Dell SmartFabric OS10 User Guide Release 10.5.3

High-power optical modules

OS10 supports high-power optical modules on switches with QSFP56-DD ports. This feature helps to prevent the risk of auto power shutdown and service disruptions because of high-power optic usage. Using this feature, you can:

• Monitor the maximum power rating on pluggable optics.
• Disable the optical module, if the maximum power exceeds the threshold permitted on the port.

Use the OS10 CLI to prevent such service disruptions. OS10 enables or disables high-power optics based on the following:

• Warning threshold—The platform specification defines this value. If you have configured to allow high-power optics, an optic with power rating below this threshold is enabled.
• Alarm threshold—The platform specification defines this value. A high-power optic with power rating above this threshold is disabled.

OS10 checks for the following:

• If you have enabled high-power optics on a port, OS10 checks the alarm threshold value. If the power rating of the optic is less than the alarm threshold value, the system powers up the optic.
• If you have disabled high-power optics on a port, OS10 checks the warning threshold value. If the power rating of the optic is less than the warning threshold, the system powers up the optic.
• If the optic's power rating is higher than both the warning and alarm thresholds, the system disables the optic.

Configuration notes

• Enable or disable high-power optics before or after you insert the pluggable optic.
• Use the allow high-wattage-optics command to power on an optic that was disabled earlier using the no allow high-wattage-optics command.
• If the interface is in breakout mode, apply this CLI command on the first subinterface.
• Configure this feature on each of the front-panel ports or for a range of ports using the interface range ethernet command.
• This feature is enabled by default. You do not have to explicitly configure it. If the switch supports QSFP56-DD ports and the power rating of the high-power optic is less than the alarm threshold, OS10 enables the high-power optic.

To disable high-power optics, enter the following command in INTERFACE CONFIGURATION mode:

OS10(conf-if-eth1/1/25:1)# no allow high-wattage-optics

To enable an optic that was disabled earlier using the no allow high-wattage-optics command, enter the following command in INTERFACE CONFIGURATION mode to enable it:

OS10(conf-if-eth1/1/26:1)# allow high-wattage-optics

The system triggers an alert in the form of an informational syslog message when a high-power optic is installed on the switch.

When a high-power optic is plugged in and is enabled, a message similar to the following appears:

<165>1 2017-04-07T17:05:47.733673+00:00 OS10 dn_alm 839 - - Node.1-Unit.1:PRI [event], Dell EMC (OS10) %EQM_MEDIA_PRESENT: Media inserted. Media QSFP56-DD 400GBASE-SR4.2 in slot:1 port:6 serial number:CN04HQ0005VG009 is high-power optics. Check system power allocation and actively monitor ambient temperatures to avoid service disruption.

When a high-power optic is plugged in, but is disabled, a message similar to the following appears in any of the following cases:

• You have previously configured the no allow high-wattage-optics command on the interface.
• The power rating of the optical module exceeds the Alarm threshold.

<165>1 2017-04-07T17:05:47.733673+00:00 OS10 dn_alm 839 - - Node.1-Unit.1:PRI [event], Dell EMC (OS10) %EQM_MEDIA_PRESENT: Media inserted. Media QSFP56-DD 400GBASE-SR4.2 in slot:1 port:6 serial number:CN04HQ0005VG009 is high-power optics and is disabled.

The show inventory media wattage command displays information about the plugged-in optic.