08-30-2010 06:11 PM - edited 07-03-2021 07:08 PM
I have an AIR
-AP-1252AG-A-K9 AP connected to a WS-C3750-48-PS-S and I am getting an error:
%CDP_PD-2-POWER_LOW: - NON_CISCO-NO_CDP_RECEIVED
What do I need to do to clear this error. The STATUS LED blinks RED.
Solved! Go to Solution.
08-30-2010 06:47 PM
Means one of two things:
1. Your switch is not providing the right amount of power to the AP. The 1250 requires a minimum of 15.4w to 19.4w of PoE.
2. Your APs running an old IOS which require no less than 19.4w of power.
Solution:
1. Remove one of the two modules would work.
2. Upgrade to the latest IOS version to enable the 1250 to operate at 15.4 with both radios operational.
Please do not forget to rate useful posts. Thanks.
08-30-2010 06:51 PM
Same reason as above.
1. You are running an old IOS that forces the AP to operate at 15.4w
2. Your switch is providing 15.4w PoE.
You can also get a PWR-INJ4.
08-30-2010 07:00 PM
I am running 12.4(10b)JA3. What IOS do you recommend I use?
Minimum requirement is 12.4(10b)JDA3.
So if the switch is providing 15.4w, that is not enough for this AP?
It's not. The 1250 requires a minimum of 19.5w of power using the old IOS. The new IOS as previously posted will allow users to use 15.4w and allow use of both radios AT A COST of lower MCS rates.08-30-2010 07:11 PM
If the solution provided was successful, please don't forget to mark this topic as "Answered". Thanks.
08-30-2010 08:34 PM
Using a TFTP Server to Return to a Previous Release
http://www.cisco.com/en/US/docs/wireless/access_point/conversion/lwapp/upgrade/guide/lwapnote.html#wp160918
Please don't forget to rate our useful posts. Thanks.
08-30-2010 08:52 PM
Is there anyway I can recover this?
Yes, please upgrade your IOS to the level I've posted.08-31-2010 04:47 PM
But how can I do that in the "rommon" state the AP lookslike it is in? I cannot BOOT flash: and I cannot tftp at all. Any suggestions at this point would be appreciated.
Have you gone through this link I've posted previously? You have copied the .TAR file into the AP, deleted the .BIN file and rebooted the AP. Since the AP can't read .TAR file, it went into ROMMON. The easiest way to fix the issue and get the right IOS into your AP is to follow the link I've posted previously (which I've re-posted again below).Using a TFTP Server to Return to a Previous Release
http://www.cisco.com/en/US/docs/wireless/access_point/conversion/lwapp/upgrade/guide/lwapnote.html#wp160918
Please don't forget to rate our useful posts. Thanks.
09-01-2010 12:09 AM
Hi,
Under the interface on the switch that the AP is connected to, are you sure that CDP is enabled? make sure it is.
if CDP is working fine on the switch, try to issue those two commands on your AP
power inline negotiation injector override power inline negotiation prestandard source
et me know if this works.
09-02-2010 06:08 PM
Can you please do a "sh version"?
What power source is the AP connected to?
09-02-2010 06:50 PM
Can you reboot the AP and post the show logs after about 5 minutes (takes time for the radios to come up) as well as "sh ip int brief"?
08-30-2010 06:47 PM
Means one of two things:
1. Your switch is not providing the right amount of power to the AP. The 1250 requires a minimum of 15.4w to 19.4w of PoE.
2. Your APs running an old IOS which require no less than 19.4w of power.
Solution:
1. Remove one of the two modules would work.
2. Upgrade to the latest IOS version to enable the 1250 to operate at 15.4 with both radios operational.
Please do not forget to rate useful posts. Thanks.
08-30-2010 06:49 PM
I will upgrade to the latest IOS. I also saw this error:
%DOT11-4-DIVER_USED: Interface Dot11Radio1, Mcs rates 8-15 disabled due to only one transmit or recieve antenna enabled
Can you tell me what is needed to resolve this error.
