Kemp Support, how can we help?

The latest application delivery knowledge and expertise at your fingertips.

APM is not receiving data from the Probe





Possible causes of missing data for Application performance monitoring (APM) from the Flowmon Probe.


Product: APM

Version: Any

Platform: Any

Question/Problem Description:

Why there is no data for APM? The green icon for the Probe (APM -> Settings -> Probes) is green, however from Probe statistics is obvious that Probe is not sending any data.

Steps to Reproduce:  
Error Message: /data/bf/log/BlueFerret.log

WARN SnifferTcpHandler - TCPHandler::ProcessPacket - HalfOpen -[530809][SV]: HalfOpen|Closed|Open : data from Server but missing SYN from Client

WARN SnifferTcpHandler - TCPHandler::ProcessPacket - HalfOpen -[530815][CL]: HalfOpen|Open|Closed : data from Client but missing SYN from Server
Defect Number:  
Enhancement Number:  
Cause: Missing SYN packets from client or server.

1. Verify that Flowmon has full visibility of the traffic from application servers.

2. Check the configuration of mirror ports of a VMware Distributed vSwitch (DSwitch).


Deployment guide for VMware:

Choose your version -> Deployment Guide for Virtual Appliances -> Chapter 4.10

Was this article helpful?
0 out of 0 found this helpful