It seems "add-path" feature comes with hidden cli :) 

edit protocols bgp group add]
core1@swamy# show 
family inet {
    unicast {
        add-path {
            send {
                path-count 6;
            }
        }
    }
}

After enabling add-path, path-id is also advertised for the total # of 
next-hops for the same prefix.

Hope this helps....

Thanks and regards,
Swamy


Message: 1
Date: Tue, 30 Aug 2011 18:36:35 +0800
From: Mark Tinka <[email protected]>
To: [email protected]
Subject: Re: [j-nsp] load balancing in Route reflector scenario
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"

On Thursday, August 11, 2011 04:02:13 AM Zaid Hammoudi 
wrote:

> Keegan,
> 
> Look into add-path, something that is not supported in
> JUNOS yet, but will be sometime this year.
> 
> http://tools.ietf.org/html/draft-walton-bgp-add-paths-06
> 
> 
> http://www.nanog.org/meetings/nanog48/presentations/Tuesd
> ay/Ward_AddPath_N48.pdf
> 
> 
> http://www.juniper.net/us/en/local/pdf/whitepapers/200034
> 5-en.pdf

Earlier on this year, we really needed this feature but only 
realized that it was still under IETF development, and 
hadn't even been considered for reasonable development by 
the vendors.

We ended up working within the natural constraints of MPLS 
and IP to get what we wanted, but think the BGP Add Paths 
feature would certainly come in very handy due to some of 
the information hiding route reflectors introduce.

Cheers,

Mark.
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