- Community Home
- >
- Networking
- >
- Switching and Routing
- >
- Aruba & ProVision-based
- >
- Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО11-06-2013 02:18 AM
тАО11-06-2013 02:18 AM
POE problem on HP J9727A 2920-24G-PoE+ Switch
I have a stack consistent of two switches:
sw11# show stacking Stack ID : 01002c59-e512c640 MAC Address : 2c59e5-12c663 Stack Topology : Ring Stack Status : Active Uptime : 2d 23h 35m Software Version : WB.15.12.0010 Mbr ID Mac Address Model Pri Status --- ------------- -------------------------------------- --- --------------- 1 2c59e5-12c640 HP J9727A 2920-24G-PoE+ Switch 128 Standby 2 d4c9ef-aaa040 HP J9728A 2920-48G Switch 128 Commander sw11#
The problem is that the half of the ports doesn't delivering power via POE (detection status: disabled):
sw11# show power-over-ethernet brief Status and Counters - Port Power Status Member 1 Power Available: 370 W Used: 0 W Remaining: 370 W PoE | Power Power Alloc Alloc Actual Configured Detection Power Pre-std Port | Enable Priority By Power Power Type Status Class Detect ----- + ------ -------- ----- ----- ------ ----------- ----------- ----- ------ 1/1 | Yes high value 12 W 0.0 W Disabled 0 off 1/2 | Yes critical value 12 W 0.0 W Disabled 0 off 1/3 | Yes high value 12 W 0.0 W Disabled 0 off 1/4 | Yes high value 12 W 0.0 W Disabled 0 off 1/5 | Yes high value 12 W 0.0 W Disabled 0 off 1/6 | Yes high value 12 W 0.0 W Disabled 0 off 1/7 | Yes high value 12 W 0.0 W Disabled 0 off 1/8 | Yes high value 12 W 0.0 W Disabled 0 off 1/9 | Yes high value 12 W 0.0 W Disabled 0 off 1/10 | Yes high value 12 W 0.0 W Disabled 0 off 1/11 | Yes high value 12 W 0.0 W Disabled 0 off 1/12 | Yes high value 12 W 0.0 W Disabled 0 off 1/13 | Yes low value 12 W 0.0 W Searching 0 off 1/14 | Yes low value 12 W 0.0 W Searching 0 off 1/15 | Yes low value 12 W 0.0 W Searching 0 off 1/16 | Yes low value 12 W 0.0 W Searching 0 off 1/17 | Yes low value 12 W 0.0 W Searching 0 off 1/18 | Yes low value 12 W 0.0 W Searching 0 off 1/19 | Yes low value 12 W 0.0 W Searching 0 off 1/20 | Yes low value 12 W 0.0 W Searching 0 off 1/21 | Yes low value 12 W 0.0 W Searching 0 off 1/22 | Yes low value 12 W 0.0 W Searching 0 off 1/23 | Yes low value 12 W 0.0 W Searching 0 off 1/24 | Yes low value 12 W 0.0 W Searching 0 off
I can manually put disabled ports to "searching" by executing
sw11(config)# interface 1/1-1/24 power-over-ethernet
sw11(config)# reload
After that, PoE works fine on ports 1-12, but only for some time. On the next day ports 1-12 again "disabled". The question is: how to permanently turn on searching for poe devices on all ports?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-29-2014 11:04 AM
тАО07-29-2014 11:04 AM
Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
Are you saving the configuration after you changes?
So turn on POE on all ports.
interface (Iface list) power-over-ethernet
wri mem
reload
See if that retains the changes.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-20-2015 01:16 PM
тАО10-20-2015 01:16 PM
Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
I sure wish that people would actually reply back to let others know if suggestions to their problems worked...
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-22-2016 09:42 AM
тАО02-22-2016 09:42 AM
Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
Recieving same issue, expect PoE ports 2/1-2/12 will not enable. They stay in an Disabled State. Rebooting switch causes a temporary solution, then reverts. Running WB.15.17.0010 on an 3 2920 stack.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-25-2016 10:30 PM
тАО02-25-2016 10:30 PM
Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
Having quite the same problem and subscribing to the thread.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-26-2016 04:51 AM
тАО02-26-2016 04:51 AM
Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
You will need to log a call if there is an actual fault.
You may be able to see somethng useful with commands like this:
show logging -r -w
- w shows the Warning arlarms (do a ? to see other options). Example below has warnings as power cables were disconnected/reconnected.
W 02/20/16 19:42:06 00576 chassis: 50V Power Supply 1 is Faulted. Failures: 2 W 02/20/16 19:42:05 00071 chassis: Power Supply failure: Supply: 1, Failures: 2 W 02/20/16 19:35:17 00071 chassis: Power Supply OK: Supply: 1, Failures: 1 W 02/20/16 19:35:17 00576 chassis: 50V Power Supply 1 is OK. Failures: 1 W 02/20/16 19:35:11 00576 chassis: 50V Power Supply 1 is Faulted. Failures: 1 W 02/20/16 19:35:11 00071 chassis: Power Supply failure: Supply: 1, Failures: 1
Also
show power-over-ethernet brief show power-over-ethernet show run int 1/12
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО06-10-2016 07:44 PM
тАО06-10-2016 07:44 PM
Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
I was able to figure out that it wasn't the PoE issue that's causing the problem.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-24-2016 08:22 PM
тАО08-24-2016 08:22 PM
Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
Can you please tell us what was the issue. Even we are facing the same issue. Power-over-ethernet goes to disabled mode frequently. Have to enable PoE by running command "power-over-ethernet" on the disable ports. But this is a temporary solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-20-2017 05:55 PM
тАО02-20-2017 05:55 PM
Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
I found a possible solution to this problem that I'd like to share.
The following command allows the switch to calculate power draw on actual power usage instead of the reported LLDP value: no lldp config 1-24 dot3TlvEnable poe_config
This link is a very good writeup explaining the problem.
https://www.sourceonetechnology.com/insufficient-power-allocation-error-message-on-hp-switches/
I hope this helps
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-07-2017 05:40 AM
тАО04-07-2017 05:40 AM
Re: POE problem on HP J9727A 2920-24G-PoE+ Switch
"The following command allows the switch to calculate power draw on actual power usage instead of the reported LLDP value: no lldp config 1-24 dot3TlvEnable poe_config"This fixed a similiar issue that I started having on an 8212zl