LAN speed 10/100mb

[GregHess]

10/100 is mbit, not Mbit. Might also be mbps, I always forget. Damn cross standards.

Ya I know, confusing.

If the m is mbit, divide the # by 8, and thats the megs per seconds.

So 10/8 = 1.25 megs/sec

100/8 = 12.5 megs/sec

I'd replace your switch for a 100mbit hub...their only like 20 bucks.

Btw this also works for firewire and USB.

USB1=12 mbit = 1.5 megs/sec
USB2=480 mbit = 60 megs/sec
Firewire=400 mbit = 50 megs/sec
Firewire800= 800 mbit = 100 megs/sec

Note these are all Theoretical Maximums.

Actual speeds are usually never this fast. Speed is limited by many variables including...

1) Computer speed
2) Cable length
3) Smurfs in the vincinity

[singularity2006]

doesn't mbit mean megabit? And usually isn't M capitalized? So mbit = Mbit? I always thought m was just one value and the only thing that was picky in nature was the b and the B for bit and byte.

[Sieb]

you are correct

[GregHess]

Ya that could definitely be it. I tend to mix all that stuff up :).

So then, at least I was corrected.

Either way, my original bandwidth #'s are still correct :).

[singularity2006]

aaahhhh, ok! Hah, for a minute there I thought I was losing my mind.

[elvis]

Originally posted by GregHess
If the m is mbit, divide the # by 8, and thats the megs per seconds.

So 10/8 = 1.25 megs/sec


remebering also that 1.25 MB/s is the maximum theoretical throughput. You'd be lucky to get half that on a normal network due to packet collisions and whatnot. 1MB/s is quite good for a 10Mbit/s hub.


3) Smurfs in the vincinity

Now I know why those little buggers are blue! It's so they can hide inside CAT5 cable!!! :surprised

[Sieb]

Distance, interference, stranding, crosstalk, performance limits of the clients, all variables that degrade the network. Collissions are pretty much only an issue on 10baseT/token networks where its all one collission domain (or your using a hub). If you set the network up right (switched vlans (CSMA/CD), issolated broadcast domains (routers), etc..) and the planets are aligned just perfectly, you should be able to max the limit fairly easily.. :)

Smurfs are bad.. they like chewing on blue cables... Which is why I only use grey cat5e.. They don't like fiber though, the red light scares them..

Now Fraggles.. they cause all sorts of mayham...:rolleyes:

[milkyman]

not being funny but does anyone actually use the connection to its full potential?

i mean the hardware they are connected to? never seems so ie the differnce from USB 1 - firewire 800? never noticed it. and found speeds more dependent on the hardware i have.

what is this CAT5?



:cry: = missing something here.

[GregHess]

Milkman,

Try an external hd on usb1, and then try it on usb2.

You'll notice the difference in a second.

[milkyman]

bah! external hard drives are over priced.

[GregHess]

You can get a external hd converter for about 20-40 bucks.

So for an external 80 gig WD800JB drive, its around 100 bucks.

Another good example of USB1 vs USB2 (or firewire for that matter) is digital cameras, USB key cards, MP3 players, Digital Camcorders, external CDRW/DVDRW drives, external removable media...should I add more? :)

[Sieb]

You also have to take into consideration the protocol overhead. TCP/IP has a syn/ack for each packet plus the (de)construction of the headers. USB is to TCP as Firewire is to UDP. You will always get a higher throughput with firewire since it just dumps everything all at once or in a very consistance flood of data (which is why its good for video and usb isn't) and USB has a bit of error checking built in. And dont forget the OSI model.. :)

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