Spectrum OneClick is unable to connect to the VNA host running IPv6

Products

• Network Observability
• Spectrum

Issue/Introduction

When the VNA Wildfly instance is only running IPv6 and IPv4 has been disabled, you are not able to configure the VNA Integration in Spectrum.  The OneClick VNA Integration page shows it was not successful and the OneClick tomcat log file shows a communication error.

 

Resolution

On the VNA machine edit the <VNA_home>/wildfly/bin/standalone.conf file
Modify the VNA_CUSTOM_JAVA_OPTS to replace the java entry for IPv6.  For example:

# Customers should use this to set jvm options they wish to
# preserve across upgrades.
VNA_CUSTOM_JAVA_OPTS="-Djava.net.preferIPv4Stack=true "

Change to be:

# Customers should use this to set jvm options they wish to
# preserve across upgrades.
VNA_CUSTOM_JAVA_OPTS="-Djava.net.preferIPv6Addresses=true"

Cycle Wildfly