Brocade ICX 6450-24P PoE and PoE+ Limitations and Configuration

Recently ran into a minor issue when I was connecting Cisco Meraki MR72’s to a Brocade ICX 6450-24P. Connected 13 Cisco Meraki MR72’s. I was consoled into the switch so I noticed all ports showed getting power but the PoE was denied on port ethernet1/1/24. Looking at the command show inline power I noticed that all Cisco Meraki MR72’s were showing up as Class 4 and ports were doing by default 802.3at/30,000mWatts which means my 13th Access Point was not getting any power because ethernet1/1/24 had only 10,000mWatts left.

In order to resolve this so that I can get the last Cisco Meraki MR72 online. I first confirmed the power these Access Points require. And according to the documentation for Cisco Meraki MR72’s they do support 802.3af. My next step was to update the ports on the Brocade ICX 6450-24P as follows:

interface ethernet 1/1/24 dual-mode 1 disable spanning-tree root-protect spanning-tree 802-1w admin-edge-port inline power power-limit 15400 (THIS COMMAND BASICALLY FORCED THE PORT TO LIMIT THE POWER) stp-bpdu-guard

After I ran the above command inline power power-limit 15400 under couple of ports I had enough power available and was able to successfully bring up all 13 Access Points online. Here is a document that shows ICX 6430 – 6450 Data Sheet. Also check out the picture below, basically on a 24 port switch if you want all 24 ports to be able to operate at PoE+ you will need additional power supply.