Thanks Brian!

"Brian" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> On Sat, 28 Oct 2000, Austin wrote:
>
> > I have a 2523 in my lab configured as a Frame Relay Switch.
> > All the serial ports are acting as DCE providing clocking to the
routers.
> > Initially, all clock rates were set to 64000 but I changed it to 1000000
...
> > for some reason, only serial0 and serial1 accepted the new clockrate
speed f
> > 1000000 ... when i tried to enter the clock rate command on the others
it
> > says ... %Error: Unsupported clock rate for this interface .....
> > When I do a show interfaces ....
> > the output for serial0 and serial 1 ... the second line of the output
says
> > Hardware is HD64570 .............
> > for all the other serial interfaces ..... the second line of the output
says
> > Hardware
> > is CD2430 in sync mode .....
> > The keywords being "in sync mode" ... I am guessing that this might be a
> > reason I cannot set the clock rate on the other serial interfaces at
1000000
> > ....
> >
> > Any ideas from anyone as to what is happening and why it is like that?
>
> on 252x routers, you have 2 "high speed" serial interfaces, and 2 "low
> speed" serial interfaces.  High speed usually means that it can goto 4Mbps
> I believe.  Cisco usually denotes a modular high speed interface with "T",
> as in like a NP-2T, or a NM-4T.  Low speed usually means that it can goto
> 64kps.  Low speed interfaces are denoted with an "S", like CSC-4S on a
> AGS+ is 4 low speed ports.
>
> Don't fret though, in a home lab this is fine usually.  Even 4 low speed
> interfaces would allow you to do everything.
>
> Brian
>
>
>
> >
> > Thanks,
> >
> >
> >
> > _________________________________
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> >
>
> -----------------------------------------------
> Brian Feeny, CCNP, CCDP       [EMAIL PROTECTED]
> Network Administrator
> ShreveNet Inc. (ASN 11881)
>
> _________________________________
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>


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