kentik Kentik Product Updates logo
Back to Homepage Subscribe to Updates

Kentik Product Updates

Latest features, improvements, and product updates on the Kentik Network Intelligence Platform.

Labels

  • All Posts
  • Improvement
  • Hybrid Cloud
  • Core
  • Service Provider
  • UI/UX
  • Synthetics
  • Insights & Alerting
  • DDoS
  • New feature
  • BGP Monitoring
  • MyKentik Portal
  • Agents & Binaries
  • Kentik Map
  • API
  • BETA
  • Flow
  • SNMP
  • NMS
  • AI

Jump to Month

  • June 2025
  • May 2025
  • April 2025
  • March 2025
  • February 2025
  • January 2025
  • December 2024
  • November 2024
  • October 2024
  • August 2024
  • July 2024
  • June 2024
  • May 2024
  • April 2024
  • March 2024
  • February 2024
  • January 2024
  • December 2023
  • November 2023
  • October 2023
  • September 2023
  • August 2023
  • July 2023
  • June 2023
  • May 2023
  • April 2023
  • March 2023
  • February 2023
  • January 2023
  • December 2022
  • November 2022
  • October 2022
  • September 2022
  • August 2022
  • July 2022
  • June 2022
  • May 2022
  • April 2022
  • March 2022
  • February 2022
  • December 2021
  • November 2021
  • October 2021
  • September 2021
  • July 2021
  • June 2021
  • May 2021
  • March 2021
  • February 2021
  • January 2021
  • December 2020
  • October 2020
  • September 2020
  • June 2020
  • February 2020
  • August 2019
  • June 2019
  • April 2019
  • March 2019
  • February 2019
  • January 2019
  • December 2018
  • November 2018
  • September 2018
  • August 2018
  • June 2018
  • May 2018
  • April 2018
  • March 2018
  • February 2018
  • January 2018
  • December 2017
  • November 2017
  • October 2017
  • July 2017
  • June 2017
  • May 2017
  • April 2017
  • March 2017
  • February 2017
  • January 2017
  • December 2016
  • November 2016
  • October 2016
  • April 2016
ImprovementCoreSNMP
2 years ago

SNMP: CPU and Memory utilization for F5 BIG-IP devices

Kentik now supports SNMP collection of the CPU and Memory utilization for F5 BIG-IP devices. Some of the F5 BIG-IP devices do not support flow export features, which means that the collection of the SNMP metrics would require use of Kentik's kproxy with the “bootstrap_devices” option.


The general behavior of the Kentik’s SaaS ingest or Kentik’s Kproxy is that the SNMP metrics collection would only start once the flows are received from the certain device. This behavior can be limiting in some cases and can be changed by the use of the Kproxy’s Bootstrap devices feature. This feature is enable with the use of the-bootstrap_devices command line argument. This argument should provide the comma-separated list of devices’ IDs. For those devices, the Kproxy will start the SNMP metrics collection immediately, without waiting to receive devices’ flows. More information about the Kproxy CLI arguments can be found in our Knowledge Base article: https://kb.kentik.com/v0/Bd04.htm#Bd04-kproxy_CLI_Reference

The Kentik’s Kproxy will determine that the discovered device is F5 BIG-IP by looking for the “big-ip” string in the well-known SNMP sysDescr OID.

The Kproxy would monitor the following 4 Device “Components”, with the use of the SNMP OIDs described below:

  • Name “Global”:
    • MemoryTotal [bytes] - OID Name: sysGlobalHostMemTotal, OID: .1.3.6.1.4.1.3375.2.1.1.2.20.2.0
    • MemoryUsed [bytes] - OID Name: sysGlobalHostMemUsed, OID: .1.3.6.1.4.1.3375.2.1.1.2.20.3.0
    • CPU [percentage] - OID Name: sysGlobalHostCpuUsageRatio5m, OID: .1.3.6.1.4.1.3375.2.1.1.2.20.37.0
  • Name “TMM”:
    • MemoryTotal [bytes]- OID Name: sysStatMemoryTotal, OID: .1.3.6.1.4.1.3375.2.1.1.2.1.44.0
    • MemoryUsed [bytes] - OID Name: sysStatMemoryUsed, OID: .1.3.6.1.4.1.3375.2.1.1.2.1.45.0
    • CPU - value will be 0
  • Name “Other”:
    • MemoryTotal [bytes] - OID Name: sysGlobalHostOtherMemoryTotal, OID: .1.3.6.1.4.1.3375.2.1.1.2.20.44.0
    • MemoryUsed [bytes] - OID Name: sysGlobalHostOtherMemoryUsed, OID: .1.3.6.1.4.1.3375.2.1.1.2.20.45.0
    • CPU - value will be 0
  • Name “Swap”:
    • MemoryTotal [bytes]- OID Name: sysGlobalHostSwapTotal, OID: .1.3.6.1.4.1.3375.2.1.1.2.20.46.0
    • MemoryUsed [bytes] - OID Name: sysGlobalHostSwapUsed, OID: .1.3.6.1.4.1.3375.2.1.1.2.20.47.0
    • CPU - value will be 0

For each component  MemoryFree and MemoryUtilization are calculated from collected MemoryTotal and MemoryUsed metrics. Each component use standard Uptime which is collected at the device level from sysUpTime OID.

The support is available in kproxy starting from version v7.36.0. The example of the Data Explorer query is shown below:


Avatar of authorDuĊĦan Pajin