nanog mailing list archives

Re: MAP-E


From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Fri, 2 Aug 2019 18:21:26 +0200

The goal is to minimize cost. Assuming 4 bits for the MAP routing (16 users
sharing one IPv4), leaving 12 bits for customer ports (4096 ports) and a
current price of USD 20 per IPv4 address, this gives a cost of USD 1.25 per
user for a fully redundant solution. For us it is even cheaper as we can
recirculate existing address space.

Regards,

Baldur


On Fri, Aug 2, 2019 at 5:32 PM JORDI PALET MARTINEZ <
jordi.palet () consulintel es> wrote:

I understand that, but the inconvenient is the fix allocation of ports per
client, and not all the clients use the same number of ports. Every option
has good and bad things.



MAP is less efficient in terms of maximizing the “use” of the existing
IPv4 addresses.



https://datatracker.ietf.org/doc/draft-lmhp-v6ops-transition-comparison/





Regards,

Jordi

@jordipalet







El 2/8/19 17:25, "NANOG en nombre de Baldur Norddahl" <
nanog-bounces () nanog org en nombre de baldur.norddahl () gmail com> escribió:



Hi Jordi



My alternative to MAP-E is plain old NAT 444 dual stack. I am trying to
avoid the expense and operative nightmare of having to run a redundant NAT
server setup with thousands of users. MAP is the only alternative that
avoids a provider run NAT server.



Regards,



Baldur





On Fri, Aug 2, 2019 at 3:38 PM JORDI PALET MARTINEZ via NANOG <
nanog () nanog org> wrote:

Ask the vendor to support RFC8585.



Also, you can do it with OpenWRT.



I think 464XLAT is a better option and both of them are supported by
OpenWRT.



You can also use OpenSource (Jool) for the NAT64.



Regards,

Jordi

@jordipalet







El 2/8/19 14:20, "NANOG en nombre de Baldur Norddahl" <
nanog-bounces () nanog org en nombre de baldur.norddahl () gmail com> escribió:



Hello



Are there any known public deployments of MAP-E? What about CPE routers
with support?



The pricing on IPv4 is now at USD 20/address so I am thinking we are
forced to go the CGN route going forward. Of all the options, MAP-E appears
to be the most elegant. Just add/remove some more headers on a packet and
route it as normal. No need to invest in anything as our core routers can
already do that. No worries about scale.



BUT - our current CPE has zero support. We are too small that they will
make this feature just for us, so I need to convince them there is going to
be a demand. Alternatively I need to find a different CPE vendor that has
MAP-E support, but are there any?



What is holding MAP-E back?  In my view MAP-E could be the end game for
IPv4. Customers get full IPv6 and enough of IPv4 to be somewhat compatible.
The ISP networks are not forced to do a lot of processing such as CGN
otherwise requires.



I read some posts from Japan where users are reporting a deployment of
MAP-E. Anyone know about that?



Regards,



Baldur




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**********************************************
IPv4 is over
Are you ready for the new Internet ?
http://www.theipv6company.com
The IPv6 Company

This electronic message contains information which may be privileged or
confidential. The information is intended to be for the exclusive use of
the individual(s) named above and further non-explicilty authorized
disclosure, copying, distribution or use of the contents of this
information, even if partially, including attached files, is strictly
prohibited and will be considered a criminal offense. If you are not the
intended recipient be aware that any disclosure, copying, distribution or
use of the contents of this information, even if partially, including
attached files, is strictly prohibited, will be considered a criminal
offense, so you must reply to the original sender to inform about this
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