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Satellite Bandwidth

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5 replies

by pardarling

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Dear sir,
I have buy a 512/512KB service on telestar12.
and my vendor says that he can support up to 1MB send on my equipment(I have a 2 watt Hughes Trannceiver) ,
But now, with this bandwidth(512/512)
I have recieved this result with ftp test :

Recieve :

Remote file 1.rp
Local file d:\rec.rp
200 PORT command successful.
150 Opening BINARY mode data connection for /pardarling/1.rp (4289643 bytes).
226 Transfer complete.
ftp: 4289643 bytes received in 140.43Seconds 30.55Kbytes/sec.

------------------------------------------------------------------------------
Send :

Local file d:\rec.rp
Remote file sendkish.rp
200 PORT command successful.
150 Opening BINARY mode data connection for /pardarling/sendkish.rp .
226-You are using 57.2% of your subscribed disk space
226 You have 6.420 MB of space available
ftp: 4289643 bytes sent in 175.37Seconds 24.46Kbytes/sec.

that means I can send 85.7KB/s and
receive 244.4 KB/s

which one of us is wrong ?
Do I makea mistake in my calculation or I have forgotten something ?

what is the best practice to examine my link bandwidth ?

with this band width(512/512),
How much date I can transmitt ?

I would be very pleased if you help me .
Best Wishes

5 replies

by curacao_dejavu

Hi,

you can use the following to test your bandwith:
1. a software called Myvitalagent, search on download.com on "netmedic"and you will get it. It's a very good freeware and will tell you exactly whats's your bandwith and if there is a problem it will tell you if it's on your end, on the isp's end or simply if it's the internet.
2. you can use the following site too http://webservices.cnet.com/bandwidth/
wich will compare your stallite bandwith with other modems, cables, etc.

Your satellite vendor will give the maximum performance of his equipment but you have to check with the isp what speed he is giving you. There may be different prices for all speeds. Also check at different times, you may have a higher speed at night.

regards

Leopold

by stillatit

Things to consider:

1. You never get to use all of the bandwidth. Every packet you send has overhead, and there is wasted time between packets, waiting for reponses, and re-transmits when packets are NAK'ed.

2. When you look at internet numbers, you are looking at not only your bandwidth to your provider, but that provider's path to wherever you are going. Often the path is the limiting factor.

Example -- I had a T1 with a vendor who shall remain nameless. When I tried to send data to one particular site, I got a 230 byte/sec transfer rate (bytes -- not Kbytes). They had an OC-3 on the far side. The problem was that traffic between my provider and the target's provider went through a public peering point, and slowed to a crawl at that point.

3. www.dslreports.com and www.2wire.com both have bandwidth meters which you can use to test your speed, but the real measure of speed is the speed to where you are going. Use the traceroute (tracert) program to see where the delays are in the path you actually want to use.

Good luck.

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