Bad info about back to back 2500s. I'm using them in my home lab:
2501 dce:
interface Serial0
no shutdown
ip address 172.16.0.1 255.255.255.252
clockrate 4000000
2502 dte:
interface Serial0
no shutdown
ip address 172.16.0.2 255.255.255.252
With that and the dte/dce back to back cable, it just came up.
2501#sh contr serial
HD unit 0, idb = 0x93830, driver structure at 0x97BC8
buffer size 1524 HD unit 0, V.35 DCE cable, clockrate 4000000
*snip*
2502#sh contr serial
HD unit 0, idb = 0xB9694, driver structure at 0xBE418
buffer size 1524 HD unit 0, V.35 DTE cable
*snip*
Doesn't reflect what's plugged in regarding DTE vs. DCE. The 2501 end is
DCE, the 2502 is DTE. However, if you notice the difference between the
lines: 2501 DCE device has clockrate specified. Also, no matter what
clockrate I specify on the DTE side, it will not take the command (no error,
just never sets it, as clockrate is set by the DCE).
HTH
--
Jason Roysdon, CCNP/CCDP, MCSE, CNA, Network+, A+
List email: [EMAIL PROTECTED]
Homepage: http://jason.artoo.net/
Cisco resources: http://r2cisco.artoo.net/
"Flem" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Charles ,
>
> Inline ..
>
> --- Charles Paver <[EMAIL PROTECTED]> wrote:
> > Hi! I am having some difficulty in setting up my
> > lab
> > at home, and need some good advice. I have two
> > pc's,
> > 2 routers, and one switch. I just want to work on
> > the
> > routers for now, though. Just established a network
> > with them, and can telnet into the router. I have a
> > 2514 router with 2 serial and 2 ethernet ports, and
> > also a 2504 with 1 token ring and 2 serial. I also
> > have one cross over cable (dce to dte), one rollover
> > cable as well. My questions are:
> >
> > 1. on the 2514, I can't enable ospf. You know how
> > you type in router ospf (as#)? well, when i do
> > that,
> > i do not get a router-config> prompt. But with
> > eigrp or rip I do. I wanted to practice ospf, but
> > cant without getting into that mode!
>
> What do you get when you type in router ospf ### ?
> Message of some sort :-)
>
> >
> > 2. how do i connect the two routers? I know i use
> > the serial calbe, but which router gets the dte or
> > dce? i reda that all routers are dte, and therefore
> > need to have the clock rate set if not using the
> > dce!
> > So, on this router 2514 when i teyped in show int
> > s0,
> > it says down, down. Now, I went into interface
> > mode,
> > and did a no shutdown. And then I assigned it an ip
> > address. But, i cant do anything til i get that
> > interface up.
> >
>
> Router is by default nothing :-)
> Router will detect what cable is plugged in .
> You can see that with sh controllers ...
> Put dce cable in one and dte in the other .
> Set clock on the dce router , configure a similar
> protocol , ppp or hdlc and things should come up/up.
>
> > 3. once they are connected (if i cant use ospf, ill
> > settle for eigrp :>), then what? This ccnp stuff is
> > really hard without the materials (such as frame
> > lines
> > coming into the house, or csu/dsu's!!)
> >
>
> Don't now about ccnp .
> Then ... coffee I suppose .
>
> > 4. I just bought an external modem, so I can dial
> > in
> > to the router. Anyone know how to set this up to
> > simulate a t1 coming in? Such as, from my 56k phone
> > line to the external modem to the serial port? Or
> > is
> > my logic flawed?
> >
>
> No way to simulate T1 with a dialup connection . Think
> you can put a t1 back-to-back but not with c2500 . I
> saw a guy do it once with two c4500 .
>
>
> flem
> > Any advice is very, very appreciated! You guys are
> > awesome!
> >
> > __________________________________________________
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> > _________________________________
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