2600-series POE Woes

[Preston Gallwas]

We weren't getting any power delivered to our POE Voip phones -- i telnetted in and checked the log and saw this:

W 10/25/05 15:03:19 ports: port 6 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 9 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 10 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 11 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 14 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 15 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 16 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 17 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 18 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 19 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 20 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 21 PD Other Fault indication.


W 10/25/05 15:03:19 ports: port 22 PD Other Fault indication.


I did a show tech, turned logging sensitivity to "highest", then we rebooted the switch, and this is what we see

I 10/25/05 15:19:13 ports: port 16 is now off-line


W 10/25/05 15:19:13 ports: port 16 PD Over Current indication.


I 10/25/05 15:19:19 ports: port 16 PD Detected.


I 10/25/05 15:19:19 ports: port 16 Applying Power to PD.


I 10/25/05 15:19:22 ports: port 16 is now on-line


I 10/25/05 15:20:10 ports: port 16 is now off-line


W 10/25/05 15:20:11 ports: port 16 PD Over Current indication.


I 10/25/05 15:20:16 ports: port 16 PD Detected.


I 10/25/05 15:20:16 ports: port 16 Applying Power to PD.


I 10/25/05 15:20:19 ports: port 16 is now on-line


W 10/25/05 15:20:20 ports: port 16 PD Over Current indication.

on one port.

I've attached the log of the first session. The first session has a show tech

[Preston Gallwas]

here is the log of the second session when port 16 had difficulty coming online

[SCOOTER]

Preston,

What Phones are connected? What Firmware are you running on the switch?

regards,

SCOOTER

[Preston Gallwas]

Mostly Avaya 4602 phones, with some 4606's

We're running 8.53 on all switches ta that location

[Manfred Arndt]

Hi Preston,

Please try upgrading your firmware to the H.08.72, which is available on the web. There have been a number of PoE related changes, including invalid PD signature related.

If you have a cable tester, it would be good to check the cable on port 16. It's possible that you have a bad connector, split pair, etc. that could be causing the excessive power draw. You could also try disconnecting port 16 for the moment.

It would be good to know if the the problem is isolated to one switch. Are your other 26xx-PWR switches working properly?

We have tested the 26xx-PWR with the Avaya 4606, 4612, and several other 802.3af compliant phones from several vendors and have not seen any issues.

Regards

[Preston Gallwas]

Yes, this is the only switch that has done this (so far) which is why it struck us as odd. We have a number of these poe switches at the same firmware level.
I'll try the upgrade, thanks

[Manfred Arndt]

Preston,

Was this switch running fine for some time and now has a problem? Has anything changed?

The Over Current Indication says that the port is trying to draw too much power. This "should" only happen with an bad PoE device or faulty cabling/connectors.

[Preston Gallwas]

Has run for over 11 months without a hitch. This is the first we've heard of it

[Manfred Arndt]

Is port 16 the only one still having problems? Or are none of the ports on this switch getting power?

[Preston Gallwas]

After a few reboots, port16 is the only one having trouble now. It took 2 reboots to get the rest of the switches to detect (that is, power cycling the switch)

I put in a support ticket with our infrastructure specialist to check out the cabling.