General discussion

Locked

Cross over, straight thru, roll over

By kenneth_davis ·
I am a ccna and I can't get a staraight answer on when to use the above cables. I want to take 4 PCs connected to a hub. Connect the hub to a 2500 series router and on the so port connect a PC. I want to do this to set up a basic lab to play with two networks connected via a router. What type of cables do I need and how do you define the above cables?

This conversation is currently closed to new comments.

10 total posts (Page 1 of 1)  
| Thread display: Collapse - | Expand +

All Comments

Collapse -

Cross over, straight thru, roll over

by DoubleDown In reply to Cross over, straight thru ...

straight thru (same wire config on both ends)
crossover = rollover (two pairs of wires are interchanged on one end)

4pc's connect to hub with ST cables. hub connects to router with CO cable.

anytime you connect a hub/switch/router to anotherhub/switch/router, use a crossover cable.

anytime you connect a pc to a hub/switch/router use a straight thru cable.

you can also connect a pc directly to a pc with a crossover cable.

Collapse -

Cross over, straight thru, roll over

by kenneth_davis In reply to Cross over, straight thru ...

The question was auto-closed by TechRepublic

Collapse -

Cross over, straight thru, roll over

by a_p_bones In reply to Cross over, straight thru ...

Hello,
If you are using any networking equipment like and hub, switch or route you will need to use a straight through cable or better know as a patch lead. If you are running a bridge between two PC's then you use a Cross over or better know as adirect cable.
The reason for this is that the network devices make the cross over for you.
See below
This is with a patch lead
tx= transmit
rx= recieve

PC Bridge Newtork
tx rx tx rx ^ ^ ^ ^
^ ^ hub
^ ^ ^ ^
^ ^ ^ ^
tx rx tx rx
So the answer to your question is use the straight thru cable.
You can tell the difference by looking at the ends and if the colour are in the same order thats the one!
a_p_bones

Collapse -

Cross over, straight thru, roll over

by a_p_bones In reply to Cross over, straight thru ...

the format is not how i layed it out but your get the idea

Collapse -

Cross over, straight thru, roll over

by kenneth_davis In reply to Cross over, straight thru ...

The question was auto-closed by TechRepublic

Collapse -

Cross over, straight thru, roll over

by jim In reply to Cross over, straight thru ...

Both of the first responses are correct.

If your networking equipment has a crossover port then you can connect two pieces of equipment with a ST cable (But only go from 1 crossover port to a normal port). If your equipment does not have a builtin crossover port you must use the Crossover cable.

Collapse -

Cross over, straight thru, roll over

by kenneth_davis In reply to Cross over, straight thru ...

The question was auto-closed by TechRepublic

Collapse -

Cross over, straight thru, roll over

by false_angel22 In reply to Cross over, straight thru ...

Just to simplify things for you....

same devices you use a crossover...router to router...switch to switch...hub to hub...pc to pc...


Different devices you use a straightthrough... pc to router...pc to hub...hub to router...

easy rule to live by

Collapse -

Cross over, straight thru, roll over

by kenneth_davis In reply to Cross over, straight thru ...

The question was auto-closed by TechRepublic

Collapse -

Cross over, straight thru, roll over

by kenneth_davis In reply to Cross over, straight thru ...

This question was auto closed due to inactivity

Back to Hardware Forum
10 total posts (Page 1 of 1)  

Related Discussions

Related Forums