Define your range of interfaces;interface range GigabitEthernetx/x/x-xxthen enter the following commands for the defined interfaces;authentication order mabauthentication port-control automab

The "sh interface transceiver" command displays optical light levels per SFP installed interface;#sh int transceiverIf device is externally calibrated, only calibrated values are printed.++ : high alarm, + : high warning, - : low warning, -- : low al...

Hope these notes help;Configuration Note for Catalyst 2960 Switch Power over Ethernet Ports, Rel. 12.2(44)SE - Cisco

These notes should help. Play around with some of the commands and see what works for your unique situation without really breaking anything of course.Configuration Note for Catalyst 2960 Switch Power over Ethernet Ports, Rel. 12.2(44)SE - Cisco

This should help;https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960l/software/15-2_6_e/configuration_guide/b_1526e_consolidated_2960l_cg/b_1526e_consolidated_2960l_cg_chapter_0110.pdf