Throughput testing for Internet Leased Line

Internet Leased Line throughput testing is little tough task. Even after the media becomes clean but still the upload/download test to/from Internet doesn't comes up to the mark. Because of this a service provider gets problem while delivering the services.

Here is tested way to test the throughput of link on Internet.

1. Testing with TCP Traffic:

If we test with TCP traffic, like ftp upload/download. Since TCP traffic is always a 2 way traffic. Now if any side of traffic gets choked, the traffic of other side will go down because it will not get the acknowledgement. So the TCP is not a effective way to test the Internet Bandwidth throughput.

2. Testing with UDP Traffic:

If we test with UDP traffic, we will definitely get the full bandwidth throughput because UDP is one way traffic and it has not acknowledgement. So even if the bandwidth of any side gets choked, it will not affect the other sides bandwidth. But there is one problem here. If we test a point to point link, we can generate the UDP traffic online but if we are testing on Internet link, we can't generate the download traffic from Internet. Point 3 is going to solve this issue.

3. Testing with UDP and TCP Traffic both:

We can use some UDP traffic generator tools to generate the upload UDP traffic and can put the big file downloads from Internet websites like Microsoft.com, Apple.com and many games website etc. This will be TCP traffic. This way we can achieve our goal of showing the full throughput simultaneously upload and download to customer.

Remarks ::

• This method can be used for testing the throughput internet link upto 100 Mbps. Above 100 Mbps, it is not reliable.

• WAN Killer provided by Solarwind is a free and best toll for UDP traffic generation.