DES-3800 series Firmware Release Note 
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Firmware: 2.00.B30
Hardware: A1
Date: April 14, 2006
Enhancements:
1. Support Dual configuration 
2. Support STP Loopback Detection
3. Extends IP interface per VLAN from 2 to 10
4. Support Double VLAN
5. Support 802.1X Guest VLAN
6. Support IGMP V3
7. Support WRED congestion control
8. Support WAC (Web-based Access Control)
9. Support per port limit IP multicast address range
10. Rename the “CPU protection” with the “Safeguard Engine” feature.
11. Side fan and back fan (only for DES-3828P) log when failed or recovered.
12. RPS and main power supply log and trap
13. Support Route preference
14. Support per port shutdown function in the Broadcast storm control 
15. Remove supporting for legacy PD in PoE function

Problems Resolved:
1. The "zoom in" and " zoom out" functions were opposite in the SIM topology
2. Bandwidth Control doesn’t work from Web
3. SSHv2 can not work properly.
4. DES-3828P does not have the accuracy Power display, for example Power limit set to 15.4W, but the Current Power display is 16.7W.
5. When using D-View module to set ACL, ACL function fails
6. When using Tera Term SSH version 2.3.4, the program gives an error message saying "The program does not understand the servers version of protocol" and Devices will get into Exception mode.
7. Fix bugs of log with external power supply (DPS-200)
8. UDP Broadcast (attack tool) causes SIM fail and device reboot

Note:
Because the Dual configuration, the system setting will be cleared after the firmware updated to R2. It’s strongly recommended the user to backup the original configuration then to reload it after the upgrading.
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Firmware: 1.00.B31
Hardware: A1
Date: Dec 27, 2005
Problems Resolved:
Fix the security issues recently reported for unauthorized system access.

Enhancements:
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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Firmware: 1.00.B23
Hardware: A1
Date:Aug 17, 2005

DES-3828/3828DC/3828P first release.
For functions support and configurations please refer to product spec and manuals for detail.