5 – Diagnostics/Troubleshooting
POST Diagnostics
5-6 59043-01 A
If a Port Status LED shows an error indication, review the alarm log for messages
regarding the affected port. You can inspect the alarm log using the Alarm data
tab in SANbox Manager faceplate display or the Show Alarm command. Pertinent
alarm log messages will point to one or more of the following conditions:
■ E_Port isolation
■ Excessive port errors
5.1.2.1
E_Port Isolation
A Port Status LED error indication is often the result of E_Port isolation. An
isolated E_Port is indicated by a red link in the SANbox Manager topology display.
E_Port isolation can be caused by conflicting domain IDs, conflicting timeout
values, or conflicting zone membership between active zone sets. Refer to the
SANbox2-64 Switch Management User’s Guide for information about how to
change domain IDs, timeout values, and edit zoning.
Review the alarm log and do the following to diagnose and correct an isolated
E_Port:
1. Display the fabric domain IDs using the Show Domains command or the
Switch data tab in the SANbox Manager topology display. Are all domain IDs
in the fabric unique?
■ Yes - Continue.
■ No - Correct the domain IDs on the offending switches using the Set
Config Switch command or the SANbox Manager Switch Properties
window. Reset the port. If the condition remains, continue.
2. Compare the RA_TOV, ED_TOV, RT_TOV timeout values for all switches in
the fabric using the Show Config Switch command or the Switch data tab of
the SANbox Manager topology display. Is each timeout value the same on
every switch?
■ Yes - Continue.
■ No - Correct the timeout values on the offending switches using the
Set Config Switch command or the SANbox Manager Switch
Properties window. Reset the port. If the condition remains, continue.
