[183272] in North American Network Operators' Group
Re: BGP advertise-best-external on RR
daemon@ATHENA.MIT.EDU (Jeff Tantsura)
Tue Aug 25 05:37:19 2015
X-Original-To: nanog@nanog.org
From: Jeff Tantsura <jeff.tantsura@ericsson.com>
To: Diptanshu Singh <diptanshu.singh@gmail.com>, Mohamed Kamal
<mkamal@noor.net>
Date: Tue, 25 Aug 2015 09:37:14 +0000
In-Reply-To: <C48DD837-5C34-4F9C-B249-70957526B944@gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Hi,
In your case I=B9d recommend to use diverse path, due to its simplicity and
non disruptive deployment characteristics.
As you know - diverse path requires additional BGP session per additional
(second, next, etc) path, in most cases not a problem, however mileage
might vary.
To my memory, in Cisco land - it has only been implemented in IOS, not XR,
please check. =20
Cheers,
Jeff
-----Original Message-----
From: Diptanshu Singh <diptanshu.singh@gmail.com>
Date: Monday, August 24, 2015 at 10:53 PM
To: Mohamed Kamal <mkamal@noor.net>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Subject: Re: BGP advertise-best-external on RR
>Yes . In the case of diverse path , shadow route reflector will be the
>one wherever you enable commands to trigger diverse path computation.
>
>Good thing with diverse path is that the RR-Clients don't have to have
>any support but bad thing is that it can only reflect One additional
>best-path( second best path ) .
>
>Sent from my iPhone
>
>> On Aug 24, 2015, at 2:31 PM, Mohamed Kamal <mkamal@noor.net> wrote:
>>=20
>> It's only supported on the 15.2(4)S and later not the SRE train. I
>>might consider an upgrade.
>>=20
>> One more question regarding this, can you configure the RR to be the
>>main and shadow RR?
>>=20
>> Mohamed Kamal
>> Core Network Sr. Engineer
>>=20
>>> On 8/24/2015 9:16 PM, Diptanshu Singh wrote:
>>> BGP Add-Path might be your friend . You can look at diverse-path as
>>>well .
>>=20
