Submit a ticketCall us

Announcing NCM 7.7
With NCM 7.7, you can examine the rules that make up an access control list for a Cisco ASA device. Then you can apply filters to display only rules that meet the specified criteria, order the rules by line number or by the hit count, and much more.
See new features and improvements.

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: 14 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. 

 

Last modified
20:54, 22 Jun 2016

Tags

Classifications

Public