Re: Frame Relay

From: Mohamed Nizam (torontocisco@yahoo.ca)
Date: Fri Feb 21 2003 - 10:17:18 GMT-3


There are two kind of Frame relay set-up.

1. Frame relay thorough a FR-Switch. R5------ s0- FR-S -s1----- R6.
           This is what we most of the time practice. The middle router is
configured as FR- Switch. Usually we connect Cable's DCE side to FR-Sw. But
it is not mandatory. If so the config of the switch will be

frame switching

int s0
    encap frame
    clock rate 56000
    frame intf-type dce
    frame route 506 int s 1 605

int s1
    encap frame
    clock rate 56000
    frame intf-type dce
    frame route 605 int s 0 506

2. Terminating Frame Relay . R5 -S1--------------------S0/0-R6

    No switch is between them. Then one side of the link should be frame
intf-type dce. ( Cable DCE end , and thsi not necessary to be match. ) .
Also both sides DLCI numbers can be same or different.

 R5
     interface Serial1
      ip address 200.100.2.1 255.255.255.0
      encapsulation frame-relay
      frame-relay map ip 200.100.2.2 102 broadcast

  R6
     interface Serial0/0
      ip address 200.100.2.2 255.255.255.0
      encapsulation frame-relay
      clockrate 64000
        frame intf-type dce
      frame-relay map ip 200.100.2.1 201 broadcast

Thanks,

Mohamed Nizam

" A proud student of Harith"

----- Original Message -----
From: "Vijay S Jayaraman" <vjayaram@in.ibm.com>
To: "Larry Letterman" <lletterm@cisco.com>
Cc: "Bobby" <bobby1@ctimail3.com>; <ccielab@groupstudy.com>;
<nobody@groupstudy.com>
Sent: Friday, February 21, 2003 4:50 AM
Subject: Re: Frame Relay

> A frame relay back to back should work....if you enable "frame relay
> switching" on the dce side, add the "clock-rate" command on the dce
> interface, add "frame relay intf-type dce" to the dce end and have the
> DLCIs at both the connecting interfaces....
>
> But I doubt whether you would ever have the oppurtunity to do this in an
> actual lab because all the routers connect only through the frame relay
> switch and you are not allowed to touch that.....
>
>
> Regards,
> Vijay.
>
>
>
>
>
> "Larry Letterman"
> <lletterm@cisco.c To: "Bobby"
<bobby1@ctimail3.com>, <ccielab@groupstudy.com>
> om> cc:
> Sent by: Subject: Re: Frame Relay
> nobody@groupstudy
> .com
>
>
> 02/21/2003 01:02
> PM
> Please respond to
> "Larry Letterman"
>
>
>
>
>
> I'd be surprised if your config works..which one is the DTE
> and which is the DCE..
> I have a frame switch setup in my lab which works..and the
> frame switch uses frame relay
> routing and DCE/Clock rate commands..
>
> Also the Lab as I understand it is already configured for
> things like that..we should only have to configure the
> routers that connect to each other..altho people have said
> here and elsewhere that it might be in my interest
> to know how to set up a frame switch...
>
> Larry Letterman
> Network Engineer
> Cisco Systems
>
>
> ----- Original Message -----
> From: "Bobby" <bobby1@ctimail3.com>
> To: <ccielab@groupstudy.com>
> Sent: Thursday, February 20, 2003 6:01 PM
> Subject: Frame Relay
>
>
> > Hi Friends,
> >
> > If in the lab we were asked to configure a back to back fr
> connection
> > whether the following config is ok :
> >
> > R5
> > interface Serial1
> > ip address 200.100.2.1 255.255.255.0
> > encapsulation frame-relay
> > no keepalive
> > frame-relay map ip 200.100.2.2 102 broadcast
> >
> >
> > R6
> > interface Serial0/0
> > ip address 200.100.2.2 255.255.255.0
> > encapsulation frame-relay
> > no keepalive
> > clockrate 64000
> > frame-relay map ip 200.100.2.1 102 broadcast
> >
> > I was told that they will not accept the above config. Is
> there
> > any other way do it.
> >
> > Thanks



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