DES-1228P Firmware Release Note  
Firmware: v1.30.12
Hardware: A2/A1
Date: Mar. 19th, 2008

Problems Resolved:
NA

Enhancements:
1. Support following features:
- Trusted Host
- Cable Diagnostics
- Management VLAN
- Asymmetric VLAN
- DSCP QoS

Note: 
1. This firmware v1.30.12 is for v1.30.xx upgrading only. If the device is with firmware v1.00.xx/v1.10.xx/v1.20.xx, please follow up the “New Firmware Upgrade Procedure “sheet to upgrade the firmware from v1.00.xx/v1.10.xx/v1.20.xx to v1.30.12.
   
2. This firmware v1.30.12 is backward compatible with previous hardware version A1.
==========================================================================
Firmware: v1.20.12
Hardware: A1
Date: Dec. 10th, 2007

Problems Resolved:
1. Fix the bug that switch will not respond Ping or Web request if users enabled SNMP Trap settings after few hours of operation; meanwhile the packet transmit and receive function works normally.
2. Fix the issue when receiving lot of leave messages in IGMP snooping, the switch will not respond Ping or Web request after few hours of operation.
3. Fix the bug of invalid VLAN when setting over 64 groups
4. Fix the invalid IGMP parameter settings, especially for Query Interval, Max Response Time, Robustness Variable and Last Member Query Interval.

Enhancements:
NA

========================================================================
Firmware: v1.20.08
Hardware: A1
Date: July 6, 2007

Problems Resolved:
1. Fix the incompatibility issue with DEM-311GT v.C1. When plugging and unplugging the DEM-311GT v.C1 several times, then the fiber port of switch can not link. After resetting switch, the fiber port can link well. 
2. Fix the switch authentication function error issue via Smart WLAN Manager. 

Enhancements:
1. 802.1ab LLDP
2. Add “Anti-Rouge AP” function (Only for Smart WLAN Manager)
========================================================================
Firmware: v1.20.07(Only for DCAN)
Hardware: A1
Date: July 2, 2007

Problems Resolved:
N/A 

Enhancements:
1. Add DSCP QoS function


Firmware: v1.10.00
Hardware: A1
Date: July 19, 2006

Problems Resolved:
1. Fix the lighting upside down issue of Link/Act LED and port speed LED for port 1-24.

Enhancements:
None

_____________________________________________________________________________________
Firmware: v1.00.05
Hardware: A1 
Date: Sep 11, 2006

Problems Resolved:
None

Enhancements:
First Release