Solved

Network utility for T-1 line bandwidth utilization statistics

Posted on 2008-10-17
4
659 Views
Last Modified: 2013-12-07
I need to determine bandwidth utilization on a point-to-point  T-1 line.

I don't have acess to the router configuration so I can't use NetFlow or SNMP-based network monitoring utilities.

I can tap the line with an old 10Base-T Ethernet hub (not a switch) to sniff the packets going between the network and one of the routers.

I'm looking for a GUI-based Windows network monitoring program that's free or low cost (<$100.00) that can sniff the packets and give me a bandwidth utilization graph for the T-1 line over time.

0
Comment
Question by:hrtmath
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 12

Accepted Solution

by:
hfraser earned 250 total points
ID: 22746723
A simple flexible solution is a Linux box running NTOP. The key advantage is that you can set it up in a convenient spot near the tap running headless, and view the results from anywhere with a web browser. NTOP will provide historical trending of traffic, protocols, and hosts.

The best way to configure this is with 2 nics, one watching the T1 connection, and the other for access to the web interface. That way, using the web interface doesn't affect the true stats you want to monitor. If you configure the T1-facing interface to be up without and IP address, it's truly in stealth mode and will not generate any traffic.
0
 
LVL 32

Expert Comment

by:Kamran Arshad
ID: 22746955
Hi,

You can use Wireshark, the Industry standard Protocol Analyzer. It can sniff the network traffic and decode almost all the famous protocols.

www.wireshark.org

Incase you are new to Wireshark, then

wiki.wireshark.org
0
 

Author Comment

by:hrtmath
ID: 22750604
I've used Wireshark and it does give a variety of traffic statistics, but I don't think that it will produce a graph of bandwidth utilization over time. Is this correct?
0
 
LVL 12

Expert Comment

by:hfraser
ID: 22750704
Wireshark's got a rich set of analysis tools, one of which is an IO graph showing traffic over time. All of the filtering capabilities built in to Wireshark can be applied to the graphs to give very detailed analysis of the traffic. I use it all the time.

Wireshark's designed to be a protocol analyzer, though, and isn't designed to monitor traffic over a longer period of time (although I have used the command-line version tshark to do longer term captures in the past). If you're looking for an "appliance": to leave in place and monitor traffic for, say, days, weeks or months, and produce reports showing bandwidth over these periods, ntop is a better tool.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Testing DSL speed/internal netwrk speed, etc. 3 117
does nexus 9k support nbar 5 116
Tool to discover installed software on Network 3 113
Decrypting SSL traffic in wireshark 7 221
Many network operators, engineers, and administrators do not take several factors into consideration when troubleshooting network throughput and latency issues.  They often  measure the throughput by performing a measurement  by transferring a large…
Large and small networks have one same need, Service monitoring. Service monitoring consists of watch services of the several servers in the network. To monitor means that the administrator will receive an alert when a service is down or it's state …
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question