PoE Port with nothing plugged in reports power use

[tobias]

Hi Chris & Team,

We have 7 or 8 of your WS-8-150-DC switches running in our lab. For testing we set each one up on 24V PoEs which we had around (modified network cable going the switch's DC input, using the PoE purely as a power supply).

Switch config is pretty much default with 24V configured on ports 2-6 (happy to supply a copy of the config file if it helps).

On each switch we have a small DVR connected on port 3 and between 1 and 3 Ubitquiti cameras connected on other ports. Port 1 on each switch is uplink with no PoE.
All of the PoE devices usually draw significantly less than 10W each.

On 3 of the switches we can see a single port drawing a lot of power (over 30W) with nothing plugged into that port.
Attached some screenshots to clarify what I mean.
Also below the log from one of the switches.

We do not want to deploy those devices while we are not sure what is going on.

Any input appreciated.

Many thanks in advance for your help

Tobias

Code: Select all

 
Dec 31 19:00:05 sysinit: killall: udhcpc: no process killed
Dec 31 19:00:07 kernel: vtss_core: module license '(c) Vitesse Semiconductor Inc.' taints kernel.
Dec 31 19:00:07 kernel: switch: 'Luton26' board detected
Dec 31 19:00:09 kernel: vtss_port: Loaded port module on board Luton26, type 5
Dec 31 19:00:10 kernel: nf_conntrack version 0.5.0 (2048 buckets, 8192 max)
Dec 31 19:00:10 kernel: i2c /dev entries driver
Dec 31 19:00:10 system: Setting MAC address from flash configuration: EC:13:B2:E2:3F:B0
Dec 31 19:00:10 kernel: i2c_vcoreiii i2c_vcoreiii: i2c bus driver on IRQ 19
Dec 31 19:00:11 sysinit: Loading defaults
Dec 31 19:00:12 sysinit: Adding custom chains
Dec 31 19:00:12 sysinit: Loading zones
Dec 31 19:00:12 sysinit: Loading forwarding
Dec 31 19:00:12 sysinit: Loading redirects
Dec 31 19:00:12 sysinit: Loading rules
Dec 31 19:00:12 sysinit: Loading includes
Dec 31 19:00:13 admin: adding lan (eth0) to firewall zone lan
Dec 31 19:00:13 dropbear[631]: Running in background
Dec 31 19:00:14 netonix: 1.5.5 on WS-8-150-DC
Dec 31 19:00:17 UI: web config OK
Dec 31 19:00:17 syslogd exiting
Dec 31 19:00:18 syslogd started: BusyBox v1.19.4
Dec 31 19:00:24 STP: msti 0 set port 1 to discarding
Dec 31 19:00:24 sysinit: 1969-12-31 19:00:23: (network.c.272) warning: please use server.use-ipv6 only for hostnames, not without server.bind / empty address; your config will break if the kernel default for IPV6_V6ONLY changes
Dec 31 19:00:24 sysinit: 1969-12-31 19:00:23: (network.c.272) warning: please use server.use-ipv6 only for hostnames, not without server.bind / empty address; your config will break if the kernel default for IPV6_V6ONLY changes
Dec 31 19:00:24 sysinit: 1969-12-31 19:00:23: (log.c.216) server started
Dec 31 19:00:24 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 19:00:24 STP: msti 0 set port 1 to learning
Dec 31 19:00:24 STP: msti 0 set port 1 to forwarding
Dec 31 19:00:27 switch[770]: Detected cold boot
Dec 31 19:00:28 switch[770]: Port 2: Input Voltage too low for 24V operation (0.0V), not enabling PoE
Dec 31 19:00:28 switch[770]: Port 3: Input Voltage too low for 24V operation (0.0V), not enabling PoE
Dec 31 19:00:28 switch[770]: Port 4: Input Voltage too low for 24V operation (0.0V), not enabling PoE
Dec 31 19:00:28 switch[770]: Port 5: Input Voltage too low for 24V operation (0.0V), not enabling PoE
Dec 31 19:00:28 switch[770]: Port 6: Input Voltage too low for 24V operation (0.0V), not enabling PoE
Dec 31 19:00:29 switch[770]: PoE enabled on port 2, PoE Smart is starting cable check
Dec 31 19:00:29 switch[770]: PoE enabled on port 3, PoE Smart is starting cable check
