[126370] in North American Network Operators' Group
POE switches and lightning
daemon@ATHENA.MIT.EDU (Caleb Tennis)
Thu May 13 11:37:24 2010
From: Caleb Tennis <caleb.tennis@gmail.com>
Date: Thu, 13 May 2010 11:36:35 -0400
To: North American Network Operators Group <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
We had a lightning strike nearby yesterday that looks to have come =
inside our facility via a feeder circuit that goes outdoors underground =
to our facility's gate. =20
What's interesting is that various POE switches throughout the entire =
building seemed to be affected in that some of their ports they just =
shut down/off. Rebooting these switches brought everything back to =
life. It didn't impact anything non-POE, and even then, only impacted =
some devices. But it was spread across the whole building, across =
multiple switches.
I was just curious if anyone had seen anything similar to this before? =
Our incoming electrical power has surge suppression, and the power to =
the switches is all through double conversion UPS, so I'm not quite sure =
why any of them would have been impacted at all. I'm guessing that the =
strike had some impact on the electrical ground, but I don't know what =
we can do to prevent future strikes from causing the same issues. =
Thoughts?
