Cisco Systems Switch Cisco Nexus Switch User Manual

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6-25
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-18634-01
Chapter 6 Managing the Device Hardware
EPLD Configuration
The possible Status field values for a fan module on the Cisco Nexus 7000 Series devices are as follows:
• If the fan module is operating properly, the status is ok.
• If the fan is physically absent, the status is absent.
• If the fan is physically present but not working properly, the status is failure.
On the Cisco Nexus 7010, each system fan module has 15 fans. If the State field for one of these fans
contains “failure” in the show environment fan command output, it also displays the number of the
failing fans (see
Example 6-9).
Example 6-9 Displaying a Cisco Nexus 7010 System Fan Tray Failure
switch# show environment fan
Fan:
------------------------------------------------------
Fan Model Hw Status
------------------------------------------------------
ChassisFan1 N7K-C7010-FAN-S 0.410 Ok
ChassisFan2 N7K-C7010-FAN-S 0.410 Ok
ChassisFan3 N7K-C7010-FAN-F 0.209 Ok
ChassisFan4 N7K-C7010-FAN-F 0.209 Ok
Fan_in_PS1 -- -- Ok
Fan_in_PS2 -- -- Ok
Fan_in_PS3 -- -- Absent
switch#
EPLD Configuration
The Cisco Nexus 7000 Series devices contain several programmable logical devices (PLDs) that provide
hardware functionalities in all modules. Cisco provides EPLD image upgrades to enhance hardware
functionality or to resolve known issues. PLDs include electronic programmable logical devices
(EPLDs), field programmable gate arrays (FPGAs), and complex programmable logic devices (CPLDs).
In this document, the term EPLD is used for FPGA and CPLDs.
This section includes the following topics:
• System Requirements, page 6-25
• Updated EPLDs, page 6-26
• Installation Guidelines, page 6-28
• Downloading the EPLD Images, page 6-28
• Preparing the EPLD Images for Installation, page 6-29
• Upgrading EPLD Images, page 6-31
• Displaying the EPLD Versions, page 6-37
System Requirements
This section includes the following topics:

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