Cisco Cisco IOS Software Release 12.2(55)SE

When line rate traffic is passing through a dynamic port, and you enter the switchport access vlan 
dynamic interface configuration command for a range of ports, the VLANs might not be assigned 
correctly. One or more VLANs with a null ID appears in the MAC address table instead.

The workaround is to enter the switchport access vlan dynamic interface configuration command 
separately on each port. (CSCsi26392)

When you are prompted to accept the security certificate and you click No, you only see a blank 
screen, and the device manager does not launch. 

The workaround is to click Yes when you are prompted to accept the certificate. (CSCef45718)

When you successfully upgrade an image by using device manager and click No when prompted to 
reload the image, device manager becomes unusable. 

The workaround is to manually reload the switch. (CSCsj88169)

You cannot create and manage switch clusters through the device manager. To create and manage 
switch clusters, use the CLI or Cisco Network Assistant.

We recommend this browser setting to speed up the time needed to display the device manager from 
Microsoft Internet Explorer. 

From Microsoft Internet Explorer:

Choose Tools > Internet Options. 

Click Settings in the “Temporary Internet files” area. 

From the Settings window, choose Automatically.

Click OK.

Click OK to exit the Internet Options window.

The HTTP server interface must be enabled to display the device manager. By default, the HTTP 
server is enabled on the switch. Use the show running-config privileged EXEC command to see if 
the HTTP server is enabled or disabled.