Specifications

A-3
VPN 3000 Series Concentrator Getting Started
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Appendix A Troubleshooting and System Errors
VPN Concentrator Manager Errors
The Manager displays
the Invalid Login or
Session Timeout screen.
The Manager session
has been idle longer
than the configured
timeout interval.
(The default timeout
interval is 600 seconds
(10 minutes).)
• No activity for
(interval) seconds.
The Manager resets
the inactivity timer
only when you
click an action
button (such as
Apply, Add, or
Cancel) or a link on
a screen—that is,
when you invoke a
different screen.
Entering values or
setting parameters
on a given screen
does not reset the
timer.
• Timeout interval set
too low for normal
use.
On the Administration | Access Rights | Access
Settings screen, change the Session Timeout
interval to a larger value and click Apply.
The Manager displays a
screen with the
message, “Error/ An
error has occurred while
attempting to perform
the operation.” An
additional error
message describes the
erroneous operation.
You tried to perform an
operation that is not
allowed.
The screen displays a
message that describes
the cause.
Click Retry the operation to return to the
screen where you were working and correct the
mistake. Carefully check all your previous
entries on that screen. The Manager attempts to
retain valid entries, but invalid entries are lost.
Click Go to main menu to go to the main
Manager screen.
The Manager displays a
screen with the
message, “You are using
an old browser or have
disabled JavaScript...”
The VPN Concentrator
Manager cannot work
with the browser that
you have invoked.
• You are using the
Manager with an
unsupported
browser.
• You are using the
Manager with an
obsolete browser.
• You are using a
browser that does
not have JavaScript
enabled.
Use Microsoft Internet Explorer version 4.0 or
higher.
Use Netscape Navigator version 4.5 or higher.
Be sure JavaScript is enabled in the browser.
(See the “Browser Requirements” section on
page 2-2 of this manual.)
Table A-1 VPN Concentrator Manager Errors (continued)
Symptom Problem Possible Cause Solution