5-4-3 rule of ethernet

[unitech]

Is this rule still valid in 100-TX (802.3u)

Can I extend the 100M limited distance of FE through using switch?

e.g ----cable(100M)----Switch----100M----Switch.....

[lgijssel]

The rule still stands...

You can extend the network in this way as while the collision domains are limited; however you will soon run into the next limit: seven spanning-tree hops per network.

The only viable solution for large distances is to use a Layer3 based solution, using routing instead of switching.

Regards,

Leo