Maximum number of NAT connections on CCR

Hardware MikroTik hardware general
1

Hi

I consider using CCR 1036 for centralized NAT at a (W)ISP. Does anybody have experience with the maximum number of connections the CCR can handle simultaneously and any ideas if this can be monitored with SNMP?

I can easily get approx 900 MBit through with NAT, so I’m more concerned with the number of connections.

Thanks :slight_smile:

2

The maximum concurrent number of active NAT connection, for any devices, are 32767 (ports range 32768…65535 [0x8000 to 0xFFFF]) for each public IP used.

3

any ideas if this can be monitored with SNMP

:open_mouth: Mmm… I think that’s is not possible via SNMP, but via The Dude + script for “ros_command”

4

Thanks. I guess it might be a question of memory and CPU used for keeping track of all connections. An ASA 5510 with base license is limited to 50k connections, but that seems to be a limitations based on license level.

Anyone with real-life experiance of CCR’s NAT capabilities and performance?