Cisco Cisco IOS Software Release 12.4(3)
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Scalability for Stateful NAT
The Scalability for Stateful NAT feature allows Stateful Network Address Translation (SNAT) to control
the Hot Standby Router Protocol (HSRP) state change until the NAT information is completely
exchanged. The ability to change the default TCP mode to User Datagram Protocol (UDP) mode, and
the ability to disable asymmetric queuing have been added. When UDP mode is used, SNAT will send
messages over UDP mode using a proprietary acknowledgement/retransmit mechanism.
the Hot Standby Router Protocol (HSRP) state change until the NAT information is completely
exchanged. The ability to change the default TCP mode to User Datagram Protocol (UDP) mode, and
the ability to disable asymmetric queuing have been added. When UDP mode is used, SNAT will send
messages over UDP mode using a proprietary acknowledgement/retransmit mechanism.
History for the Scalability for Stateful NAT Feature
Finding Support Information for Platforms and Cisco IOS Software Images
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Contents
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Release
Modification
12.4(3)
This feature was introduced.
12.4(4)T
This feature was integrated into Cisco IOS Release 12.4(4)T.