>>вроде был такой баг...
>
>Возможно и был, но я попробовал 3 разные версии IOS, правда все
>из одной ветки 12.4 ....
>результат не изменился :( Лучше пользоваться багтрекером.
Резюме:
CSCsi30964 Bug Details:
Static NAT statement disappears from running-configuration
Symptoms:
On a Cisco router performing NAT, static NAT statements may disappear from the
running-configuration during operation. Any new flows requiring translation via
the missing statement may fail.
Conditions:
- This problem was first experienced in IOS 12.4(9)T.
- It has only been reported for extendable, inside source static NAT statements
for TCP ports 80 (HTTP) and 25 (SMTP), with and without a route-map:
Examples:
ip nat inside source static tcp x.x.x.x 25 y.y.y.y 25 extendable
ip nat inside source static tcp x.x.x.x 25 y.y.y.y 25 extendable route-map nonat
ip nat inside source static tcp x.x.x.x 80 y.y.y.y 80 route-map nonat extendable
- After the statement disappears from the running-configuration, it is still
visible in the startup-configuration.
- Existing translations created before the disappearance are cached in the NAT
translation table and continue to work correctly.
Workaround:
Reload the router.
Status
Fixed
Severity
3 - moderate
Last Modified
In Last 2 weeks
Product
Cisco IOS software
Technology
1st Found-In
12.4(9)T
Known Affected Versions
Fixed-In
12.4(15)T5
12.4(19.12)T
12.4(19.18)M
12.4(18b)M
12.4(19a)M
Вариант для распечатки
Маршрутизаторы CISCO и др. оборудование. (Public)
(??) on 08-Июл-08, 13:44 
