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McDATA 4416 Fibre Channel Switch Module Installation Guide
4-2
Logged-In LED Indications
Logged-In LED Indications
Port diagnostics are indicated by the Logged-In LED for each port as shown
in Figure 4-1.
Figure 4-1. Logged-In LED
The Logged-In LED has three indications:
• Continuous illumination: A device is logged in to the port.
• Flashing once per second: A device is logging in to the port.
• Flashing twice per second: The port is down, offline, or an error has
occurred.
If a Logged-In LED is flashing twice per second, review the event browser for
alarm messages regarding the affected port. You can also inspect the alarm
log using the Show Alarm command. If there is an error, alarm messages may
point to one or more of the following conditions:
• E_Port Isolation
• Excessive Port Errors
E_Port Isolation
A Logged-In LED error indication is often the result of E_Port isolation. An
isolated E_Port is indicated by a red link in the McDATA Embedded Web
Server topology display. E_Port isolation can be caused by the following:
• Security failure
• FL_Port is connected to another switch
•Conflicting domain IDs
• Conflicting timeout values
• Conflicting zone membership between active zone sets
Refer to the McDATA Switch Module Management Guide for information about
how to change domain IDs, timeout values, and edit zoning.
Logged-In LED