https://community.extremenetworks.com/t5/extremeswitching-exos-switch/poe-issue-with-xos-summitx-21-1-4-4-patch1-3/m-p/61109#M17734 You could add a second PSU to the slot to increase the total power budget. The total wattage would be added together of both PSUs.<BR /> <BR /> I would check to see if this is happening with all of the 18 PDs, whether it is happening simultaneously, and whether it is happening on a single slot. Redistributing them would be a certain measure to ensure we are facing denied power due to the power budget. Tue, 23 Apr 2019 23:28:40 GMT Ty_Izzet 2019-04-23T23:28:40Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/poe-issue-with-xos-summitx-21-1-4-4-patch1-3/m-p/61106#M17731 Does anybody know if there is an issue with the Summit X460-G2-48p about denied power on ports? I was looking for summitx-21.1.4.4-patch1-3 release notes but I couldn't find them. Tue, 23 Apr 2019 05:01:17 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/poe-issue-with-xos-summitx-21-1-4-4-patch1-3/m-p/61106#M17731 Josimar_Rivera_ 2019-04-23T05:01:17Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/poe-issue-with-xos-summitx-21-1-4-4-patch1-3/m-p/61107#M17732 Josimar, it is possible the inline power is being exceeded on a switch or slot. Please review the following article for a start:<BR /> <BR /> https://gtacknowledge.extremenetworks.com/articles/Solution/APs-getting-Denied-Power-in-a-Stack<BR /> <BR /> If stacking is used, redistributing PDs among slots helps. Also check the PDs to see what class is being used. Tue, 23 Apr 2019 21:43:45 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/poe-issue-with-xos-summitx-21-1-4-4-patch1-3/m-p/61107#M17732 Ty_Izzet 2019-04-23T21:43:45Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/poe-issue-with-xos-summitx-21-1-4-4-patch1-3/m-p/61108#M17733 Ty Izzet, the switch is a Stack member, in fact there is only 18 PDs in that slot. According to the solution of the link does it mean that I've to install a redundant power supply?? Tue, 23 Apr 2019 23:18:54 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/poe-issue-with-xos-summitx-21-1-4-4-patch1-3/m-p/61108#M17733 Josimar_Rivera_ 2019-04-23T23:18:54Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/poe-issue-with-xos-summitx-21-1-4-4-patch1-3/m-p/61109#M17734 You could add a second PSU to the slot to increase the total power budget. The total wattage would be added together of both PSUs.<BR /> <BR /> I would check to see if this is happening with all of the 18 PDs, whether it is happening simultaneously, and whether it is happening on a single slot. Redistributing them would be a certain measure to ensure we are facing denied power due to the power budget. Tue, 23 Apr 2019 23:28:40 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/poe-issue-with-xos-summitx-21-1-4-4-patch1-3/m-p/61109#M17734 Ty_Izzet 2019-04-23T23:28:40Z