ZyXEL Confidential 
issue will be solved by a firmware update. 
When using 2.4GHz bands, current design is optimized for channels 1,6,11. 
4. Installation and upgrade notes 
None 
5. Downgrade notes 
None 
©2007 Extricom All rights reserved page 2 of 4 
Release notes 
6. Operation notes 
None 
7. Known limitations 
Short preamble removed from GUI (WEB) 
Maximum number of BSSIDs is 20 instead of 32. 
There is no support for Novell IPX . 
ZyXEL v1.00_ZT.0_b1 release notes: 
1. New Features and functionalities 
Improved Rate Adaptation thresholds. 
New ZyXEL GUI 
2. Solved issues and limitations 
SOLVED – Power save bit in control frames. 
SOLVED – WPA key in WPA-PSK mode is now renewed after renaming of an 
ESSID. There is no need to re-enter the pass phrase in ASCII for the new ESSID. 
When in WPA pass phrase HEX mode rename of the ESSID is blocked. Only in 
ASCII mode renaming of the ESSID is possible. 
SOLVED – Adaptation did not start at highest rate. 
SOLVED – ASCII characters 32-126 may be used in the pass phrase. Other special 
characters should be avoided. 
3. Reported issues and solutions 
WEP Keys – WEP works with key index 1 only. Use WEP key index 1. 
Redundant authentication packet sent by Centrino (while being associated) is 
ignored by switch. As a result, Centrino may rarely disconnect and reconnect. This 
may be observed under heavy traffic only. 
Multiple RADIUS servers support: Use only one Radius server IP address for all 
SSIDs. Same server should be used for all SSIDs 
EAPOL_START is ignored by switch (to avoid DoS attacks) 
Certain wireless clients do not connect to the system in pure 802.11g. Use mixed 
mode in order to support these clients. 
According to the standard ESSID may be up to 32 Alphanumeric characters only. 
When working with SpectraLink handsets in WPA-PSK, it is recommended to 
manually add the following lines to the XML configuration file: 
In <channel> tag 
©2007 Extricom All rights reserved page 3 of 4 
Release notes 
<ignore_rates_num>0</ignore_rates_num> 
In <security> tag 
<key_timeout>3000000</key_timeout> 
<key_timeout_count>5</key_timeout_count> 
Advisory: number of APs should not be divisible by DTIM value e.g eight APs and 
DTIM=4 is not a good selection, chose DTIM=3 in such a case. 
4. Installation and upgrade notes