Sfp Module Security And Identification; Monitoring Sfp Module Status; Monitoring Temperature - Cisco ME 3400 Software Configuration Manual
Ethernet access switch
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- Command reference manual (950 pages) ,
- Hardware installation manual (88 pages) ,
- Getting started manual (33 pages)
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Chapter 44
Troubleshooting
SFP Module Security and Identification
Cisco small form-factor pluggable (SFP) modules have a serial EEPROM that contains the module serial
number, the vendor name and ID, a unique security code, and cyclic redundancy check (CRC). When an
SFP module is inserted in the switch, the switch software reads the EEPROM to verify the serial number,
vendor name and vendor ID, and recompute the security code and CRC. If the serial number, the vendor
name or vendor ID, the security code, or CRC is invalid, the software generates a security error message
and places the interface in an error-disabled state.
The security error message references the GBIC_SECURITY facility. The switch supports SFP modules
Note
and does not support GBIC modules. Although the error message text refers to GBIC interfaces and
modules, the security messages actually refer to the SFP modules and module interfaces. For more
information about error messages, see the system message guide for this release.
If you are using a non-Cisco SFP module, remove the SFP module from the switch, and replace it with
a Cisco module. After inserting a Cisco SFP module, use the errdisable recovery cause gbic-invalid
global configuration command to verify the port status, and enter a time interval for recovering from the
error-disabled state. After the elapsed interval, the switch brings the interface out of the error-disabled
state and retries the operation. For more information about the errdisable recovery command, see the
command reference for this release.
If the module is identified as a Cisco SFP module, but the system is unable to read vendor-data
information to verify its accuracy, an SFP module error message is generated. In this case, you should
remove and re-insert the SFP module. If it continues to fail, the SFP module might be defective.
Monitoring SFP Module Status
You can check the physical or operational status of an SFP module by using the show interfaces
transceiver privileged EXEC command. This command shows the operational status, such as the
temperature and the current for an SFP module on a specific interface and the alarm status. You can also
use the command to check the speed and the duplex settings on an SFP module. For more information,
see the show interfaces transceiver command in the command reference for this release.
Monitoring Temperature
The Cisco ME switch monitors the temperature conditions. The switch also uses the temperature
information to control the fans. The temperature value is the temperature in the switch (not the external
temperature). Enter the show env temperature privileged EXEC command to see if the temperature is
okay or faulty.
On the Cisco ME-3400-12CS and ME-3400-2CS switches, you can use the show env temperature
status privileged EXEC command to display the temperature value, state, and thresholds. You can
configure only the yellow threshold level (in Celsius) by using the system env temperature threshold
yellow value global configuration command to set the difference between the yellow and red thresholds.
You cannot configure the green or red thresholds.
For more information, see the command reference for this release.
OL-9639-07
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
SFP Module Security and Identification
44-9
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Table of Contents
Troubleshooting
