Hi Yannis,
It all depends on your requirements and the type of customers you are
serving. A 1:64 ratio could work very well if you mainly serve
residential users. This ratio will provide each user with nearly 1,000
UDP and 1,000 TCP ports, which is sufficient for about 99% of users
(since the UDP/TCP ratio is currently around 50/50, thanks to QUIC).
The key factor is how you manage heavy users. Do they get blocked, or
are they allocated extra ports?
Additionally, some countries may have specific legal requirements
regarding acceptable ratios.
Rinse
On 30-10-2024 12:23, Yannis Nikolopoulos via ipv6-wg wrote:
Hello,
I was (off-line) watching Richard Patterson's presentation about Sky
UK's MAP-T deployment. By the way, this is the kind of presentations
we should be seeing more of in RIPE meetings.
So anyway, I was taken aback by the IPv4 sharing ratio and I had to do
a double take. Richard mentioned that they're using 1:16 in Italy and
1:8 in the UK. In a similar size deployment in Greece (in my previous
employer), a few years ago, we had decided on 1:64 (~1000 ports per
subscriber) and I'm now wondering if it is outdated or not.
Cheers,
Yannis
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