DES-3250TG Firmware Release Note  
Firmware: 4.50-B25
Hardware: A1
Date: Dec. 27, 2005

Problems Resolved:
1. Fix the security issues recently reported for unauthorized system access.
2. SNMP inquiry "dot1qVlanFdbId (OID is 1.3.6.1.2.1.17.7.1.4.2.1.3)" MIB failed issue. 
3. Device will hang up problem when performing “save” after running 11 days.
4. Device will enter exception mode (Task=web2) when using port scan tool to attack device.
5. Incorrect “type” display through SNMP to inquiry dot1qTpFdbTable MIB OID.
6. Session lock from Telnet/CLI after using TFTP upload configuration to 3Com TFTP server. 
7. Port security and ACL doesn’t work well after reboot.

Enhancements:

1.Stacking ability with DGS-3312SR R3.01-B20
2. Limit the access by passwords generated by "D-Link PWD calculator".
Before, if customers forgot their configured passwords, D-Link could generate passwords based on the MAC addresses provided by customers via D-Link HQ maintained PWD calculator. Thus customers can use those "backdoor" passwords via telnet/ web/ console to logon to their switch again.
Now the access of those passwords generated by "D-Link PWD calculator" will be limited to console access only.
This is to minimize the security concern.

Note:
This is a recommended security patch for your customers.
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DES-3250TG firmware 4.50-B13 (March. 03, 2005)

New features:
1.10M auto-negotiation function.
2. Port Description.
3. CPU Utilization Monitoring.
4. Cisco-like Port Security.
5. Stack with DGS-3312SR.

Note: If need stacking with DGS-3312SR, must upgrade the firmware of DGS-3312SR to R3.01-B14.

Fixed:
1.DES-3250TG + DEM-311gt only connect to dmc-700sc when port speed is 1000 full.
2. Customer's configuration cannot download to other three units of DES3250TG.

Note:
In R3 version, the DES-3250 support 255 static vlans and the R4.50-B10 
support 64 static vlans only.
So in this version, modify the vlan maximum to 255.

==============================================================================
DES-3250TG firmware 3.00-B09 (April 2004)

New features:

Fixed:
1. 192.168.255.x ip setting problem on web
2. Netscape Nevigator 4.7 (Mozilla 1.6) IP configuration in web problem
3, Cannot obtain SNTP time immediately after reboot, and need wait for 1 poll time (default 720 sec) to obtain the time.

IMPORTANT NOTICE: 
 * If your firmware version is 1.00.026, and if you want to upgrade to this phase III firmware, please upgrade 1.00.029 firmware first, and then upgrade this firmware.
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DES-3250TG firmware 3.00-B06 (Date: Dec. 10, 2003)

Fixes:
1. Cannot configure PVID from Web.

IMPORTANT NOTICE: 
 * If your firmware version is 1.00.026, and if you want to upgrade to this phase III firmware, please upgrade 1.00.029 firmware first, and then upgrade this firmware.
================================================================================

DES-3250TG Firmware 3.00-B05 (updated: Sept. 17, 2003)

New features:
1. Asymetric VLAN
2. SYS LOG
3. LACP
4. Max static VLANs: 64 ->255

IMPORTANT NOTICE: 
 * If your firmware version is 1.00.026, and if you want to upgrade to this phase III firmware, please upgrade 1.00.029 firmware first, and then upgrade this firmware.
================================================================================
Phase II Firmware
Firmware 2.00.017 (updated: June 3, 2003)
New features:
1. Port/MAC based 802.1x
2. 802.1w Rapid Spanning Tree
3. Access Control List
4. Simple Network Time Protocol (NTP)

IMPORTANT NOTICE: 
* If your firmware version is 1.00.026, and if you want to upgrade to this Rel II firmware, 
  please upgrade 1.00.029 firmware first, and then upgrade this firmware.
================================================================================
Phase I Firmware:
Firmware 1.00.029:

Fixed: 
1 Counter stopped while too many pkt going to cpu
2 Can NOT be upgraded to phase II code(>2M).   
3 After VLAN setting, it needs reboot device to take effect of setting. 

*** IMPORTANT NOTICE: 
This version is a "middle version" if firmware upgrading from 1.00.026 to 
released II (2.00.xxx) firmware
================================================================================

Runtime: 1.00.026

First release note. For the function/features, please refer to product data sheet.