Cisco 3750 doesnt take power inline auto!

Unanswered Question
Sep 3rd, 2009


Im trying to configure power over Ethernet for my cisco ip phone. My switch is 3750.

framedrelay(config-if)#power inline ?

auto Automatically detect and power inline devices

never Never apply inline power

framedrelay(config-if)#power inline a

framedrelay(config-if)#power inline auto

Command rejected: Not a Inline Power supported port.

I dont know why it isnt working. If its the version

framedrelay#show version

Cisco Internetwork Operating System Software

IOS (tm) C3750 Software (C3750-I5-M), Version 12.1(14)EA1, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2003 by cisco Systems, Inc.

Compiled Tue 22-Jul-03 13:17 by antonino

Image text-base: 0x00003000, data-base: 0x008F0CF8

ROM: Bootstrap program is C3750 boot loader

BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(11r)AX, RELEASE SOFTWARE (fc1)

framedrelay uptime is 1 day, 5 hours, 1 minute

System returned to ROM by power-on

System image file is "flash:c3750-i5-mz.121.14-EA1/c3750-i5-mz.121.14-EA1.bin"

cisco WS-C3750G-24TS (PowerPC405) processor (revision B0) with 120822K/10240K bytes of memory.

Processor board ID CAT0730X007

Last reset from power-on

Bridging software.

4 Virtual Ethernet/IEEE 802.3 interface(s)

28 Gigabit Ethernet/IEEE 802.3 interface(s)

The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address : 00:0D:65:66:E7:80

Motherboard assembly number : 73-7058-09

Power supply part number : 341-0045-01

Motherboard serial number : CAT0729003G

Power supply serial number : LIT0723009B

Model revision number : B0

Motherboard revision number : A0

Model number : WS-C3750G-24TS-E

System serial number : CAT0730X007

Switch Ports Model SW Version SW Image

------ ----- ----- ---------- ----------

* 1 28 WS-C3750G-24TS 12.1(14)EA1 C3750-I5-M

Configuration register is 0xF

Kindly help.



I have this problem too.
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bill.efthimiou Thu, 09/03/2009 - 21:07

Your model switch does not support the Power over Ethernet feature. Please take note of the model number: WS-C3750G-24TS.

The equivalent model switch which does support POE is the WS-C3750G-24PS. Notice the model number ends with PS instead of TS.

Check thefollowing datasheet for a description of all the various models:

I hope this helps.




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