What is IE ID 221 in probe response?

[Bar, Eitan]

Hi Denis,

This IE belongs to a feature called 4X that is supported on AP that contain TI chipsets. It uses the same OID as WPA and WME (0xDD). 
- Length of OID is 4. (0x04)
- OUI is TI's OIU (0x080028).
- The last 0x00 probably indicates this feature is turned off.

In anyway, the parser should ignore this OUI and simply continue parsing other IEs.

Hope this helps.

Regards,
 Eitan

-----Original Message-----
From: hostap-bounces+eitanb=ti.com at shmoo.com [mailto:hostap-bounces+eitanb=ti.com at shmoo.com] On Behalf Of Denis Vlasenko
Sent: Thursday, July 28, 2005 10:27 AM
To: hostap at shmoo.com
Subject: What is IE ID 221 in probe response?

Hi folks, Jouni,

A user reported that he is receiving probe responses with unknown
IE ID 221. IE bytes look like this:

DD 04 08 00 28 00

What is this? I googled for it but found nothing...

Just in case, this is a full dump of probe response packet:

fc: ? ? ?50 00
dur: ? ? 02 01
ra: ? ? ?00 80 C8 AB 41 D4
ta: ? ? ?00 80 C8 AA CF 07
bssid: ? 00 80 C8 AA CF 07
seq: ? ? C0 C9
tm: ? ? ?0B A4 BA 30 01 00 00 00
bcn_int: 64 00
cap_info:51 00
essid: ? 00 09 62 69 65 73 73 6D 61 6E 6E
rates: ? 01 05 82 84 8B 96 AC
chan: ? ?03 01 06
???: ? ? DD 04 08 00 28 00

20:25:46 acx: unknown EID 221 in mgmt frame at offset 57

--
vda

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