Re: [v6ops] About Req for Comments - "Transition to IPv6"

[JORDI PALET MARTINEZ <[e-mail]>]

That’s why the *only* objective way to define it is to clearly state what part of the network you’re referring to.

 

Regards,

Jordi

@jordipalet

 

 

 

El 16/3/20 22:58, "v6ops en nombre de Alexandre Petrescu" <[e-mail] en nombre de [e-mail]> escribió:

 

 

Le 16/03/2020 à 22:20, Owen DeLong a écrit :

 



On Mar 16, 2020, at 13:40 , Alexandre Petrescu <[e-mail]> wrote:

 

 

Le 16/03/2020 à 20:42, Owen DeLong a écrit :

 



On Mar 16, 2020, at 04:03 , Alexandre Petrescu <[e-mail]> wrote:

 

 

Le 16/03/2020 à 08:05, Owen DeLong a écrit :

 



On Mar 15, 2020, at 16:32 , Matthew Petach <[e-mail]> wrote:

 

 

 

On Fri, Mar 6, 2020 at 11:54 AM Owen DeLong <[e-mail]> wrote:

> On Mar 5, 2020, at 8:51 AM, Alexandre Petrescu <[e-mail]> wrote:
> Is facebook a network?  I thought of it like a server farm.

How does one run a distributed server farm throughout the world without connecting it with a network? Am I missing something?

 

I believe for a very long time, that would have accurately described Akamai.

 

Akamai didn’t run a backbone. I’d argue that they did run many rather sizable networks.



Until their announcement, long after they had established themselves in the marketplace, that they were going to deploy a network: https://pc.nanog.org/static/published/meetings/NANOG71/1532/20171003_Kaufmann_Lightning_Talk_Akamai_v1.pdf

 

Oh, I’m very familiar with that particular project… It was in it’s startup hey day during my tenure in Mr. Kaufmann’s group. That was Akamai building a backbone to connect many (not nearly all) of their networks together.

 

I stand by my original statement. One cannot (usefully) run a server farm without a network. Network != backbone.

 

I agree a server farm needs a network.  But that network might be a switched Ethernet with VLANs in a large building, or it might be made of long haul links (ATM, FDDI, multi-Gigabit Ethernet fiber).

In the first case (call it VLAN) it is highly possible that VLAN in a building, or a set of close by buildings, are IPv6 only, and no IPv4.

 

This is just silly… For the server farm to be useful, that “VLAN” still needs a larger network in front of it that eventually makes contact (ideally in multiple diverse ways) with a larger internet.

 

But if the facebook system is a geographically distributed server farm with a large network, it might be that at some point the data is carried on IPv4 even though it is IPv6 over IPv4.

In talking to Facebook’s engineers, they claim to do v4<->6 translation at the edge where necessary to talk to IPv4-only clients and are IPv6-only throughout their datacenters and other networks.

 

that v4<->v6 means facebook network is not IPv6-only

 

No, it doesn’t. A few translation gateways at the very edge of the network are precisely what allows the network itself to be IPv6-only.

 

Here' s where we differ in the definition of 'IPv6-only'.  I disagree with the above statement.  An IPv6-only network has no translatio gateways.  But it's just a definition, no problem :-)

Alex

 

Owen

 

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