08-30-2010 06:51 PM
Same reason as above.
1. You are running an old IOS that forces the AP to operate at 15.4w
2. Your switch is providing 15.4w PoE.
You can also get a PWR-INJ4.
08-30-2010 06:55 PM
I am running 12.4(10b)JA3. What IOS do you recommend I use? So if the switch is providing 15.4w, that is not enough for this AP?
08-30-2010 07:00 PM
I am running 12.4(10b)JA3. What IOS do you recommend I use?
Minimum requirement is 12.4(10b)JDA3.
So if the switch is providing 15.4w, that is not enough for this AP?
It's not. The 1250 requires a minimum of 19.5w of power using the old IOS. The new IOS as previously posted will allow users to use 15.4w and allow use of both radios AT A COST of lower MCS rates.08-30-2010 07:11 PM
If the solution provided was successful, please don't forget to mark this topic as "Answered". Thanks.
08-30-2010 08:25 PM
I may have totally reset the AP. This is the stage it is in right now.
ap: set
DEFAULT_ROUTER=10.0.0.1
ENABLE_BREAK=no
IP_ADDR=10.0.0.1
MANUAL_BOOT=no
NETMASK=255.255.255.224
TERMLINES=0
ap: dir
List of filesystems currently registered:
flash[0]: (read-write)
xmodem[1]: (read-only)
null[2]: (read-write)
tftp[5]: (read-only)
ap: set
DEFAULT_ROUTER=10.0.0.1
ENABLE_BREAK=no
IP_ADDR=10.0.0.1
MANUAL_BOOT=no
NETMASK=255.255.255.224
TERMLINES=0
ap: dir flash:
Directory of flash:/
2 -rwx 108
3 -rwx 1048
4 -rwx 5
5 -rwx 6440960
25424384 bytes available (6444544 bytes used)
Please help me to recover this AP.
Thanks again,
08-30-2010 08:34 PM
Using a TFTP Server to Return to a Previous Release
http://www.cisco.com/en/US/docs/wireless/access_point/conversion/lwapp/upgrade/guide/lwapnote.html#wp160918
Please don't forget to rate our useful posts. Thanks.
08-30-2010 08:42 PM
My problem is I did not order an externL power supply since I intended to use my PoE switch. Is there anyway I can recover this?
08-30-2010 08:52 PM
Is there anyway I can recover this?
Yes, please upgrade your IOS to the level I've posted.08-31-2010 08:13 AM
But how can I do that in the "rommon" state the AP lookslike it is in? I cannot BOOT flash: and I cannot tftp at all. Any suggestions at this point would be appreciated.
Thanks again.
08-31-2010 04:47 PM
But how can I do that in the "rommon" state the AP lookslike it is in? I cannot BOOT flash: and I cannot tftp at all. Any suggestions at this point would be appreciated.
Have you gone through this link I've posted previously? You have copied the .TAR file into the AP, deleted the .BIN file and rebooted the AP. Since the AP can't read .TAR file, it went into ROMMON. The easiest way to fix the issue and get the right IOS into your AP is to follow the link I've posted previously (which I've re-posted again below).Using a TFTP Server to Return to a Previous Release
http://www.cisco.com/en/US/docs/wireless/access_point/conversion/lwapp/upgrade/guide/lwapnote.html#wp160918
Please don't forget to rate our useful posts. Thanks.
08-31-2010 05:30 PM
I have recoverd the AP using your recommendations and with an external power adapter. I have upgraded the IOS to the latest version c1250-k9w7-mx.124-21a.JY . I still get the original error:
%CDP_PD-2-POWER_LOW: - NON_CISCO-NO_CDP_RECEIVED (0000.0000.0000)
Any suggestions?
Thanks.
09-01-2010 12:09 AM
Hi,
Under the interface on the switch that the AP is connected to, are you sure that CDP is enabled? make sure it is.
if CDP is working fine on the switch, try to issue those two commands on your AP
power inline negotiation injector override power inline negotiation prestandard source
et me know if this works.
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