As usual, your knowledge astounds me!!
Thank you very much for the explanation.
>From: Priscilla Oppenheimer <[EMAIL PROTECTED]>
>Reply-To: Priscilla Oppenheimer <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: no ip address for frame-relay switch?
>Date: Fri, 14 Jul 2000 14:05:41 -0700
>
>At 04:15 PM 7/14/00, Niraj Palikhey wrote:
>>Hi,
>>I am trying to understand as to why an ip address is not assigned to the
>>serial interfaces of a router that is configured as a frame relay switch.
>>Is this only for a lab environment or is this how it is also done in the
>>real world?
>>Also each interface is assigned as a dce interface. Why does the router
>>need this to support switching?
>
>When I teach basic Cisco router configuration, I have the student in the
>middle who is configuring the Frame Relay switch remove ip addresses to
>bring home the fact that the switch is a data-link-layer device. All it has
>to know is that when a frame comes in on port x with DLCI x, it should go
>out port y with DLCI y.
>
>The router serial ports on either side of the switch should have IP
>addresses and be in the same subnet.
>
>On the other hand, it wouldn't really hurt to have IP addresses on the
>switch. With addresses, you could ping and use SNMP for troubleshooting. I
>think removing the addresses is just a good pedagogical technique so that
>you understand what's really going on. In the real world, I believe service
>providers give switch interfaces IP addresses to facilitate
>troubleshooting.
>
>Regarding DCE, one side of the link must use the command "frame-relay
>intf-type dce." It makes most sense to put that on the switch, but in
>actuality it doesn't matter which side has the command. It doesn't
>necessarily have to be the side that has the DCE end of the cable connected
>and the "clockrate" command configured, but once again for pedagogical
>reasons I always do it on that side. So my "frame-relay switch" ends us
>with the following config. (There are other ways to do it, but I like this
>one):
>
>frame-relay switching
>interface serial 0
>no ip address
>clockrate 56000
>encapsulation frame-relay
>frame-relay intf-type dce
>frame-relay route 100 interface Serial1 200
>interface serial 1
>no ip address
>clockrate 56000
>encapsulation frame-relay
>frame-relay intf-type dce
>frame-relay route 200 interface Serial0 100
>
>Priscilla
>
>>Can someone help?
>>Thank you.
>>Kind regards,
>>[EMAIL PROTECTED]
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>
>
>________________________
>
>Priscilla Oppenheimer
>http://www.priscilla.com
>
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