3Com 5500-EI Getting Started Guide - Page 84

Solving Communication Problems, Error message indicating that the SFP transceiver is invalid

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84 CHAPTER 5: PROBLEM SOLVING 3 Power cycle the unit. To do this, remove and reconnect the AC mains supply. If the unit has no AC main supply, remove and reconnect the DC RPS supply. 4 If another fan failure warning message is generated via the Command Line Interface or the Web interface, return the unit to 3Com. Unit fails, no SNMP fan failure message is received 1 Power cycle the unit. To do this, remove and reconnect the AC mains supply. If the unit has no AC mains supply, remove and reconnect the DC RPS supply. 2 Check the command line interface (display logbuffer command) to determine whether a thermal shutdown has occurred. 3 If no, return the unit: If yes, check that: ■ The air vents are not obstructed. ■ The ambient temperatures and environmental conditions meet those specified in Appendix C on page 127. 4 Power cycle the unit. If a further thermal shutdown occurs, and all environmental conditions are satisfactory, return the unit to 3Com. Error message indicating that the SFP transceiver is invalid The switch has identified that the SFP does not meet the minimum requirements for the switch and has disabled the port. To correct this problem, completely remove the SFP and replace it with a 3Com approved SFP. See "Approved 1000BASE-X SFP Transceivers" on page 47 and "Approved 100BASE-X SFP Transceivers" on page 48. Error message indicating that the SFP transceiver is faulty To correct this problem, completely remove the SFP and then reinsert it. Alternatively, insert another identical SFP. If the problem persists, contact 3Com Technical Support. Solving Communication Problems If you experience communication problems with the switch, ensure that: ■ The switch IP address and management VLAN ID has been configured.

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84
C
HAPTER
5: P
ROBLEM
S
OLVING
3
Power cycle the unit. To do this, remove and reconnect the AC mains
supply. If the unit has no AC main supply, remove and reconnect the DC
RPS supply.
4
If another fan failure warning message is generated via the Command
Line Interface or the Web interface, return the unit to 3Com.
Unit fails, no SNMP fan failure message is received
1
Power cycle the unit. To do this, remove and reconnect the AC mains
supply. If the unit has no AC mains supply, remove and reconnect the DC
RPS supply.
2
Check the command line interface (
display logbuffer
command)
to determine whether a thermal shutdown has occurred.
3
If no, return the unit:
If yes, check that:
■
The air vents are not obstructed.
■
The ambient temperatures and environmental conditions meet those
specified in Appendix C on page 127.
4
Power cycle the unit. If a further thermal shutdown occurs, and all
environmental conditions are satisfactory, return the unit to 3Com.
Error message indicating that the SFP transceiver is invalid
The switch has identified that the SFP does not meet the minimum
requirements for the switch and has disabled the port. To correct this
problem, completely remove the SFP and replace it with a 3Com
approved SFP. See “Approved 1000BASE-X SFP Transceivers” on page 47
and “Approved 100BASE-X SFP Transceivers” on page 48.
Error message indicating that the SFP transceiver is faulty
To correct this problem, completely remove the SFP and then reinsert it.
Alternatively, insert another identical SFP. If the problem persists, contact
3Com Technical Support.
Solving
Communication
Problems
If you experience communication problems with the switch, ensure that:
■
The switch IP address and management VLAN ID has been configured.