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Displaying Translation Statistics

The show ip nat statistics command displays internal statistics that apply to NAT operation.

show ip nat statistics

Use to display internal NAT statistics.
Field descriptions
- Last dynamic allocation failure—Completion level of any dynamic allocation failures; the number of times the router attempted dynamic allocation but reached the dynamic allocation entry limit
- Current static translation entries
  - Inside Source Simple—Number of inside source simple static translations
  - Outside Source Simple—Number of outside source simple static translations
  - Inside Source Extended—Number of inside source extended static translations
  - Outside Source Extended—Number of outside source extended static translations
- Dynamic Translation Type—Type of dynamic translation (inside source simple, outside source simple, inside source extended )
- Current—Current number of dynamic translations of the associated translation type
- Peak—Peak number of dynamic translations of the associated translation type
- Accumulated—Accumulated number of dynamic translations of the associated type; this value reflects the accumulation of dynamic translations since the last router reboot operation
- Failed—Total number of installation attempts that failed for an associated translation type
- Forwarding statistics for packets received on inside or outside interfaces
  - forwarded directly—Number of packets forwarded directly (that is, without the need of translation)
  - forwarded through translator—Number of packets forwarded through the NAT translator
  - discarded—Number of packets discarded immediately upon receipt
  - discarded by translator—Number of packets discarded by the NAT translator when no matching translation could be located

Example

host1#show ip nat statistics
NAT database statistics for virtual router vr1:
--------------------------------------------------------------
Last dynamic allocation failure: normal, successful completion
Dynamic entry limit was reached 10318 times
 
Current static translation entries:
-----------------------------------------
Inside Source Simple:               10
Outside Source Simple:              3
Inside Source Extended:             8
Outside Source Extended:            12
 
       Dynamic
   Translation Type      Current       Peak     Accumulated    Failed
----------------------  ----------  ----------  -----------  ----------
Inside Source Simple         69999       69999        69999       12568
Outside Source Simple         4518        4518         4518          25
Inside Source Extended       70000       70000        70000         568
Fully Extended               26855       26855        26855        2565
 
 
Forwarding statistics for virtual router vr1:
------------------------------------------------------------------------
Packets received on inside interface and
    forwarded directly             8
    forwarded through translator   111763104
    discarded                      2
    discarded by translator        28524565
 
Bytes received on inside interface and
    forwarded directly             544
    forwarded through translator   5141098074
 
Packets received on outside interface and
    forwarded directly             7
    forwarded through translator   1031624
    discarded                      3
    discarded by translator        578961
 
Bytes received on outside interface and
    forwarded directly             476
    forwarded through translator   47454704

See show ip nat statistics.

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