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Upgrading the PoE Controller Software

 

Each Junos OS image for an EX Series switch that supports PoE contains the most recent version of the PoE controller software at the time the Junos OS image was built. When you upgrade Junos OS on your switch, the new image might contain a more recent version of the PoE controller software than is currently running on the PoE controller. You can upgrade your PoE controller software by requesting that the more recent version of the software contained in the Junos OS image be downloaded to the controller.

Note

Powered devices are not guaranteed to receive power while the new software is being downloaded to the PoE controller, a process that can take up to 10 minutes. In addition, during the software download, some PoE operational commands, such as show poe interface, might not show correct output. We recommend that you upgrade your PoE controller software during a regularly scheduled maintenance window.

Note

On an EX8200 Virtual Chassis, you cannot execute PoE commands on the XRE200 External Routing Engine. You can execute PoE commands only on the member EX8200 switches. Use the request session member member-id command to open a CLI session on a member switch.

This topic covers:

Determining Whether the PoE Controller Software Needs Upgrading

To determine whether the version of the PoE controller software supplied with Junos OS is more recent than the version of the software currently running on the PoE controller, enter the following command:

user@switch> show poe controller

The New PoE software upgrade available text in the output indicates that the PoE controller software is out-of-date and needs to be upgraded.

For Virtual Chassis or switches with PoE line cards, the output of the show poe controller command indicates which members of a Virtual Chassis or which PoE line cards have out-of-date PoE controller software:

user@switch> show poe controller

In the preceding example, member 4 of the Virtual Chassis has an out-of-date PoE controller software.

Note

We recommend that all member switches of a Virtual Chassis or all line cards in a switch run the same version of the PoE controller software.

Upgrading the PoE Controller Software

To upgrade the PoE controller software for a standalone switch with built-in PoE interfaces, enter:

user@switch> request system firmware upgrade poe fpc-slot 0

To upgrade the PoE controller software on a specific Virtual Chassis member or line card on a switch, enter:

user@switch> request system firmware upgrade poe fpc-slot 8

To upgrade the PoE controller software on all members of a Virtual Chassis or all line cards on a switch, enter:

user@switch> request system firmware upgrade poe fpc-slot all-members

Monitoring the Upgrade Progress

Use the show poe controller command to monitor the progress of the controller software upgrade:

user@switch> show poe controller

The Status field is updated during the download process to show the following stages of the download:

  • DOWNLOAD_INIT

  • SW_DOWNLOAD (n%)

When the software upgrade is complete, the New PoE software upgrade available text is no longer displayed for the particular FPC.

Note

If you are upgrading the PoE controller software to enable enhanced PoE, the Status field for the controller shows AF_ENHANCE after the upgrade completes, indicating that the controller now supports enhanced PoE. The default maximum power per port is not automatically increased as a result of the upgrade—it is still 15.4 W per port. You must explicitly set the maximum power for a port to 18.6 W. Enhanced PoE is supported in Junos OS Release 11.1 or later on EX3200 switches and on EX4200-P or EX4200-T model switches.