Re: BGP Reverse Path Selection

From: Saravanan Ponnaiah <saravanan.ponnaiah8_at_gmail.com>
Date: Mon, 26 Mar 2012 11:14:45 +0530

Thanks Expert,

Already I checked with my providers for community tag but they dont have.
Thanks Joe,Jesusnpals for your valuable inputs

With Regards

P.Saravanan

On Mon, Mar 26, 2012 at 10:58 AM, jesus And Pals <jesusnpals_at_gmail.com>wrote:

>
>
> On Mon, Mar 26, 2012 at 12:27 AM, jesus And Pals <jesusnpals_at_gmail.com>wrote:
>
>> Hi ,
>>
>> We have a similar setup in our company , we generally advertise equal
>> blocks on both providers .
>>
>> Every once in a while we come up with a situation where we would like to
>> influence traffic on the fly .
>> We have tried AS- Path prepend and run into complications ever so often,
>> maybe it was just how we were doing it i guess . ( on Juniper's )
>> But my point is we devised a simpler way to do it ..which guaranteed that
>> we could influence the path easily .
>> This will only work if you are advertising big blocks which i assume u
>> are .
>>
>> Let us suppose we advertised 2 blocks out Carrier A and Carrier B ( both
>> /19 )
>> So the carrier u want to be preferred for the reverse path , Just break
>> the /19 into two /20 routes .
>> So since u have a more specific route out there in the Internet with new
>> /20 its is the preferred inbound route for traffic .
>>
>> Hope this helps .
>> -ty
>>
>> On Mon, Mar 26, 2012 at 12:00 AM, Saravanan Ponnaiah <
>> saravanan.ponnaiah8_at_gmail.com> wrote:
>>
>>> Dear Expert,
>>>
>>> My network is having a two EBGP links with Different providers, I want to
>>> manipulate the Reverse traffic via one provider & forward via another
>>> provider. Is any other way to manipulate the EBGP reverse path traffic
>>> other than AS PATH Attribute
>>>
>>> With Regards
>>>
>>> P.Saravanan
>>>
>>>
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Received on Mon Mar 26 2012 - 11:14:45 ART

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