On Mon, 21 May 2018, Luigi Rosa wrote:
Hi,
one of my customer is a US corporate with offices literally on 5 continents
and one datacentre. Offices are connected each other and to the datacentrevia
MPLS, each office accesses the Internet via local ISP.
Since they asked me to start planning for IPv6, my idea was originally to buy
a netblock from ARIN (maybe a /40) and use it for the offices (each office
has many different IPv4 networks).
My concern is: if I buy a netblock from ARIN and use it in every office, how
can I handle the access to local ISP?
I thing I should NAT the netblock of each office to handle the routing, or is
there some other way to do so?
https://tools.ietf.org/html/draft-ietf-rtgwg-enterprise-pa-multihoming-06
might be relevant to your requirements.
If you feel you must perform NAT, make sure you do 1:1 NAT and not 1:N NAT
(ie, create a solution where each internal IPv6 address gets a unique
external address so you avoid all the port translations).
--
Mikael Abrahamsson email: [email protected]
