DCE/DTE question ?

Hi everybody ?
How to check from the command line if the serial interface having DCE side where you will set the clock rate from it ?
how to do this without looking at the media ?

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Comments

networker050184

Show controllers

Cessation

Dowima wrote:

Hi everybody ?
How to check from the command line if the serial interface having DCE side where you will set the clock rate from it ?
how to do this without looking at the media ?

I believe all you have to type is "clock rate" and if it is not correct you should receive an error

Someone feel free to correct me.

GL.

networker050184

show controllers int s0/0

this will show you what end of the cable is plugged into the serial

Dowima

Thanks alot

Slowhand

networker050184 wrote:

show controllers int s0/0

I thought the "show controllers" command required you put a space between the interface name and the number? (i.e. s 0/0 or serial 0/0 as opposed to s0/0 or serial0/0.)

networker050184

Both work the same.

gabrielbtoledo

Cessation wrote:

Dowima wrote:

Hi everybody ?
How to check from the command line if the serial interface having DCE side where you will set the clock rate from it ?
how to do this without looking at the media ?

I believe all you have to type is "clock rate" and if it is not correct you should receive an error

Someone feel free to correct me.

GL.

That is right too. If you try to put the clock rate in a DTE, it won't let you.

networker050184

You should always know how to find out yourself. Many things can cause errors on a router!

Webmaster

Another, less convenient method is to look at the CTS, RTS, etc. values at the bottom of the show interface output on a serial link. I.e. bring one side up (no shut) and the other side down and check the values. Bring the other up and the first one down and check again. Not really a CCNA-level way of doing it but it should be imo.