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4006 with ws-x4184 and ws-4284 and NO INLINE POWER???

Level 1
Level 1

Hello everyone, this is weird.

I have a 4006, with a sup III, 3x 400W power supplies and yet when I do "show power" inline power shows available 0 and none of my phones turn up.

I've tried to configure power to auto, switchport to 802.1P, setup VLANs and all for nothing, the chassis does not seem to supply inline power on either card.

Any ideas or recommendation?


4 Replies 4

Level 5
Level 5

Correct me if I am wrong. We have 4006 CatOS with IP Phones also.

4006 does support inline power but you need Power Entry Module and External Power Shelf and Power Supplies. After you install those part, then the IP Phone can get the power from WS-X4148-RJ45V module. Remember not WS-X4148, it is WS-X4148-RJ45V.

Here is the link:

Please rate the helpful post.


You are right, it's a WS-X4148V-RJ45 but I also have a WS-X4248.

I thought one of them would power up using the power supplies in the chassis, according to the docs I've read so far.

I have already ordered th PEM and external chassis so i can test early next week.

I just did one. It works well, but take into consideration that spending the $1500 on the powershelf, the 4006 is end of life. The 4500 has replaced it. The blades you have, will work in the new 4500 ok.


Would I be able to power all phones plugged in to a WS-4248V-RJ45 using the setup below?

I want to fully populate the chassis

Chassis Type : WS-C4006

Power consumed by backplane : 0 Watts

Mod Ports Card Type Model Serial No.


1 2 Supervisor III 1000BaseX (GBIC) WS-X4014

2 48 10/100BaseTX (RJ45)V WS-X4148-RJ45V

3 48 10/100BaseTX (RJ45)V, Cisco/IEEE WS-X4248-RJ45V

Power Fan Inline

Supply Model No Type Status Sensor Status

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

PS1 WS-X4008 AC 400W good good n.a.

PS2 WS-X4008 AC 400W good good n.a.

PS3 WS-X4008 AC 400W bad/off bad/off n.a.

PEM WS-X4095-PEM -- good none none

Power supplies needed by system : 2

Power supplies currently available : 2

Power Summary Maximum

(in Watts) Used Available

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

System Power (12V) 260 750

Inline Power (-50V) 11 1660

Backplane Power (3.3V) 0 0

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

Total 271 2410