Protecting 1Gb Ethernet From Lightning Strikes

Tue Aug 13 21:55:06 UTC 2019

The university I worked at used ITW Linx surge arrestors for years, never had any issues.

https://www.itwlinx.com/products/surgegate-modular-communications-surge-protectors/cat6-75z

The model above will work with POE+, careful of their cheaper CAT5-POE and CAT6-POE models as they are not designed for POE+ and did not work well with Cisco POE.

Never had issues with the CAT6-75 model, worked perfect with Cisco equipment.

We also used the CAT6-LAN models where POE was not needed, as they clamp to 16v vs the 75v of the CAT6-75 model.

Thank you,

Kevin McCormick

From: NANOG <nanog-bounces at nanog.org> On Behalf Of Javier J
Sent: Tuesday, August 13, 2019 1:22 PM
To: nanog at nanog.org
Subject: Protecting 1Gb Ethernet From Lightning Strikes

I'm working with a client site that has been hit twice, very close by lightening.

I did lots of electrical work/upgrades/grounding but now I want to focus on protecting Ethernet connections between core switching/other devices that can't be migrated to fiber optic.

I was looking for surge protection devices for Ethernet but have never shopped for anything like this before. Was wondering if anyone has deployed a solution?
They don't have a large presence on site (I have been moving all of their core stuff to AWS) but they still have core networking / connectivity and PoE cameras / APs around the property.
Since migrating their onsite servers/infra to the cloud, now their connectivity is even more important.

This is a small site, maybe about 200 switch ports, but I would only need to protect maybe 12 core ones. but would be something I could use in the future with larger deployments.
it's just a 1Gbe network BTW.

Hope someone with more experience can help make hardware recommendations?

Thanks in advance.

- Javier
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