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Encryption Vlan

What is the uses of Encryption Vlan under the Dot11Radio 0 interface?

I tried to access Internet without these two commands and it works.

I read from the web that it is some sort of security. How can it provide security when i still can access internet with these two commands?

interface Dot11Radio0


encryption vlan xx key 1 size 40bit 7 xxxxxxxxxxxx transmit-key

encryption vlan xx mode wep mandatory


Re: Encryption Vlan

Use the encryption key configuration interface command to define a WEP key used for data encryption on the wireless LAN or on a specific virtual LAN (VLAN).. For that You need to configure static WEP keys only if your access point supports client devices that use static WEP. If all the client devices that associate to the access point use key management (WPA, CCKM, or 802.1x authentication) you do not need to configure static WEP keys. But keep in mind that Encryption VLAN is not supported on bridges.