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Quick question on hubs / switches

R

renorocks

Member
Is there a difference between using the uplink port on a hub / switch compared to using just a standard port when connecting a 2nd hub / switch ?
 
Yes. The uplink port is like an extension port, everything is straight through. A regular port is a like crossed over so that your transmit talks to the other devices receive conductor, and your receive talks to the other devices transmit conductor.

Oddly, patch cables ARE crossed over. The Uplink port un-crosses them. Thus making it double-crossed 😀 which equals straight.
 
Does it make a difference in bandwidth? If you connect a 2nd hub to a standard 100mbs port on the first hub, then all the remaining ports on the 2nd hub have to divide that 100mbs bandwidth. If you use an uplink does that mean that all of your ports on the 2nd hub would get 100mbs?
 


<< Does it make a difference in bandwidth? If you connect a 2nd hub to a standard 100mbs port on the first hub, then all the remaining ports on the 2nd hub have to divide that 100mbs bandwidth. If you use an uplink does that mean that all of your ports on the 2nd hub would get 100mbs? >>



An uplink port and a standard port are identical except with regard to the wiring. All devices connected to the second hub will have to use the single 100BaseT uplink to the first hub, so if they're all trying to push 100Mbps at once through that link, network performance will slow down. Makes no difference if you use a standard cable on an uplink port, or a crossover cable on a standard port.

-j
 
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