User manual

144 Publication 1783-UM003D-EN-E - December 2009
Chapter 5
Device Manager Issues
Following are some basic troubleshooting for issues related to displaying the
Device Manager Web interface.
Switch Performance
Following are some basic troubleshooting for issues related to switch
performance.
Issue Resolution
Device Manager Web interface does not
display
If you cannot display the Device Manager Web interface from your computer or laptop,
make sure that you entered the correct switch IP address in the browser.
If you entered the correct switch IP address in the browser, make sure that the switch and
your computer or laptop are in the same network or subnetwork. For example:
• If your switch IP address is 172.20.20.85 and your computer or laptop IP address is
172.20.20.84, both devices are in the same network.
• If your switch IP address is 172.20.20.85 and your computer or laptop IP address is
10.0.0.2, the devices are in different networks and cannot directly communicate without
a router. You must either change the switch IP address or change the computer or laptop
IP address.
• If the issue persists, follow the procedure in the Access Direct Managed Mode section
on page 146, and then update the switch network settings on the device manager
Express Setup window.
• If the issue still persists, follow the procedure in the Recover the Switch Firmware and
Restore Factory Defaults section on page 149.
Device Manager Web interface is not
operating properly
If the Device Manager Web interface does not operate properly (for instance, the device
manager is not responding), follow the procedure in the Access Direct Managed Mode
section on page 146, and then update the switch network settings on the Device Manager
Web interface Express Setup window.
If the issue persists, follow the procedure in the Recover the Switch Firmware and Restore
Factory Defaults section on page 149.
Device Manager Web interface is not
accessible through the network
If you cannot access the device manager remotely from a Web browser, follow the
procedure in the Access Direct Managed Mode section on page 146
.