I have noticed that with a 2811 router and the older WIC-1T, that a 'clock rate 2000000' command appears in the configuration. No matter what I try, the command remains. I must be missing something here. Any suggestions would be great.
The code referenced in the link is 11 code. The router is a 2800. The 'no' version of this command has not been supported for a long time now for this implimentation. In my experience even when the option was available it wouldnt function in these scenerios.
A little anicdotal history, the DTE used to be the default setting for serial interfaces. This was a long time ago though. I think back in 10.0 code.
The serial interface of a router will 'default' to a DCE interface until it detects a DTE cable type. Becuase the default is DCE, and a DCE interface MUST provide clock to the DTE side the clockrate shows up in config. This is also why you are unable to remove the clock command. The clock command will go away once a DTE cable has been detected (You can verify what the interface sees with the 'show controller serial interface [#]).
Not too worry though, if this is how you experience the issue, this is expected behavior. Holler if it is otherwise.
The DTE and DCE relationship with serial interfaces deals specificaly with 'Serial type' interfaces. The DTE and DCE clocking relationship relates to Layer 1 "serial communication". This comminication occurs between the Router 'Serial Type" interface and an external DCE type device, usualy a CSU/DSU or Modem or other device. The serial interface type of a WIC-1T and WIC-2T are DB-25 serial interfaces. The serial communcation occurs across usualy V.35 there are other cable types though.
I preface with this to explain the following. The WIC-1DSU-T1 interface is a T1 card that has an internal CSU/DSU. Since the CSU/DSU is internal there is no 'Physical Serial' Level of communication occuring here. This step of the topology is eliminated by this card. Therfore there is no DTE or DCE interface and therfore no 'serial' clock rate command.
There is clocking though on the WIC-1DSU-T1 but this is 'Physical Layer T1 clocking'. The speed of the interface is determined by the amound of SDO's configured in the service-module timeslots and the speed assigned to the DSO's. The clock internal or line are the T1 clocking settings available on this card.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.