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

From: Clem Taylor clem.taylor at gmail.com
Date: Thu Mar 2 22:42:27 EET 2006
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.


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