S0 and S1

Daniel333

i was just on paper designing the network that I am gonna set up at my house for testing purposes, but a coworker walked by and said the s0 serial ports cannot communicate with eachother . Is that so?

S0 must connect to S1?
and S1 to S0?

I tried googling it, real quick, but no clear answer.

spike_tomahawk

You can connect S0 to S0 and S1 to S1, no problem

Daniel333

does it need to be crossed over?

Arturasj

deshana wrote:

does it need to be crossed over?

I assume you are referring to the UTP crossover cable.
Serial cables are used for serial interfaces not UTP.

Paul Boz

I don't know what he's talking about. You just have to connect them, it doesn't matter which interface they connect to so long as the connectors match.

lwwarner

deshana wrote:

does it need to be crossed over?

Yes, you will need a serial crossover, or "back-to-back" cable such as:

http://www.anthonypanda.com/product.php?prd_id=1&opt_id=2

Danman32

Yes, S0 and S1 can be DCE or DTE, depending on what the cable tells it to be. However a serial port set as DCE by the cable must connect to a serial port set as DTE. So you need a DTE to DCE cable.

cambei

Danman32 wrote:

Yes, S0 and S1 can be DCE or DTE, depending on what the cable tells it to be. However a serial port set as DCE by the cable must connect to a serial port set as DTE. So you need a DTE to DCE cable.

Further to this, I have seen it suggested by people (mikej included... I think) that it is a good idea to pick either S0 or S1 to always be your DCE ports in your home lab. This is not a strict rule, but it does make it easier to remember which port is DCE or DTE.

Pash

cambei wrote:

Danman32 wrote:

Yes, S0 and S1 can be DCE or DTE, depending on what the cable tells it to be. However a serial port set as DCE by the cable must connect to a serial port set as DTE. So you need a DTE to DCE cable.

Further to this, I have seen it suggested by people (mikej included... I think) that it is a good idea to pick either S0 or S1 to always be your DCE ports in your home lab. This is not a strict rule, but it does make it easier to remember which port is DCE or DTE.

Yeh I always make my serial 1's the DCE's, so when im hammering out the commands i remember to put the clock rate in. On the same subject does for the purpose of the exam any clock rate *bandwidth* qualify because i have had people at my training college tell me that "clock rate 64000" should always be used on the dce end unless specified otherwise.

Netwurk

Some quick tips - use show controllers serial 0 (sh con s 0) - second line will show you if it's DCE or DTE

Easy way to remember if you need the clock rate command - the DCE end needs the command, so think "clock starts with C, like the C in DCE"