What will happen? if you connect more than one 100m Ethernet Ports together

[George Jendeski]

If I try to connect more than one 100m Ethernet Ports together.
What will happen?
Why?

 

[popatim]

Depends on the ports and how you connect them.
worst case: nothing.
Best cast: the ports are auto config and will switch to crossover mode or the cable is a crossover cable and this will connect the two pc's together if the networks drivers have been installed in them.

 

[bill001g]

Depends what devices you mean. If you were to connect a pc that has 2 ethernet ports to the router with multiple cable it will likely just give you a error on one of the ports. You need special switch options to combine 2 ports.

If you were to plug a cable between 2 ports on your router or switch a lot of consumer class routers will loop the network and in effect take down all the machines even on other switches. Since doing this can take down a whole company or section of a company commercial switches have a feature called spanning tree to detect and solve this some consumer equipment has this but it is still not a common feature.