Re: BGP Allowas-in / Loop Prevention

Thanks Travis, this is much more cleaner way to accomplish the task than
considering any redistribution etc

Regards,
Nish

On Wed, Mar 9, 2011 at 3:01 PM, travis newshott <tnewshott_at_gmail.com> wrote:

> You can trick the neighbor by advertising a different AS, using the
> neighbor <IP> local-as <ASN> command. This will tell them you are in a
> different ASN without having to change your entire BGP config.
>
> Or, you can alternatively use AS Override, which is often used in MPLS on
> the PE device to replace the CE ASN with the PE ASN. This preserves the
> AS_PATH length but avoids getting caught by loop prevention.
>
> On Wed, Mar 9, 2011 at 6:08 AM, Nish Vamadevan <ipnish_at_gmail.com> wrote:
>
>> Hi,
>>
>> I have came across the allowas-in BGP command which will allow the AS
>> number
>> in when it is already in the AS-Path.
>>
>> What I am asking myself is... is there any other way of accomplishing the
>> task other than redistributing into another routing protocol and taking it
>> out?
>>
>> The reason I am asking is, Cisco has a tendency of asking questions on the
>> lab and then specify "do not use this command"
>>
>> Any help will be appreciated.
>>
>> Thanks,
>>
>> --
>> Regards,
>> Nish
>>
>> http://twitter.com/nish
>>
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-- 
Regards,
Nish
http://twitter.com/nish
Blogs and organic groups at http://www.ccie.net