Cisco cables are already expensive. Don't give them ideas.... like requiring
a separate cable for every configuration possible.<g>
Tim
----- Original Message -----
From: "Louie Belt" <[EMAIL PROTECTED]>
To: "'Tim Ross'" <[EMAIL PROTECTED]>; "'Jojo'" <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent: Wednesday, October 18, 2000 8:18 PM
Subject: RE: cross-over roll-over : Here is THE simplest rule
> Ok, but if a router is configured only for transparent bridging (layer 2)
a
> crossover cable is still needed to connect to another router or a
> workstation even though the router is acting as a layer 2 device only.
> <grin>.
>
> LAB
>
>
>
> Since time immemorial and pre-industrial, 'greed' has been the accusation
> hurled at the rich by the concrete-bound illiterates who were unable to
> conceive of the source of wealth or of the motivation of those who produce
> it.
> -- Ayn Rand
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> Tim Ross
> Sent: Wednesday, October 18, 2000 9:41 PM
> To: Jojo; [EMAIL PROTECTED]
> Subject: Re: cross-over roll-over : Here is THE simplest rule
>
>
> If you connect you workstation directly to a router both would are layer 3
> devices, and would require a crossover cable. If you connect two Cisco
> routers you need to use a crossover cable (DCE-DTE back-to-back) because
> both are layer 3 devices. When connecting a Workstation(layer 3) to a
> Switch(layer 2) you use a straight through cable. Each of these scenarios
> prove Bernard's basic rule. Your example about a PC and a modem also
proves
> his point. A workstation is a layer 3 device because it is using TCP/IP
(or
> IPX). The modem is a layer 2 device, using PPP as a Layer 2 protocol.
> Therefore you do not need a crossover cable between the two. After the
modem
> connects to ISP (with PPP), TCP/IP can travel over the link. You can also
> think of it as workstation is a DTE and modem is a DCE, because that is
true
> in that case.
>
> Tim
>
> ----- Original Message -----
> From: "Jojo" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, October 16, 2000 8:22 PM
> Subject: Re: cross-over roll-over : Here is THE simplest rule
>
>
> > How about when you connect a workstation to a modem will this rule
apply?
> I
> > think not.
> > This rule will only be applicable to LAN devices but for WAN devices the
> > rule as Sebastian pointed out should be applied.
> >
> >
> > >>The rule is:
> > >>connecting devices of the same OSI layer, use cross-over cable.
> > >>connecting devices of different layers, use straight through.
> > >>A workstation is considered layer3.
> > >>
> > >>Bernard
> >
> >
> > _________________________________
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