Re: [plug] OT - Ethernet standards question

[Charles Christopher G Dolera]

>    -------------     -------------
>    10Mb Hub            10Mb Hub
>    -------------     -------------
>        |               |      |
>       PCs ...         PCs...  |
>                               |
>                          -------------
>                            10 Mb Hub
>                          -------------
>                            |    
>                           PCs...

If you're planning to add more hubs than switches to your network,
you might reconsider if you're sensitive with your data traffic, 
Hubs (repeaters) work differently to other types of network equipment such as 
switches). They simply repeat (pass on to all ports) all information that they 
receive. This is comparable to a chain of people passing on a message, from person to 
person, over a long distance.

There is a limit to the amount of hubs you can connect together because a large number 
of directly connected hubs makes the network vulnerable to collisions.

for 10 baseT The maximum number of repeater hops is four.
You can use Category 3 or 5 twisted-pair 10BASE-T cables. The maximum length of each 
cable is 100m (328ft).

for 100baseTX The maximum number of repeater hops is two (for a Class II hub).

HTH,
--charles


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