From: Petr Lapukhov (petrsoft@gmail.com)
Date: Fri Apr 28 2006 - 08:24:03 GMT-3
Hello,
The later solution does NOT meet the requirements of the Task.
It WOULD meet them, though, if you put "frame-relay interface-dlci"
at subinterface (taking DLCIs off the physcial interace), but subinterfaces
are not permitted by the task.
You see, by default, ALL dynamically (LMI) learned DLCIs are "landed"
at physical interface.
So you CAN use "frame-relay interface dlci" at physical intf, but only if
you
need to apply map-class or PPPoFR, or something like that. Otherwise it's
useless.
In your case, InARP requests will be sent over ALL the interface DLCIs.
HTH
Petr
2006/4/28, CCIE 4 Me <ccie4me@inbox.lv>:
>
> The Brians & All,
>
> Hub&Spoke Frame Frame Relay:
> *Configure the Frame Relay network between R1,R3 & R5 using only physical
> interfaces.
> *All layer 3 to layer 2 mappings between these routers should be
> dynamically learned.
> *Do attempt to dynamically map layer 3 to layer 2 on DLC!.s other than
> those in the diagram.
>
> Proposed Solution on R1:
> interface serial0/0
> ip address 190.1.135.1 255.255.255.0
> encapsulation frame-relay
> no frame-relay inverse-arp ip 102
> no frame-relay inverse-arp ip 104
> no frame-relay inverse-arp ip 105
> no frame-relay inverse-arp ip 113
> !
> Where 103 is the DLCI on R1. I understand this solution and it works okay
> amd meet the restrictions on the Task. Would't this solution also meet the
> Task restriction?
> !
> R1:
> interface serial0/0
> ip address 190.1.135.1 255.255.255.0
> encapsulation frame-relay
> frame-relay interface-dlci 103
> !
> It result in fewer key strokes, and does not require one to lookup what
> other DLCIs are out there on the interface to be blocked from inverse-arp.
>
> Why I am seeking your opinion on this is because, I do not see you use the
> later solution very often, please comment.
>
> Thanks.
> ccie4me
>
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