10-07-2015 04:36 AM - edited 07-05-2021 04:03 AM
Hello,
we have just installed a new cisco wireless infrastructure. And actually it works fine. But our Prime (V2.2) is showing the following critical error for most of our Accesspoints, not for all:
Access point 'OV-B-BM1-AP-03' associated with controller
'OV-B-V05-WLC-1' draws low power from Ethernet. Failure reason: 'The
AP draws 15.4 watts from Ethernet'.
We have 2702 APs connected to a WLC 5508 (v8.0.120.0) and most of the switches are WS-C2960+24PC-L with 12.2(50)SE5, 12.2(55)SE7 and 15.0(2)SE6. Some of the APs are connected with Motorola Injectors but they have the same problem.
This is the example of one of the switches:
OV-B-V09-ASW-1#sh power inline
Available:370.0(w) Used:323.4(w) Remaining:46.6(w)
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/1 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/2 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/3 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/4 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/5 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/6 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/7 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/8 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/9 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/10 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/11 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/12 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/13 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/14 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/15 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/16 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/17 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/18 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/19 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/20 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/21 auto on 15.4 AIR-CAP2702E-E-K9 4 15.4
Fa0/22 auto off 0.0 n/a n/a 15.4
Fa0/23 auto off 0.0 n/a n/a 15.4
Fa0/24 auto off 0.0 n/a n/a 15.4
This is how the ports are configured, nothing special regarding the power.
!
interface FastEthernet0/1
switchport access vlan 251
switchport mode access
spanning-tree portfast
As far as we know, POE+ is actually required, but it works without as well. The only thing is that the Prime Errors are kind of annoying.
Any suggestions? Thanks in advance
Solved! Go to Solution.
10-13-2015 06:10 PM
They need Poe+ for full feature set. See this blog post for details
http://www.my80211.com/home/2015/10/6/which-antenna-gets-deactivated-when-you-provide-less-than-fu.html
10-13-2015 06:10 PM
They need Poe+ for full feature set. See this blog post for details
http://www.my80211.com/home/2015/10/6/which-antenna-gets-deactivated-when-you-provide-less-than-fu.html
10-13-2015 08:17 PM
I just have to endorse this .. don't know why ... I just do .. LOL
10-16-2015 01:28 AM
Hmmm yea, I don`t know why, but I guess I heard this before. ;-)
10-16-2015 01:27 AM
Thank you. Good to know where exactly the Prime is getting the message from. I checked that and it looks just like in the example. One Antenna is disabled. But like i said, that`s ok. We dont need full feature set. What I need is a Prime not confusing me with an error for every singe AP. Do you know how i get rid of the messages permamently?
10-30-2015 07:24 AM
You cannot get rid of it, I think, but you may set the Severity for this Alarm on Informational and it will no longer show in the Alarm Summary.
10-30-2015 08:19 AM
You could try to go into the AP config on the WLC and check the box for pre-standard power.
Or you coudl disable CDP on the switch ports, but I have never cared for that option.
HTH,
Steve
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide