Empty Virtual Service packet capture generated when Controller version is 31.1.1 with Older Service Engines version 30.x and 22.x

Products

• VMware Avi Load Balancer

Issue/Introduction

• A problem exists where Virtual Service packet captures are created but remain empty when a Controller running version 31.1.1 manages Service Engines running older versions, such as 30.x or 22.x.
• The issue stems from the Controller's attempt to apply packet capture configurations with IP filters that are not supported by these older Service Engine versions

Cause

 

• The issue occurred because the Controller, running version 31.1.1, attempted to apply incompatible packet capture settings (capture_ip filter) to Service Engines running older versions (30.x and 22.x).
• This incompatibility prevented the Service Engines from capturing any packet data for the virtual service.

Resolution

Work Around:

• Option1: Upgrade the Service Engine on 31.1.1 Version (Same as Controller Version)
• Option 2: Take a packet capture from CLI only
  
  Step1: Login into Controller Leader Node
  Step2: Login into shell
  Step3: Remove capture_ip setting from debug vs <vs-name>
  

  // Remove capture_ip flag from Debug VS
  
  admin@:~$ sudo -i
  [sudo] password for admin:
  root@:~# shell
  [admin:]: > debug virtualservice <vs-name>
  [admin:]: debugvirtualservice> latency_audit_filters
  [admin:]: debugvirtualservice:latency_audit_filters> no capture_ip
  [admin:]: debugvirtualservice:latency_audit_filters> save
  [admin:]: debugvirtualservice> capture_filters
  [admin:]: debugvirtualservice:capture_filters> no capture_ip
  [admin:]: debugvirtualservice:capture_filters> save
  [admin:]: debugvirtualservice>save
  [admin:]: >
  

  Step4: Enable / Disable Virtual Service Capture from CLI

  // Enable(Start) VS Capture from CLI
  [admin:]: > debug virtualservice <vs-name>
  [admin:]: debugvirtualservice> capture
  [admin:]: debugvirtualservice> save
  
  This will enable capture then go to the UI > Operations>Traffic Capture and you will be able to see the progress bar getting updated.
  
  // Disable(Stop) VS Capture from CLI
  [admin:]: > debug virtualservice <vs-name>
  [admin:]: debugvirtualservice> no capture
  [admin:]: debugvirtualservice> save

   

Fix Version

• 30.2.3
• 31.2.1