From: Thor Kopp (thorkopp@googlemail.com)
Date: Mon May 19 2008 - 14:53:02 ART
if you disable frame-relay inverse-arp for a multipoint subinterface, then
it will only affect the dlci's that you have configured on the that
multipoint sub-interface, all other dlci will be against the physical
interface unless you have mapped them to a sub-interface with the
frame-relay interface-dlci or frame-relay map command. The dlcis on the
physical interface could potentially use dynamic mappings. if you need to
use static mappings for all of the pvcs or not allow other pvcs to use
dynamic mappings, then disable it on the physical interface as well as the
sub-interface. At least that's my understanding.
- Thor
On Mon, May 19, 2008 at 6:42 PM, Manuel Mindez Cano <
Manuel.Mendez@telindus.es> wrote:
> Thor, thank you for your answer.
>
>
>
> Maybe, I had to specify more.
>
>
>
> In the case:
>
>
>
> Point-to-multipoint subinterface.
>
> Inverse-arp has to be disabled for entire scenario.
>
>
>
> Is it only needed in the subinterface?
>
>
>
> Thanks again.
>
>
>
>
> ------------------------------
>
> *De:* Thor Kopp [mailto:thorkopp@googlemail.com]
> *Enviado el:* lunes, 19 de mayo de 2008 19:29
> *Para:* Manuel Mindez Cano
> *CC:* ccielab@groupstudy.com
> *Asunto:* Re: no frame-relay inverse-arp
>
>
>
> disable frame-relay inverse-arp when you don't want the router to
> dynamically ask another router for it's L2/L3 mapping ie if you want to use
> static mappings that you need to define. if you have R1, R2 & R3 in a full
> mesh but you don't want to use the vc between R2-R3, then by default you
> will inverse-arp for the address of R3 from R2. in this situation, disable
> frame-relay inverse-arp, clear frame-relay inarp & then apply you manual
> frame-relay map statements to manually direct the traffic & which
> frame-relay pvc you should use. BTW you can't disable a router replying to
> frame-relay inverse-arp messages, you can only disable a router asking for
> them.
>
>
>
> you can't disable frame-relay inverse-arp on a point-to-point link but for
> a good reason, you only have 1 PVC that you will send the traffic to ie the
> host at the other end.
>
> - Thor
>
>
>
> On Mon, May 19, 2008 at 6:14 PM, Manuel Mindez Cano <
> Manuel.Mendez@telindus.es> wrote:
>
> Hi again group,
>
> Maybe this is a stupid question, but here I go:
>
> When we are required to disable frame-relay inverse-arp, and we are working
> with sub-interfaces, where we have to configure "no frame-relay
> inverse-arp"?
>
> Below the main interface?
>
> Interface serial 0/0
> no ip address
> encapsulation frame-relay
> no frame-relay inverse-arp
>
> Below the sub-interface?
>
> Interface serial 0/0
> no ip address
> encapsulation frame-relay
>
> Interface serial 0/0.1 point-to...
> Ip address x.x.x.x x.x.x.x
> no frame-relay inverse-arp
>
>
> Both?
>
>
> Many thanks for your answers. Can anybody to link me to a Cisco Doc about
> this?
>
>
>
> Manuel.
>
>
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