RE: no frame-relay inverse-arp

From: Manuel Méndez Cano (Manuel.Mendez@telindus.es)
Date: Mon May 19 2008 - 14:42:41 ART


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<mailto: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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