From: Nick Griffin (ngriffin@sio.midco.net)
Date: Fri Apr 28 2006 - 10:07:06 GMT-3
The other issues this causes with labs is your routers also try to form
pim adj over these dlci's, which I lost points for on a mock lab.
Petr Lapukhov wrote:
> 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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