General Question regarding BVI & Dot11

Unanswered Question
Dec 29th, 2008
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Hi There,

I have a general question concerning BVI & Dot11 interfaces on a 871W. I had to configure a Subinterface for the radio Interface to get he box running. This is the point which is a little confusing to me. Why do I have to work with subinterfaces to bring the radio up. Is it not possible to attach the radio interface to the bridge-group without using subinterfaces? There is only one VLAN (Vlan1 / native) in which all internal interfaces (fe & radio) should be member of. In order to bring the radio up I had to configure a subinterface for the radio and put this one in the bridge-group & Vlan. When I tried to to the same with the radio interface itself it did not come up (reset Status). Can anybody tell me why I need to use subinterfaces in this case? I like to understand.....


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mark.cronin Mon, 12/29/2008 - 05:14
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The BVI sub-interfaces map directly to the vlans that you create ie

BVI10 - VLAN 10

BVI20 - VLAN 20 (Guest WLAN)

This allows you to have 2 SSID WLANS which I think is the maximum for the 871W



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