Collisions on Hub

[Guest_imported]

Alright, I've got a rather odd problem. When I connect my computer directly into my switch/router, my network connection is just fine. However, if I plug it into my 5 port 10/100mbit hub, I get collisions out the wazoo. Normally, I would hook both of my computers into the hub which is connected into the Uplink port of the switch/router as I have in the past, but for some reason or another -- it's not working this time.

Can anyone shed any light on my situation?

 

[goluman]

Hi Jherax,
Try using a cross cable (a UTP cable with the Rx/TX crossed over)it will solve your problem

 

[Guest_imported]

If your cable gets you a link light at both ends, look at the duplex setting on your
nic. Your switch/router can handle full duplex, but a hub, by definition cannot
support full duplex. Half at one end and full on the other will get you constant
collisions.

Dennis

 

[Guest_imported]

i'm getting constant collisions on my network... and i'm a newb, what are collisions and what do they do? any performance degration?

 

[jimbopalmer]

Ethernet always has some collisions, ethernet does collision avoidance, but never no collisions. if two packets collide both need retransmitted, so yes collisions slow throughput.

In this case however, the half duplex side thinks we can only send OR receive packets, while the full duplex end thinks it is allowed to send AND receive. So there will collisions like mad, as they are using different rules. I tried to remain child-like, all I acheived was childish.