Enterasys Networks V2H124-24P - Manual (Page 52)

Troubleshooting
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Installation
Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (such as the power cord or network
cabling), test them in an alternate environment where you are sure that all the other
components are functioning properly.
In-Band Access
You can access the management agent in the switch from anywhere within the
attached network using Telnet, a web browser, or other network management
software tools. However, you must first configure the switch with a valid IP address,
subnet mask, and default gateway. If you have trouble establishing a link to the
management agent, check to see if you have a valid network connection. Then
verify that you entered the correct IP address. Also, be sure the port through which
you are connecting to the switch has not been disabled. If it has not been disabled,
then check the network cabling that runs between your remote location and the
switch.
Note: The management agent accepts up to four simultaneous Telnet sessions. If the
maximum number of sessions already exists, an additional Telnet connection
will not be able to log into the system.
Stack Troubleshooting
If a stack fails to initialize or function, first check the following items:
• Check that all stacking cables are properly connected.
• Check if any stacking cables appear damaged.
• Check that no more than one Master Select button is pressed in.
• Check that all switches in the stack are powered on.
After checking all items, reboot all the switches in the stack. If the problem is still not
resolved, contact your dealer for assistance.