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Router NAT output interpretation

Hello,

I have some lags on my 3945 router. From show ip nat statistics there is following output:

BR1#show ip nat statistics

Total active translations: 20 (0 static, 20 dynamic; 20 extended)

Peak translations: 8877, occurred 1w0d ago

Outside interfaces:

  GigabitEthernet0/0, GigabitEthernet0/1

Inside interfaces:

  GigabitEthernet0/2

Hits: 593503525  Misses: 0

CEF Translated packets: 587439716, CEF Punted packets: 5467977

Expired translations: 8438266

Dynamic mappings:

-- Inside Source

[Id: 1] route-map NAT pool NAT.POOL refcount 9

pool SILKNET: netmask 255.255.255.248

        start 213.131.54.74 end 213.131.54.74

        type generic, total addresses 1, allocated 1 (100%), misses 24

Could you please tell me what does “misses 24” mean from last line ?

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Cisco Employee

Router NAT output interpretation

Misses: Number of times the software does a translations table lookup, fails to find an entry, and must try to create one.

http://www.cisco.com/en/US/docs/ios/12_3/ipaddr/command/reference/ip1_s1g.html#wp1082017

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