[c-nsp] NATPort block alloc fail

Steve Mikulasik Steve.Mikulasik at civeo.com
Wed Jun 10 16:34:09 EDT 2015

I am trying to confirm what "Port block alloc fail" means when displaying "sh ip nat stat." Is it the failure of the router to NAT connections due to exhausting the port range of available IPs? My google-fu is failing me today and I can't find any references to this.

sh ip nat stat
Total active translations: 43980 (0 static, 43980 dynamic; 43980 extended)
Outside interfaces:
Inside interfaces:
Hits: 126626681380 Misses: 930651476
Expired translations: 978336005
Dynamic mappings:
-- Inside Source
[Id: 1] access-list 10 interface GigabitEthernet0/0/0 refcount 43926
nat-limit statistics:
max entry: max allowed 500000, used 43979, missed 0
In-to-out drops: 498115 Out-to-in drops: 584950318
Pool stats drop: 0 Mapping stats drop: 0
Port block alloc fail: 41366
IP alias add fail: 0
Limit entry add fail: 0

Steve Mikulasik

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