Another handy dandy command to see whats connected is:
3660A#sh controller ser 3/3
M4T: show controller:
PAS unit 3, subunit 3, f/w version 1-45, rev ID 0x2800001, version 2
idb = 0x621ECF4C, ds = 0x621EEC04, ssb=0x621EEEDC
Clock mux=0x0, ucmd_ctrl=0x0, port_status=0xC
Serial config=0x8, line config=0x200
maxdgram=1608, bufpool=48Kb, 31 particles
DCD=down DSR=down DTR=down RTS=down CTS=down
line state: down
cable type : V.35 DCE cable, received clockrate 246
base0 registers=0x3D800000, base1 registers=0x3D802000
mxt_ds=0x62638504, rx ring entries=40, tx ring entries=128
rxring=0x56ABB80, rxr shadow=0x621F4C88, rx_head=0
txring=0x56ABD00, txr shadow=0x621F4E94, tx_head=0, tx_tail=0,
tx_count=0
throttled=0, enabled=0
rx_no_eop_err=0, rx_no_stp_err=0, rx_no_eop_stp_err=0
rx_no_buf=0, rx_soft_overrun_err=0, dump_err= 0, bogus=0, mxt_flags=0x20
tx_underrun_err=0, tx_soft_underrun_err=0, tx_limited=1(2)
tx_fullring=0, tx_started=0
I have a DCE on this interface.
Dave
Chuck Larrieu wrote:
>
> that started with the 12.x releases, I believe.
>
> in 11.x one could enter the clockrate on a DTE interface, but the command
> would not show up in the running config. Later, if one were to plug a DCE
> cable into that interface, the clock rate command magically appeared!
Cisco
> seems to be taking the real fun out of the IOS with the 12.x releases.. :-
> Chuck
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> MADMAN
> Sent: Thursday, October 25, 2001 7:23 AM
> To: [EMAIL PROTECTED]
> Subject: Re: DTE/DCE explanation please [7:24071]
>
> Cisco sells DCE and DTE cables and some of the routers are soooo smart
> they know if they are conneced to one or the other, i.e. you cant set
> the clock rate if you have a DTE cable conected:
>
> C3640B(config)#inter ser 1/0
> C3640B(config-if)#clock rate 154000
> %Error: This command applies only to DCE interfaces
>
> On the above example are two V.35 cable connected b-b and I attempted
> to set the clockrate on the DTE.
>
> Dave
>
> Sam Deckert wrote:
> >
> > Thanks Tim, that was great!
> >
> > So, a special db60-db60 cable can be used for back-to-back connections,
> and
> > will work as long as one router is set to be the DCE and provide a
> > clockrate. Does this cable have any special pinouts or anything? Is
> there
> > a diagram somewhere? Did a search on google, no luck tho!
> >
> > Also, would a setup with two V.35 cables (one male, one female) connected
> > together between two routers work in the same way?
> >
> > Thanks for your help!
> >
> > Sam.
> >
> > ----- Original Message -----
> > From: "Ouellette, Tim"
> > To:
> > Sent: Thursday, October 25, 2001 9:49 PM
> > Subject: RE: DTE/DCE explanation please [7:24071]
> >
> > > Sam,
> > >
> > > "the whole DTE/DCE" thing is related directly to where the clocking
> comes
> > > from. In a "typical" wan, the clocking to your router's serial port
> comes
> > > from an external CSU/DSU that your carrier may provide. Therefor, the
> > > carried is the DCE and your router is the DTE. In a home environment,
> if
> > > you have your routers connected via a db60->db60 cable, one of those
> > routers
> > > needs to supply the clock rate. Check your cable because one end is
> > > probably labelled as DCE and the other DTE. If it's not, trying using
> the
> > > "show controller serial x" and that should tell you the type that is
> > plugged
> > > into it. On the DCE side of that connected link, you need to use the
> > "clock
> > > rate" command to supply clocking to the other side.
> > >
> > > I don't think there is a "DTE cable" I believe it's more of you order
> the
> > > proper pin size (db60 on 2500's and db60 or db50 on the 4000's) for
each
> > > side.
> > >
> > > Hope that helps.
> > >
> > > Tim
> > >
> > > > -----Original Message-----
> > > > From: Sam Deckert [SMTP:[EMAIL PROTECTED]]
> > > > Sent: Wednesday, October 24, 2001 10:54 PM
> > > > To: [EMAIL PROTECTED]
> > > > Subject: DTE/DCE explanation please [7:24071]
> > > >
> > > > Hello,
> > > >
> > > > Could someone kindly explain the whole DTE / DCE thing in relation to
> > > > setting
> > > > up a home lab and using routers back to back?
> > > >
> > > > I believe that DTE is male and DCE female, but what are the other
> > > > differences?
> > > >
> > > > When connecting a router to a CSU/DSU, would you always order a DTE
> > cable?
> > > >
> > > > Thanks for any help anyone can provide!
> --
> David Madland
> Sr. Network Engineer
> CCIE# 2016
> Qwest Communications Int. Inc.
> [EMAIL PROTECTED]
> 612-664-3367
>
> "Emotion should reflect reason not guide it"
--
David Madland
Sr. Network Engineer
CCIE# 2016
Qwest Communications Int. Inc.
[EMAIL PROTECTED]
612-664-3367
"Emotion should reflect reason not guide it"
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=24118&t=24071
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