Error WebSocket Not Connected and Missing Radio Metrics in Aruba Central VNA Plugin

Products

• Network Observability
• Virtual Network Assurance
• CA Performance Management

Issue/Introduction

Radio metrics are missing in DX NetOps Performance Management dashboards from the Aruba Central VNA plugin ․ Other features and inventory polling work correctly, but performance data is absent

ERROR MESSAGE: "WebSocket not connected to Aruba Central wss://[hostname] for Monitoring data" "java․net․NoRouteToHostException: No route to host" or similar messages found in the <VNA_INSTALL>/wildfly/standalone/log/oc.log file

SYMPTOMS:

• Radio metrics and performance data do not populate in dashboards

• Inventory polling for access points and switches continues to function

• Logs indicate repeated failures to connect to the monitoring stream

   

CONTEXT: This happens when MONITORING_STREAMING_ENABLED is set to true in the plugin configuration, which relies on a WebSocket stream instead of REST API polling

IMPACT: Network administrators cannot monitor radio performance and client statistics

 

Environment

 

Product: DX NetOps Virtual Network Assurance (VNA)
Version: All supported releases
Plugin: Aruba Central

 

Cause

The proxy IP change or firewall restriction prevents the necessary HTTP CONNECT method from upgrading the connection to a secure WebSocket The system hard-drops the traffic attempting to bypass or upgrade through the proxy, resulting in a NoRouteToHostException

Resolution

Make sure the proxy configuration in the plugin settings are correct

Additional Information

Aruba Central streaming API requires Advanced AP Licenses; Foundation licenses will reject the stream connection