Troubleshooting Cms Sessions - Cisco Catalyst 2950 Software Manual

Chapter 14 Troubleshooting

Troubleshooting CMS Sessions

Table 14-2
Table 14-2 Common CMS Session Problems
Problem
A blank screen appears when you
click Web Console from the CMS
access page.
The Applet notinited message
appears at the bottom of the
browser window.
In an Internet Explorer browser
session, you receive a message
stating that the CMS page might
not display correctly because your
security settings prohibit running
ActiveX controls.
For further debugging information, you can use the Java plug-ins Java console to display the current
status and actions of CMS. To display the Java console, select Start > Programs > Java Plug-in
Control Panel, and select Show Java Console.
78-11380-03
lists problems commonly encountered when using CMS:
Suggested Solution
A missing Java plug-in or incorrect settings could cause this problem.
CMS requires a Java plug-in order to function correctly. For instructions on
•
downloading and installing the plug-ins, refer to the Release Notes for the Catalyst
2950 Cisco IOS Release 12.1(6)EA2b.
Note If your PC is connected to the Internet when you attempt to access CMS, the
browser notifies you that the Java plug-in is required if the Java plug-in is not
installed. This notification does not occur if your PC is directly connected to
the switch and has no Internet connection.
• If the plug-in is installed but the Java applet does not initialize, do this:
– Select Start > Programs > Java Plug-in Control Panel. Click the Proxies tab,
and verify that Use browser settings is checked and that no proxies are enabled.
– Make sure that the HTTP port number is 80. CMS only works with port 80,
which is the default HTTP port number.
– Make sure the port that connects the PC to the switch belongs to the same VLAN
as the management VLAN. For more information about management VLANs,
see the "Management VLANs" section on page
You might not have enough disk space. Each time you start CMS, Java Plug-in 1.2.2
saves a copy of all the jar files to the disk. Delete the jar files from the location where the
browser keeps the temporary files on your computer.
A high security level prohibits ActiveX controls (which Internet Explorer uses to launch
the Java plug-in) from running. Do this:
Start Internet Explorer.
1.
From the menu bar, select Tools > Internet Options.
2.
Click the Security tab.
3.
Click the indicated Zone.
4.
Move the Security Level for this Zone slider from High to Medium (the default).
5.
6. Click Custom Level... and verify that these ActiveX controls and plug-ins are set to
either Prompt or Enable:
Download signed ActiveX controls.
•
Download unsigned ActiveX controls as safe.
•
• Initialize and script ActiveX controls not marked.
• Run ActiveX controls and plug-ins.
Catalyst 2950 Desktop Switch Software Configuration Guide
Troubleshooting CMS Sessions
8-3.
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