with 10,000 users the NAT table is becoming very large and with PAT the router is always checking all the NAT sessions to quickly find out if any TCP port can be released and this causes the high cpu usage.
This is the practical limit for PAT on routers.
Trying to use ASA can be a better solution if ASA NAT implementation is better or it has higher performance in this aspect.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...