Dec 31 19:00:29 switch[770]: PoE enabled on port 4, PoE Smart is starting cable check
Dec 31 19:00:29 switch[770]: PoE enabled on port 5, PoE Smart is starting cable check
Dec 31 19:00:29 switch[770]: PoE enabled on port 6, PoE Smart is starting cable check
Dec 31 19:00:29 switch[768]: temp sensor version 1
Dec 31 19:00:29 switch[770]: Port 2: Input Voltage is now high enough for 24V operation (48.6V), enabling PoE
Dec 31 19:00:29 switch[770]: Port 3: Input Voltage is now high enough for 24V operation (48.6V), enabling PoE
Dec 31 19:00:29 switch[770]: Port 4: Input Voltage is now high enough for 24V operation (48.6V), enabling PoE
Dec 31 19:00:29 switch[770]: Port 5: Input Voltage is now high enough for 24V operation (48.6V), enabling PoE
Dec 31 19:00:29 switch[770]: Port 6: Input Voltage is now high enough for 24V operation (48.6V), enabling PoE
Dec 31 19:00:33 switch[770]: Port 2 cable check results: Open, Open, Open, Open
Dec 31 19:00:33 switch[770]: Port 2 passed PoE Smart cable check, turning on power
Dec 31 19:00:33 switch[770]: Port 3 cable check results: Open, Open, Short, Short
Dec 31 19:00:33 switch[770]: Port 3 passed PoE Smart cable check, turning on power
Dec 31 19:00:33 switch[770]: Port 5 cable check results: Open, Open, Open, Open
Dec 31 19:00:33 switch[770]: Port 5 passed PoE Smart cable check, turning on power
Dec 31 19:00:33 switch[770]: Port 6 cable check results: Open, Open, Open, Open
Dec 31 19:00:33 switch[770]: Port 6 passed PoE Smart cable check, turning on power
Dec 31 19:00:34 switch[770]: Port 4 cable check results: Ok, Ok, Short, Short
Dec 31 19:00:34 switch[770]: Port 4 passed PoE Smart cable check, turning on power
Dec 31 19:00:42 Port: link state changed to 'up' (100M-F) on port 3
Dec 31 19:00:42 STP: msti 0 set port 3 to discarding
Dec 31 19:00:45 STP: msti 0 set port 3 to learning
Dec 31 19:00:45 STP: msti 0 set port 3 to forwarding
Dec 31 19:00:47 Port: link state changed to 'up' (100M-F) on port 4
Dec 31 19:00:47 STP: msti 0 set port 4 to discarding
Dec 31 19:00:50 STP: msti 0 set port 4 to learning
Dec 31 19:00:50 STP: msti 0 set port 4 to forwarding
Dec 31 19:01:30 Port: link state changed to 'down' on port 1
Dec 31 19:01:30 STP: msti 0 set port 1 to discarding
Dec 31 19:03:05 monitor: restarting vtss_appl
Dec 31 19:03:05 STP: msti 0 set port 3 to discarding
Dec 31 19:03:05 STP: msti 0 set port 4 to discarding
Dec 31 19:03:08 STP: msti 0 set port 4 to learning
Dec 31 19:03:08 STP: msti 0 set port 4 to forwarding
Dec 31 19:03:08 STP: msti 0 set port 3 to learning
Dec 31 19:03:08 STP: msti 0 set port 3 to forwarding
Dec 31 19:19:45 Port: link state changed to 'up' (1G) on port 1
Dec 31 19:19:45 STP: msti 0 set port 1 to discarding
Dec 31 19:19:45 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 19:19:45 STP: msti 0 set port 1 to learning
Dec 31 19:19:45 STP: msti 0 set port 1 to forwarding
Dec 31 19:20:24 STP: msti 0 set port 1 to discarding
Dec 31 19:20:24 STP: msti 0 set port 1 to learning
Dec 31 19:20:24 STP: msti 0 set port 1 to forwarding
Dec 31 19:20:30 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 19:21:43 monitor: restarting vtss_appl
Dec 31 19:21:44 STP: msti 0 set port 1 to discarding
Dec 31 19:21:44 STP: msti 0 set port 3 to discarding
Dec 31 19:21:44 STP: msti 0 set port 4 to discarding
Dec 31 19:21:45 Port: link state changed to 'down' on port 1
Dec 31 19:21:45 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 19:21:45 STP: msti 0 set port 1 to learning
Dec 31 19:21:45 STP: msti 0 set port 1 to forwarding
Dec 31 19:21:45 STP: msti 0 set port 1 to discarding
Dec 31 19:21:47 STP: msti 0 set port 4 to learning
