PoE Power-Deny

[lat_core92]

Hi 

I have been having problems lately.
It is about a C4500 switch.
The switch is using POE + and the power seems to be sufficient.
However, it shows that when the CCTV is actually connected, the power is insufficient.

Other switches were resolved by rebooting. but it will happen again

In the past between CDP and LLDP active.

Current state is lldp up, cdp disable.

I wonder why.

%ILPOWER-5-ILPOWER_POWER_DENY: Interface Gi3/48: inline power denied. Reason: Requested power(16211) exceeds interface or module capability.

Gi3/47 auto power-deny 0.0 0.0 n/a n/a
Gi3/48 auto power-deny 0.0 0.0 n/a n/a
--------- ------ ---------- ---------- ---------- ------------------- -----

Totals: 36 on 814.1 773.4

Power Summary Maximum
(in Watts) Used Available
---------------------- ---- ---------
System Power (12V) 1116 1960
Inline Power (-50V) 5092 7500
Backplane Power (3.3V) 40 40
---------------------- ---- ---------
Total 6248 (not to exceed Total Maximum Available = 9000)

[Leo Laohoo]

Post the complete output to the following commands: 

1. sh version; and
2. sh run interface Gi3/48

[lat_core92]

TPS_2_C4500#show version
Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500es8-UNIVERSAL-M), Version 03.06.05.E RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Thu 02-Jun-16 18:26 by prod_rel_team

Cisco IOS-XE software, Copyright (c) 2005-2015 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0. The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.
(http://www.gnu.org/licenses/gpl-2.0.html) For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.

ROM: 15.1(1r)SG5
TPS_2_C4500 uptime is 8 weeks, 1 day, 30 minutes
Uptime for this control processor is 8 weeks, 1 day, 32 minutes
System returned to ROM by power-on
System restarted at 12:25:56 KST Sun Feb 19 2017
Running default software
Jawa Revision 3, RadTrooper Revision 0x0.0x41, Conan Revision 0x1449

Last reload reason: power-on

License Information for 'WS-X45-SUP8-E'
License Level: entservices Type: Permanent
Next reboot license Level: entservices

TPS_2_C4500#show run interface gi3/47
Building configuration...

Current configuration : 88 bytes
!
interface GigabitEthernet3/47
switchport access vlan 31
switchport mode access
end

TPS_2_C4500#
TPS_2_C4500#show run interface gi3/48
Building configuration...

Current configuration : 88 bytes
!
interface GigabitEthernet3/48
switchport access vlan 31
switchport mode access
end

[Leo Laohoo]

Can you post the complete output to the following commands: 

1. sh module; and
2. sh power detail

[lat_core92]

It was confirmed that the supply power per slot was different in C4510

[magnumpi83]

what does that mean? I'm having the same problem on a C4510

[tbpearson]

I ran into this same issue. I had a large amount of system wide power available on my 4510, yet still getting a power-deny on interfaces. lat_core92 is referring to the inline power limit for modules. From the first table in the 4500 datasheet, the maximum inline power is 1500W for slots 1 and 2; 750W slots 3, 4, and 7-10.