Monitor NAT Statistics

Network address translator (NAT) is software that runs on an INA module and maps one IP address or a group of IP addresses to another IP address or group of IP addresses. To check statistics for NAT sessions, click Monitor==>NAT Statistics.

Select a NAT session and use the Reset Counters button to restart incrementing values in PMVision only, not on the INA module. Use Restore Counters to restore these counters to their real-time values.

To view NAT Statistics simultaneously with other options in the PMVision tree, click New Window.

Device

IP address or name of the selected INA module.

Port Name 

INA module port assignment. 

Session Direction 

Inbound or outbound. Details

 

Good Translated Packets 

Number of packets whose addresses were translated correctly. 

 

Internal Failures 

Number of failed NAT sessions due to a failure in product resources, such as memory. 

Address/TU Port Shortages 

Number of failed NAT sessions due to a lack of available TCP or UDP ports or addresses in the address pool. 

Invalid Direction 

Number of packets dropped because of a Session Direction Failure. A Session Diretion Failure occurs when there is a map for one direction of NAT translation (ie. outmap), but not the attempted one (ie. inmap). 

ICMP Rejects Sent

Number of ICMP Rejects packets send in response to a Session Direction Failure. A Session Diretion Failure occurs when there is a map for one direction of NAT translation (ie. outmap), but not the attempted one (ie. inmap).

Session Timeouts 

Packet translation failed because of a session timeout. 

 

Session Types Not Allowed 

Packet translation failed because the session type was not an approved NAT session type. 

 

Miscellaneous Failures 

Any failure other than the ones listed above.