Solved

Transfer speed

Posted on 2014-09-29
6
166 Views
Last Modified: 2014-10-24
I have a 20MB circuit at site A and a 6MB circuit at site B.  I am just wondering why if I start the transfer from a host at Site B, the transfer speed is much faster.  If I start a transfer from Site A (which has 20MB), it is just 4 times as slow.  Could this be related to some fragmentation from the higher speed site to the lower speed site?

thanks,
0
Comment
Question by:LateNaite
[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
6 Comments
 
LVL 13

Assisted Solution

by:akb
akb earned 125 total points
ID: 40351068
Maybe the upload and download speed at site B is 6MB and at Site A Download is 20MB but upload is 1.5MB.
0
 
LVL 46

Assisted Solution

by:Craig Beck
Craig Beck earned 250 total points
ID: 40351206
One circuit has a faster upload than the other.

Take this example... The 20Mbps download speed is faster than the 8Mbps upload speed of a DSL circuit.  When you're 'sending' to site B with a 6Mbps 'download' speed, you can achieve 6Mbps, because the sender can achieve 6Mbps.

However, when you're 'sending' from site B to site A, your upload from site B is only 1Mbps, so you can only send or receive the data within that transfer at 1Mbps.
0
 
LVL 26

Accepted Solution

by:
Fred Marshall earned 125 total points
ID: 40351313
I think the answers you've received are good ones.

It's important to know that the *slowest* link segment determines the best speed possible.
The water analogy is pipe diameter limiting flow under maximum pressure / full pipes.  Small pipes, more friction and less flow.  Big pipes might allow higher flow but where is it going to come from or go if there's a small  pipe in series with the large pipe?

The full picture needs to be
             Site A         Site B
Up              ?               ?
Down      20               8

The best transfer speed from Site A to Site B will be the smaller of Site A UP | Site B DOWN
The best transfer speed from Site B to Site A will be the smaller of Site B UP | Site A DOWN.

So, as others have pointed out, it looks like the Site A UP is less than the Site B UP so Site A UP < 8.
0
Independent Software Vendors: 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!

 

Author Comment

by:LateNaite
ID: 40355022
Thanks for all the responses. These circuits are MPLS circuits so the upload/download speed should be the same?
0
 
LVL 46

Assisted Solution

by:Craig Beck
Craig Beck earned 250 total points
ID: 40355096
MPLS can be DSL, so upload/download will be the same as DSL-type speeds.
0
 

Author Comment

by:LateNaite
ID: 40355231
Ok, thanks!  I am checking on this.
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Understanding FTPS File transfer is a common requirement in most Enterprises. While there are numerous ways to get a file from Point A to Point B over a network, perhaps the most common method still in use is FTP – File Transfer Protocol. FTP is …
This is the first one of a series of articles I’ll be writing to address technical issues that are always referred to as network problems. The network boundaries have changed, therefore having an understanding of how each piece in the network  puzzl…
Viewers will learn how to properly install and use Secure Shell (SSH) to work on projects or homework remotely. Download Secure Shell: Follow basic installation instructions: Open Secure Shell and use "Quick Connect" to enter credentials includi…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

724 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