Dec 31 19:21:47 STP: msti 0 set port 4 to forwarding
Dec 31 19:21:47 STP: msti 0 set port 3 to learning
Dec 31 19:21:47 STP: msti 0 set port 3 to forwarding
Dec 31 19:27:05 Port: link state changed to 'up' (1G) on port 1
Dec 31 19:27:05 STP: msti 0 set port 1 to discarding
Dec 31 19:27:05 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 19:27:05 STP: msti 0 set port 1 to learning
Dec 31 19:27:05 STP: msti 0 set port 1 to forwarding
Dec 31 19:44:05 monitor: restarting vtss_appl
Dec 31 19:44:06 STP: msti 0 set port 1 to discarding
Dec 31 19:44:06 STP: msti 0 set port 3 to discarding
Dec 31 19:44:06 STP: msti 0 set port 4 to discarding
Dec 31 19:44:06 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 19:44:06 STP: msti 0 set port 1 to learning
Dec 31 19:44:06 STP: msti 0 set port 1 to forwarding
Dec 31 19:44:09 STP: msti 0 set port 4 to learning
Dec 31 19:44:09 STP: msti 0 set port 4 to forwarding
Dec 31 19:44:09 STP: msti 0 set port 3 to learning
Dec 31 19:44:09 STP: msti 0 set port 3 to forwarding
Dec 31 19:48:14 UI: Port 2 bounced by admin (::ffff:172.20.0.1)
Dec 31 19:48:15 switch[770]: Port 2 Link: changed from poe override
Dec 31 19:58:57 STP: msti 0 set port 1 to discarding
Dec 31 19:58:57 STP: msti 0 set port 1 to learning
Dec 31 19:58:57 STP: msti 0 set port 1 to forwarding
Dec 31 19:58:57 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 20:00:53 STP: msti 0 set port 1 to discarding
Dec 31 20:00:53 STP: msti 0 set port 1 to learning
Dec 31 20:00:53 STP: msti 0 set port 1 to forwarding
Dec 31 20:00:55 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 20:04:56 STP: msti 0 set port 1 to discarding
Dec 31 20:04:56 STP: msti 0 set port 1 to learning
Dec 31 20:04:56 STP: msti 0 set port 1 to forwarding
Dec 31 20:05:03 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 20:06:26 monitor: restarting vtss_appl
Dec 31 20:06:26 STP: msti 0 set port 1 to discarding
Dec 31 20:06:26 STP: msti 0 set port 3 to discarding
Dec 31 20:06:26 STP: msti 0 set port 4 to discarding
Dec 31 20:06:27 STP: MSTI0: New root on port 1, root path cost is 40000, root bridge id is 32768.EC-13-B2-E2-1C-80
Dec 31 20:06:27 STP: msti 0 set port 1 to learning
Dec 31 20:06:27 STP: msti 0 set port 1 to forwarding
Dec 31 20:06:29 STP: msti 0 set port 4 to learning
Dec 31 20:06:29 STP: msti 0 set port 4 to forwarding
Dec 31 20:06:29 STP: msti 0 set port 3 to learning
Dec 31 20:06:29 STP: msti 0 set port 3 to forwarding


[mnitech]

Your screen shot of the status page shows an input voltage of 23.7 volts and a current of .86 amps. That is around 20.4 watts so the reading on the port is obviously incorrect. First place I would look is checking the grounds and looking for a ground loop.

[tobias]

Hi and many thanks for the suggestion mnitech.
Sorry if this question seems plain dumb, I'm not so much an electronics person.
My setup here uses a separate power supply (240v AC to 24v DC converter) for each Netonix switch.
Where would I have to go looking for the ground loop - between the power supply and the Netonix switch or on our mains line?
There is not much of a circuit between the PS and switch, it is wired straight in and nothing that looks odd.
The mains line seems a bit "out of reach" for me, I would have to assume everything there is about as fine as it can be especially since only some of the switches here show that issue?
Would be great if you could clarify or have other ideas.
Thanks again
Tobias

[jorgenekah]

I have exactly the same issue in 5 netonix switches, some ports are now showing 39watts, how can that be? can someone from netonix help us to fix this issue? tks