[maemo-users] [maemo-users] 770 And Cisco Wireless, Can't connect via WPA

From: Jim Thompson jim at netgate.com
Date: Thu Mar 2 22:45:44 EET 2006
Clem Taylor wrote:

>On 3/2/06, Steve Johnson <gnuguy at gmail.com> wrote:
>>The model is a Cisco Aironet 1242AG running firmware 12.3(7)JA.  We
>>are running only the G radio - Currently it is running wpa-psk for key
>>management and allowing either tkip or aes for encryption.
>I'm using WPA Pre-Shared Key with TKIP+AES on a Linksys WRT54G (with
>DD-WRT firmware). Normally, things work fine, but I have noticed if I
>startup a device on the network the spews ~1mbps of multicast RTP
>packets, I can't connect to the wireless network with the 770. The
>problem is that the multicast packets leak from the wired network to
>the wireless network (no IGMP snooping or multicast filtering on the
>WRT54G). This doesn't cause a problem for faster devices, but the 770
>does all the 802.11 crypto in software and doesn't have enough
>computes to decrypt all the packets. As a result it starts dropping a
>large percentage of the incoming packets which prevents the
>negotiation process from succeeding. Maybe you have a similar problem
>on your network at work.
>It would be nice if the 770++ did more of the wireless crypto stuff in
>hardware so this type of thing isn't so
>much of a problem.

Why is the AP forwarding Data MPDUs to a non-associated station?


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