PAA, TWAMP, DMM, PL, SA, SA Metrics, SLM

  • Flowmeter is only available on FS elements (as of version 1.0).

  • For port statistics, throughput metrics are only available on GT, LT and LX Assurance Sensors. Assurance Sensor limitations on the number of metrics objects still apply.

  • Sub-minute metrics can be collected on FS elements (version 1.0 and above) and 1G/10G Assurance Sensors (GT, LT, LX) (version 6.3.1 and above).

Maximum Metrics Objects per Port of an Assurance Sensor

Type of Metrics Object (collection period)

TE / TE-SFS 1G

TE-R / TE-RS

GT / GT-S

GX

CE / FS 10G

NE

LT/LT-S/LX

1G

LT/LT-S/LX 10G

FSX

Assurance Sensor Control

Policies(1 min+)

16

60

100

100(UNI)

200(NNI)

20

250

100

2000(NNI)

200(UNI)

-

-

Policies (30 sec)

16

60

80

80(UNI)

200(NNI)

20

200

80

200

-

-

Policies (10 sec)

16

35

35

35(UNI)

85(NNI)

20

85

35

85

-

-

Policies (5 sec)

16

25

25

25(UNI)

60(NNI)

20

60

25

60

-

-

Policies (1 sec)

10

10

10

10(UNI)

25(NNI)

10

25

10

25

-

-

Flowmeter

17

-

-

-

21

-

-

-

100

-

Maximum Metrics Objects per Assurance Sensor

Type of Metrics Object (collection period)

TE / TE-SFS 1G

TE-R / TE-RS

GT / GT-S

GX

CE / FS 10G

NE

LT/LT-S/LX

1G

LT/LT-S/LX 10G

FSX

Assurance Sensor Control

Flowmeter

-

-

-

-

-

-

-

-

-

4000

Port

5

5

7

13

5

7

19

19

-

-

Port Shaper

-

-

4

-

-

-

-

Queue Shaper

-

-

6 (per port) 12 (user-assigned)

-

-

-

-

-

-

-

Regulators (1 min+)

15

60

200

400

40

500

1000

1000

-

-

Regulators (30 sec)

15

60

160

160

40

400

815

815

-

-

Regulators (10 sec)

15

35

70

70

35

175

360

360

-

-

Regulators (5 sec)

15

25

50

50

25

125

250

250

-

-

Regulators (1 sec)

10

10

20

20

10

50

100

100

-

-

SOAM (1 min+)

100

100

300

300

100

1000

1000

1000

100

-

SOAM (30 sec)

50

50

150

150

50

500

500

500

100

-

SOAM (10 sec)

30

30

100

100

35

350

350

350

100

-

SOAM (5 sec)

20

20

75

75

25

250

250

250

100

-

SOAM (1 sec)

5

5

30

30

10

100

100

100

100

-

Assurance Sensors Data Retention

Cisco Assurance Sensors can buffer some of the metrics data that they collect locally. Buffering helps avoid loss of data if the Assurance Sensors lose communication with Legacy orchestrator. The data retention capabilities of Assurance Sensors depend on the model, firmware version and configuration. The following tables summarize the data retention capabilities of Assurance Sensors.

Version 6.2 or higher; FS Elements (at version 1.0); FSX Elements (at version 2.0)

Maximum Disconnection Time Without Data Loss

Data Collection Period

FS 1G

TE / TE-S / TE-R / TE-RS

GT / GT-S / GX

FS 10G

NE /CE / LT / LX

FSX

LT/LT-S/LX

1G

15 minutes

150 hours

150 hours

32 hours

32 hours

32 hours

32 hours

Not Available

1 minute

11 hours

11 hours

2 hours

2 hours

2 hours

2 hours

2 hours

30 seconds

9.5 hours

9.5 hours

2 hours

2 hours

2 hours

2 hours

2 hours

10 seconds

5 hours

5 hours

1 hour

1 hour

1 hour

1 hour

1 hour

5 seconds

3.5 hours

3.5 hours

40 minutes

40 minutes

40 minutes

40 minutes

40 minutes

1 second

1.75 hours

1.75 hours

20 minutes

20 minutes

20 minutes

20 minutes

20 minutes

Note: Accedian Skylight elements FS, FSX, TE, NE, CE are all EOL.

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