S0 and S1

Daniel333Daniel333 Member Posts: 2,077 ■■■■■■□□□□
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.
-Daniel

Comments

  • spike_tomahawkspike_tomahawk Member Posts: 43 ■■□□□□□□□□
    You can connect S0 to S0 and S1 to S1, no problem
  • Daniel333Daniel333 Member Posts: 2,077 ■■■■■■□□□□
    does it need to be crossed over?
    -Daniel
  • ArturasjArturasj Member Posts: 24 ■□□□□□□□□□
    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 BozPaul Boz Member Posts: 2,620 ■■■■■■■■□□
    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.
    CCNP | CCIP | CCDP | CCNA, CCDA
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  • lwwarnerlwwarner Member Posts: 147 ■■■□□□□□□□
    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
  • Danman32Danman32 Member Posts: 1,243
    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.
  • cambeicambei Member Posts: 62 ■■■□□□□□□□
    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.
  • PashPash Member Posts: 1,600 ■■■■■□□□□□
    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.
    DevOps Engineer and Security Champion. https://blog.pash.by - I am trying to find my writing style, so please bear with me.
  • NetwurkNetwurk Member Posts: 1,155 ■■■■■□□□□□
    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"
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