From: Metin (metin.yildizli@gmail.com)
Date: Sun Oct 15 2006 - 05:48:48 ART
You have delete existing dynamic map entries via clear frame-relay inarp
command after disabling inverse-arp.
Cisco Key wrote:
> Hi Ladies and Gentleman
>
> Is there anyone that can advise me?
>
> Thanks in advance
>
> Paul
>
>
> On 11/10/06, Cisco Key <ciscokey@googlemail.com> wrote:
>
>> Hi all
>>
>> Wonder if you can help me with the following problem:
>>
>> Forgive me if this has been discussed before:
>>
>> Scenario
>>
>> Hub Router
>> / \
>> / \
>> Spoke Router-A Spoke Router-B
>>
>> I have analysed the following:
>>
>> If I disable inverse arp on Spoke Router B, I still get a dynamic mapping
>> from Spoke Router A on Spoke Router B but nothing for Spoke Router B that's
>> of course from a dynamic perspective!
>>
>> So am I correct in saying when you disable inverse arp on a router it
>> means that the router will not map dynamic arp but will still receive a
>> dynamic mapping from its neighbour router.
>>
>> Now am I correct in assuming if you want to disable inverse arp you will
>> have to do it on all routers
>>
>> Secondly if you have static maps configured or point to point interfaces
>> you don't need to disable inverse arp
>> or
>> But should you have frame-relay interface-dlci configured and multipoint
>> interface or the default NBMA then you would need to disable inverse arp
>>
>> Also if I may ask what does no arp frame-relay do as per my testing it had
>> no affect on any of the dynamic mappings
>>
>> I know what arp frame-relay does by definition given a network protocol
>> for example IP the arp frame-relay command determines the corresponding
>> hardware address which would be a dlci for frame-relay
>>
>> This is the same for normal arp but inverse arp is only used for example
>> in a bootp scenario whereby a device has a layer 2 address and asks for a
>> layer 3 address same as frame relay inverse arp whereby you are a dlci layer
>> 2 is looking for a ip address to be mapped to
>>
>> What scenario would no arp frame-relay do?
>>
>> Apologies for the jabber but I need clarity
>>
>> thanks for you assistance in advance
>>
>> Best Regards
>>
>
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