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Home > Success Center > Netflow Traffic Analyzer (NTA) > NTA Application and Service Ports 16384-16403 collision event

NTA Application and Service Ports 16384-16403 collision event

Created by Michael Almadova, last modified by MindTouch on Jun 23, 2016

Views: 23 Votes: 0 Revisions: 3

Overview

In default port-app assignment, there is a group of ports ranging from 16384 to 16403 which belong to two applications at the same time - RTP (udp only) and iChat and AOL IM (tcp and udp). The issue occurs when there is UDP traffic of a port/s within the said range.

Environment

NTA v3.10 and later versions

Cause 

When ports in this range are assigned to two applications at the same moment, a port collision event is created. In the application resource, the data is shown as the application with the higher appID (iChat and AOL IM).

Resolution

Remove duplicate ports assignment. 

 

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