Application Performance Monitoring using NetFlow Analyzer

In most of the Corporate networks, the common problem seen over decades is that application performance worsens during business hours. Network Admin managing the corporate network faces the huge task of finding out what is causing the slowness in accessing the application hosted on a remote data center.

The application performance can degrade due to following reasons:

1. Application installed server is not good enough (Related Hardware).

2. Bandwidth availability is less when accessing from remote office

The first point can be troubleshooted using our ManageEngine tools like ManageEngine OpManager and ManageEngine Application Manager. We will concentrate on the 2^nd Point which is our focus area, since NetFlow Analyzer is a complete and comprehensive monitoring tool.

Following are the reasons why Application Performance degrades when it comes to Bandwidth part:

• Traffic is been heavily utilized by Non- Business critical application

• Less priority is given for this application.

Scenario based explanation is more suitable to explaining this. Consider that a corporate network has different sites, on one its Data center site a SAP server is hosted. Users and Admin from all the sites access this server very second and they report slowness while accessing.

A network Admin monitoring each site router through NetFlow export in NetFlow Analyzer is given a task to find out is there any problem with the network. Network Admin can do 2 things in NetFlow Analyzer to find out how much bandwidth is been utilized by this application on each interface of their routers:

• Application Mapping

• IP Groups

Application Mapping :-

Network Administrator creates an Application Mapping in NetFlow Analyzer with IP address , port and protocol used by SAP server to monitor traffic utilization each link. 

He drills down to each interface to verify the traffic utilized by SAP Server. He finds that Non Critical applications like HTTP are using majority of bandwidth. Also, he finds that traffic heading to SAP server are falling under default non prioritized queue.

Network Admin then can set some QoS policies to prioritize the SAP, so that this business critical application perofmance can be increased accross network.

IP Group :-

Network admin can also create IP groups with the IP address of SAP server to see how much bandwidh utilized on each site. To know more about his, pleas click here.

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Thanks and Regards

Praveen Kumar