Help me understand bandwidth

Soogs

Soogs

Soogs

Soldato
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Ill try to keep this short. What should the maximum bandwidth be between switches/routers be if all boxes are 100mb?

I changed some things around today and noticed a speed increase so i cbecked it out and it seems im getting a lot more than 12.8mbs per second

Setup is

100mbs router
Port1 100mbs switch --> 2x PC
Port2 100mbx switch with qos --> imac & nas drive
Port3 100mbs router in gateway mode --> xbox 360, laptop, mac mini pogo plug/other
Port4 xbox 360

I was getting 8-10mbs average to both the laptop and the mac mini from the nas drive

Is this correct?

Whats the maximum i should be able to get at any one time?

Hope that makes sense
 
Maximum would be 100/8 = 12.5MB/s which is 12800Kb/s

Limited of course by the receiving / sending machines disk speeds / cpu usage yadda yadda.

Personally gigabit is so cheap now, you should be investing in Gigabit switches.

Can always have a 100Mbits router, port 1 to gigabit switch, 4 machines on switch for internal gigabit data transfers. But you would have course have 4 machines utilising a single port linked to your router. Don't really see that being a huge issue unless your upload/download speeds are mad.

An example data transfer on my setup:

Main Machine to HP Microserver via FTP I will achieve 80-100MB/s for backing up.

Disclaimer: I'm not a networking professional, so someone like most likely laugh at my logic with some sort of corporate topology they use in their home :D.
 
Last edited:
rexehuk said:
Maximum would be 100/8 = 12.5MB/s which is 12800Mb/s

Limited of course by the receiving / sending machines disk speeds / cpu usage yadda yadda.

Personally gigabit is so cheap now, you should be investing in Gigabit switches.

Can always have a 100Mbits router, port 1 to gigabit switch, 4 machines on switch for internal gigabit data transfers. But you would have course have 4 machines utilising a single port linked to your router. Don't really see that being a huge issue unless your upload/download speeds are mad.

An example data transfer on my setup:

Main Machine to HP Microserver via FTP I will achieve 80-100MB/s for backing up.

Disclaimer: I'm not a networking professional, so someone like most likely laugh at my logic with some sort of corporate topology they use in their home :D.
Click to expand...

I think you made a typo. That would be "12800Kb/s"
 
Ok this clears it up.

One of the os's must be reporting incorrectly then but im still a bit baffled

Transferring (backing up a few thousand files of all sizes) mac mini to nas 8-10 megabytes per second

Same as above on laptop 7-9 megabytes per second

Xbox 360 on same switch as above 2 streaming 1080p

All at the same time

Weirdest part is it all feels a lot smoother then before
 
Each port on a switch has its own dedicated bandwidth so just because all your devices are doing things at once doesn't mean they should be impacting the performance of any of your other devices. Also you are most probably running 100mb/s full duplex which in essence means that you can send AND receive at 100mb/s so really you have 200mb/s bandwidth 100 when you are sending and 100 when receiving all this can happen at the same time.
 
I can understand how fullduplex helps here but it still shouldnt be posible with the bottle neck of the 100mbs per switch

Ive tried streaming the same 1080 videos mac to xbox and it plays/streams at 1.2 mega bytes per second and bursts at about 8 megabytes per second for buffering seeking etc

This almost combined witht the other 2 transfering at the said rates puts this 2.5/3 times the capacity of the cables/switches ?

I dont know why im fussing but it feels like the matrix is broken
 
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