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What's difference 3.2 and 4.0 Code of Controller?

I'd like to upgrade the 4402 controller.

but there is two kind firmware exist 3.2 and 4.0 code.

Could anyone explain what's the difference between two codes.

  • Getting Started with Wireless

Re: What's difference 3.2 and 4.0 Code of Controller?

Cisco's 4.0 software and hardware releases add a number of capabilities to facilitate creation of guest credentials, including automatic generation of guest user IDs and passwords, and also create a handy role that Cisco calls the "Lobby Ambassador." This role would enable, say, a receptionist to create time-limited guest accounts.

Enter HREAP (Hybrid REAP) mode, which will be supported on Aironet 1130 and 1240 APs with Cisco's newest software release.HREAP supports visibility into VLAN tagging, providing enterprises with the flexibility to determine which SSIDs will have data bridged locally and which will have data tunneled back to a controller. HREAP is a definite improvement over REAP and will be attractive to enterprises looking to provide small-scale wireless services for a multitude of branch offices.

Support for the 1100 aironet.

Internal dhcp now works with foreign subnets.