I currently have an older WS-C3560E-48PD-S that only has a 420 W power supply. We have hit our limit on power and we have a mid-span pannel that is available to us. We attempted to use the midspan but the devices continue to try and draw power from the POE port. Easy enough I thought, just use the "inline power never" command on the ports that are using the mid-span. When i did that on one of the ports the device would not power up at all. If I unplug the same device from that port and plug it into a mid-span port that is NOT connected to the 3560 the device poweres up and searches for an ethernet connection. The 3560E has a 2 year uptime and so we do have a reboot planned just to see if that works but I have not been able to find any documentation on whether you can mix and match POE with Mid-span and not break things.
Ports 29 and 44 are the ones in question here:
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Gi0/1 auto off 0.0 n/a n/a 15.4
Gi0/2 auto on 15.4 Ieee PD 0 15.4
Gi0/3 auto on 15.4 Ieee PD 0 15.4
Gi0/4 auto on 15.4 Ieee PD 0 15.4
Gi0/5 auto on 12.0 IP Phone 7945 3 15.4
Gi0/6 auto on 15.4 Ieee PD 0 15.4
Gi0/7 auto on 15.4 Ieee PD 0 15.4
Gi0/8 auto on 15.4 Ieee PD 0 15.4
Gi0/9 auto on 12.0 IP Phone 7945 3 15.4
Gi0/10 auto on 15.4 Ieee PD 0 15.4
Gi0/11 auto on 15.4 Ieee PD 0 15.4
Gi0/12 auto on 15.4 Ieee PD 0 15.4
Gi0/13 auto off 0.0 n/a n/a 15.4
Gi0/14 auto off 0.0 n/a n/a 15.4
Gi0/15 auto on 12.0 IP Phone 7945 3 15.4
Gi0/16 auto on 15.4 Ieee PD 0 15.4
Gi0/17 auto on 15.4 Ieee PD 0 15.4
Gi0/18 auto on 12.0 IP Phone 7945 3 15.4
Gi0/19 auto on 15.4 Ieee PD 0 15.4
Gi0/20 auto on 12.0 IP Phone 7945 3 15.4
Gi0/21 auto on 15.4 Ieee PD 0 15.4
Gi0/22 auto on 15.4 Ieee PD 0 15.4
Gi0/23 auto on 15.4 Ieee PD 0 15.4
Gi0/24 auto on 15.4 Ieee PD 0 15.4
Gi0/25 auto on 15.4 Ieee PD 0 15.4
Gi0/26 auto on 15.4 Ieee PD 0 15.4
Gi0/27 auto on 15.4 Ieee PD 0 15.4
Gi0/28 auto on 15.4 Ieee PD 0 15.4
Gi0/29 auto power-deny 0.0 n/a n/a 15.4
Gi0/30 auto on 15.4 Ieee PD 0 15.4
Gi0/31 auto off 0.0 n/a n/a 15.4
Gi0/32 auto off 0.0 n/a n/a 15.4
Gi0/33 auto off 0.0 n/a n/a 15.4
Gi0/34 auto off 0.0 n/a n/a 15.4
Gi0/35 auto on 12.0 IP Phone 7945 3 15.4
Gi0/36 auto off 0.0 n/a n/a 15.4
Gi0/37 auto off 0.0 n/a n/a 15.4
Gi0/38 auto off 0.0 n/a n/a 15.4
Gi0/39 auto off 0.0 n/a n/a 15.4
Gi0/40 auto off 0.0 n/a n/a 15.4
Gi0/41 auto off 0.0 n/a n/a 15.4
Gi0/42 auto off 0.0 n/a n/a 15.4
Gi0/43 auto on 15.4 Ieee PD 0 15.4
Gi0/44 auto power-deny 0.0 n/a n/a 15.4
Gi0/45 auto off 0.0 n/a n/a 15.4
Gi0/46 auto off 0.0 n/a n/a 15.4
Gi0/47 auto off 0.0 n/a n/a 15.4
Gi0/48 auto off 0.0 n/a n/a 15.4
Thanks in advance for any information
Barry Gates Jr.
Network Engineer II
UF and Shands Academic Health Center
