From: Przemyslaw Karwasiecki (karwas@xxxxxxxxxxx)
Date: Sat Mar 02 2002 - 11:50:42 GMT-3
If "they" will configure FR switch interface with:
"frame intf-type dte" -- it will no longer be a FR switch.
(on this interface, at least).
Przemek
On Sat, 2002-03-02 at 08:54, Yigit Zorlu wrote:
> Hi all,
>
> I was digging the archieves and read mails about this topic. Now I have a
> question
>
> Which less frequently used command(s) may be required on the exam in FR
> interfaces ? By remembering that FR switch config. can not be modified...
> For example, in any case do we need to configure clockrate in the FR
> encapsulated serial interfaces of lab routers ? I dont think so since it is
> a layer 1 requirement, it has to be configured on the interface where DCE
> end of the serial cable is attached which is FR switch. So they can not ask
> that.
>
> But what if they configure the serial interfaces in the FR switch
> frame intf-type dte ???
>
> Dont we need to configure frame intf-type dce in our fr interfaces of
> routers ??
>
> Or can they ask a question like this ? I think it is technically possible..
>
> Any comments ?
>
> yigit
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> MERRILL, JAMES D (AIT)
> Sent: Wednesday, February 13, 2002 6:03 PM
> To: Don Banyong; kym blair; johnspencer@planet.nl; Hansang Bae;
> ccielab@groupstudy.com
> Subject: RE: Frame-Relay Intf-type DCE
>
>
> The Frame-relay intf-type DTE is the default.
> The only time I've used this command was when I connected my frame switch to
> a real frame cloud. The example on the doc CD has it as a hybrid solution
> were you connect to a frame switch but split PVCs off to other routers that
> are connected by pt-to-pt connections.
>
> James D. Merrill
>
>
>
> -----Original Message-----
> From: Don Banyong [mailto:don_study@hotmail.com]
> Sent: Tuesday, February 12, 2002 4:13 PM
> To: kym blair; johnspencer@planet.nl; Hansang Bae;
> ccielab@groupstudy.com
> Subject: Re: Frame-Relay Intf-type DCE
>
>
> Hello y'all.
> I have am still not sure if we have learnt anything new here.
> Pasted below, is the config of my three routers r1, r3 and r4 connected to a
> 2610 with three serial interfaces (two of which are syncronous smart
> serials). Pay attention to the physical (layer 1) DCE and DTE and also of
> the FR DCE intf.
>
> r1:
> hostname r1
> interface Serial0
> no ip address
> encapsulation frame-relay
> no keepalive
> clockrate 64000
> !
> interface Serial0.1 point-to-point
> ip address 172.16.0.1 255.255.255.252
> frame-relay interface-dlci 102
> !
> interface Serial1
> no ip address
> encapsulation frame-relay
> !
> interface Serial1.1 point-to-point
> ip address 172.16.96.1 255.255.255.252
> frame-relay interface-dlci 104
> !
> interface Serial1.2 point-to-point
> ip address 172.16.64.1 255.255.255.252
> frame-relay interface-dlci 103
> end
>
> r3:
> !
> interface Serial0.1 point-to-point
> ip address 172.16.64.2 255.255.255.252
> no cdp enable
> frame-relay interface-dlci 301
> !
> interface Serial0.2 point-to-point
> ip address 172.16.80.2 255.255.255.252
> no cdp enable
> frame-relay interface-dlci 304
> !
> interface Serial1
> no ip address
> shutdown
> no cdp enable
> end
>
> r4:
>
> interface Serial0
> no ip address
> encapsulation frame-relay
> no ip route-cache
> no ip mroute-cache
> clockrate 64000
> !
> interface Serial0.1 point-to-point
> ip address 172.16.96.2 255.255.255.252
> no ip route-cache
> frame-relay interface-dlci 401
> !
> interface Serial0.2 point-to-point
> ip address 172.16.80.1 255.255.255.252
> frame-relay interface-dlci 403
> no ip route-cache
> end
>
> fr-ts(frame-relay switch):
> interface Serial0/0
> no ip address
> no ip directed-broadcast
> encapsulation frame-relay
> clockrate 64000
> frame-relay intf-type dce
> frame-relay route 103 interface Serial0/2 301
> frame-relay route 104 interface Serial0/1 401
> !
