nanog mailing list archives

Re: IPv6 woes - RFC


From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Thu, 23 Sep 2021 09:41:54 +0200

tor. 23. sep. 2021 01.39 skrev Colton Conor <colton.conor () gmail com>:

Where does this "You can only have about 200-300 subscribers per IPv4
address on a CGN." limit come from? I have seen several apartment
complexes run on a single static IPv4 address using a Mikrotik with
NAT.


It is our observation as the limit before you regularly run out of ports
using Linux as a CGN server.

It will still work if you have more users on an IP. The users will just
experience session failures at peak. Low levels of that might show up as
pictures that fail to load on a web page and be ok when the user reloads.
This will increase the number of support calls and the number of customers
that asks to escape the CGN. Or people will live with it and just think
that the Internet connection is low quality.

Regards

Baldur

Current thread: