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Re: Verizon DSL moving to CGN
From: "Rajiv Asati (rajiva)" <rajiva () cisco com>
Date: Mon, 8 Apr 2013 18:19:59 +0000



CGN-like box. Yes, it's stateless. Doesn't matter, I still need to flow
traffic through a dedicated box because MAP won't be implemented in my
regular routers (if you know otherwise, please speak up).

Yes, MAP (T-Translation or E-Encap mode) is implemented on two regular
routers that I know of - ASR9K and ASR1K. Without that, you are right that
MAP wouldn't have been as beneficial as claimed.

It's still NAT.

Yes, assuming MAP-T.
No, assuming, MAP-E




Cheers,
Rajiv

-----Original Message-----
From: Mikael Abrahamsson <swmike () swm pp se>
Organization: People's Front Against WWW
Date: Monday, April 8, 2013 6:01 AM
To: Rajiv Asati <rajiva () cisco com>
Cc: nanog list <nanog () nanog org>
Subject: Re: Verizon DSL moving to CGN

On Mon, 8 Apr 2013, Rajiv Asati (rajiva) wrote:

Thankfully, MAP is not CGN. Correctly stated, unlike DS-Lite, MAP
doesn't require any CGN that causes the SP network to put up with the
NAT state. This means that all the subsequent issues of CGN/DS-Lite no
longer apply.

For me as an operator, MAP is most likely going to be implemented in a
CGN-like box. Yes, it's stateless. Doesn't matter, I still need to flow
traffic through a dedicated box because MAP won't be implemented in my
regular routers (if you know otherwise, please speak up).

MAP is all about stateless (NAT64 of Encapsulation) and IPv6 enabled
access. MAP makes much more sense in any SP network having its internet
customers do IPv4 address sharing and embrace IPv6.

It's still NAT.

-- 
Mikael Abrahamsson    email: swmike () swm pp se



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