> interface Serial0/1
> no ip address
> no ip directed-broadcast
> encapsulation frame-relay
> frame-relay intf-type dce
> frame-relay route 401 interface Serial0/0 104
> frame-relay route 403 interface Serial0/2 304
> !
> interface Serial0/2
> no ip address
> no ip directed-broadcast
> encapsulation frame-relay
> clockrate 64000
> frame-relay intf-type dce
> frame-relay route 301 interface Serial0/0 103
> frame-relay route 304 interface Serial0/1 403
> end
>
> When cmd 'sh frame route' is issued on my frame-relay switch, the output is
> Input Intf Input Dlci Output Intf Output Dlci Status
> Serial0/0 103 Serial0/2 301 active
> Serial0/0 104 Serial0/1 401 active
> Serial0/1 401 Serial0/0 104 active
> Serial0/1 403 Serial0/2 304 active
> Serial0/2 301 Serial0/0 103 active
> Serial0/2 304 Serial0/1 403 active
>
> I should mention also that there is full connectivity between all three
> routers (r1, r3 and r5 configured for full-mesh) verified by ping.
> As noticed, the fr-ts router(frame relay switch) has command 'frame-relay
> intf-type dce' on all three serial intfs even though its interface Serial0/1
> is a DTE. Cisco also has a similar example on their website.
> Again the question is when do you use the command 'frame-relay intf-type
> DTE' command?
>
> Thanks.
> Don
>
>
>
>
>
> ----- Original Message -----
> From: "kym blair" <kymblair@hotmail.com>
> To: <johnspencer@planet.nl>; <hbae@nyc.rr.com>; <ccielab@groupstudy.com>
> Sent: Sunday, February 10, 2002 6:31 AM
> Subject: Re: Frame-Relay Intf-type DCE
>
>
> > Hansang,
> >
> > I sometimes use "frame intf-type dte" on my Frame Relay switch.
> >
> > Most of the time I use a 2520 for my frame switch, and I put the DCE end
> on
> > the frame switch. But when I use my 2600 with WIC-2T modules for my frame
> > switch, my smart-serial-to-DB60 cables have the DTE on the smart-serial
> end,
> > which I must attach to the 2620. Because of these cables, I have to make
> my
> > frame switch the DTE. The command is available and I use it with no
> > problem.
> >
> > HTH, Kym
> >
> >
> > >From: "John Spencer" <johnspencer@planet.nl>
> > >Reply-To: "John Spencer" <johnspencer@planet.nl>
> > >To: "Hansang Bae" <hbae@nyc.rr.com>, <ccielab@groupstudy.com>
> > >Subject: Re: Frame-Relay Intf-type DCE
> > >Date: Sun, 10 Feb 2002 11:42:48 +0100
> > >
> > >Here is a situation when you can use both frame intf-type dte and dce on
> > >the
> > >"frame relay switch"
> > >
> > >Lets say you have a 3640 or whatever. You create the frame relay routes
> > >(switching paths ) from one interface to another eg serial 0/1 dlci 100
> to
> > >ser 1/0 dlci 110. Now what usually happens is you run from the interface
> > >which is usually dce physical and intf-type dce to another router. But
> > >instead you take a back to back cable and loop it between ser1/0 to say
> ser
> > >2/0 on the same router. Serial 2/0 now becomes the endpoint with ip
> > >addresses and the termination point of the circuit. Here is where you
> would
> > >use frame-relay intf-type dte. Although it apparently should not make a
> > >difference, in practice i would match physical and intf-type dce and dtes
> > >together as I have found it can make a difference.
> > >
> > >Regards
> > >John Spencer
> > >
> > >----- Original Message -----
> > >From: "Hansang Bae" <hbae@nyc.rr.com>
> > >To: <ccielab@groupstudy.com>
> > >Sent: Saturday, February 09, 2002 6:46 AM
> > >Subject: Re: Frame-Relay Intf-type DCE
> > >
> > >
> > > > At 11:51 PM 2/8/2002 -0500, Don Banyong wrote:
> > > > >You still did not answer my question. I completely understand the
> layer
> > >1
> > > > >concept of DCE and DTE.
> > > > >My question is -- in which scenario can someone use the Frame-relay
> > > > >Intf-type DTE command ?
> > > >
> > > >
> > > > When you hook up your router to a frame relay switch. This is the
> > >default
> > > > state. Type it in and you will not see it.
> > > >
> > > > hsb
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