Cabletron Systems SmartSTACK ETHERNET ELS10-27, User Manual

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SmartSTACK Ethernet ELS10-27 Diagnostics and Troubleshooting
5-5
5.4 TROUBLESHOOTING
This section lists several situations that could happen while using the
SmartSTACK Ethernet ELS10-27, and suggests appropriate action.
Because every situation is potentially unique, the corrective actions
suggested here should be considered as guidelines only.
5.5 SMARTSTACK ETHERNET ELS10-27 DOES NOT
POWER UP
If your SmartSTACK Ethernet ELS10-27 does not power up, check each
one of the following:
¥ Make sure the power source is operational.
¥ Make sure the power cord is securely connected.
If the SmartSTACK Ethernet ELS10-27 still does not power up, contact
Cabletron Systems. Refer to Section 1.2 for more information.
5.5.1 Connectivity Problems
¥ Check for LED abnormalities.
¥ Check port status using LCM.
¥ Check for loose port connections.
¥ Check to see if the number of carrier losses is increasing using LCM.
This indicates that the connection is suspect.
¥ Check to see if the number of total collisions has dramatically
increased using LCM.
5.5.2 SmartSTACK Ethernet ELS10-27 Has Rebooted
¥ Use the LCM
ident
command to check the SmartSTACK Ethernet
ELS10-27 diagnostic codes, and call your authorized Cabletron
Systems representative.