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.
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.
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 Controller Maximum Power Guard Management Status Lldp index power consumption band Priority 0** 405.00W 0.00W 19W Class AT_MODE Disabled **New PoE software upgrade available. Use 'request system firmware upgrade poe fpc-slot <slot>' This procedure will take around 10 minutes (recommended to be performed during maintenance)
The New PoE software upgrade available text in the output indicates that the PoE controller software is out-of-date and needs to be upgraded.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of a Virtual Chassis or which PoE line cards have out-of-date PoE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 Controller Maximum Power Guard Management Status Lldp index power consumption band Priority 2 130.00W 120.34W 0W Class AF_ENHANCE Disabled 4** 410.00W 182.80W 0W Class AF_MODE Disabled **New PoE software upgrade available. Use 'request system firmware upgrade poe fpc-slot slot' This procedure will take around 10 minutes (recommended to be performed during maintenance)
In the preceding example, member 4 of the Virtual Chassis has an out-of-date PoE controller software.
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 Firmware upgrade initiated. Poe Upgrade takes about 10 minutes Use 'show poe controller' to get the download status
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 Firmware upgrade initiated. Poe Upgrade takes about 10 minutes Use 'show poe controller' to get the download status
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 Firmware upgrade initiated. Poe Upgrade takes about 10 minutes Use 'show poe controller' to get the download status
Monitoring the Upgrade Progress
Use the show poe controller command to monitor the
progress of the controller software upgrade:
user@switch> show poe controller Controller Maximum Power Guard Management Status Lldp index power consumption band Priority 0** 130.00W 0.00W 0W SW_DOWNLOAD(14%) Disabled **New PoE software upgrade available. Use 'request system firmware upgrade poe fpc-slot <slot>' This procedure will take around 10 minutes (recommended to be performed during maintenance)
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.
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.