Re: Advancing the Protocol and Morin Drafts

Dino Farinacci <dino@cisco.com> Mon, 13 October 2008 17:49 UTC

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From: Dino Farinacci <dino@cisco.com>
To: Ron Bonica <rbonica@juniper.net>
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Subject: Re: Advancing the Protocol and Morin Drafts
Date: Mon, 13 Oct 2008 10:49:13 -0700
References: <A834346E-E29F-4CD5-94AF-D6B99D1E2D42@multicasttech.com> <2F1DE4DFCFF32144B771BD2C246E6A20E721CD@misout7msgusr7e.ugd.att.com> <200810101608.m9AG86M66693@magenta.juniper.net> <EE8ECF15-01CD-4E7A-AE6F-D878688FCDE7@cisco.com> <48F386AE.1090201@juniper.net>
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Cc: Ross Callon <rcallon@juniper.net>, Yakov Rekhter <yakov@juniper.net>, l3vpn@ietf.org
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Yes, all of the above.

Dino

On Oct 13, 2008, at 10:34 AM, Ron Bonica wrote:

> Dino,
>
> When you say "this service", do you refer to the L3VPN unicast  
> service,
> the L3VPN multicast service, or an L3VPN service that includes both
> unicast and multicast? Or all of the above?
>
>                              Ron
>
>
> Dino Farinacci wrote:
>> Define success Yakov?
>>
>> It is not at all clear, and has never been proved to me this  
>> service is
>> *profitable*. It may be generating revenue but the cost of running  
>> the
>> service must be considered as well.
>>
>> Dino
>>
>> On Oct 10, 2008, at 9:08 AM, Yakov Rekhter wrote:
>>
>>> Prasanna,
>>>
>>>> I vote NO.
>>>>
>>>> Being in AT&T Advanced Tier support group and having supported  
>>>> the MVPN
>>>> core for the last 2 years, I can clearly say that we need a  
>>>> solution
>>>> such as PIM-BiDir that can reduce the number of multicast states  
>>>> in the
>>>> PEs to be able to scale the Groups X Sources x OILs explosion for  
>>>> our
>>>> very large Enterprise customers.   We definitely do not want to  
>>>> tweak a
>>>> crucial protocol like BGP of which our scale is 2 Million VPNV4  
>>>> routes
>>>> in the US alone.
>>>
>>> On the subject of "we definitely do not want to tweak", I'd like
>>> to remind you that during the early days of 2547 VPNs some of its
>>> opponents were saying that they are against 2547 VPNs because they
>>> do not want to "tweak" such a crucial protocol as BGP to carry VPNv4
>>> routes.
>>>
>>> Today AT&T has "2 million VPNv4 routes in the US alone" all carried
>>> in BGP, and a successful 2547 VPN service. None of this would be
>>> possible if we would not tweak BGP.
>>>
>>> Yakov.
>>
>>