Hi all, I am just wondering if anyone has experienced ethernet port drops on e4k, 400c and 4600c? I have had multiple 400c and one 4600c lose connection and our Tik router notifies us of the interface is down. We are only losing internet connection so its just the data side of the connection not the power side. Every time it happens maestro reports a reset online time and the uptime is not. We ran fiber to said devices and problem solved but still curious why this has been happening and on multiple e4k units and if anyone else has experienced it?
I have 23 APs mostly 4600 and a few 4500/4500L all connected with 1G ethernet and have not had this at all on mine. Most are connected to Netonix Poe Switches.
Thank you for your reply… anything in between? Surge Suppressors? One common denominator for me is that I have cambium surge suppressors at these said sites.
I do not have any surge suppressors. All direct connect to grounded switches.
We had link issues with the 56V Cambium surge suppressors as soon as we started using them a few years ago and switched to using Mimosa SS (https://www2.mimosa.co/mimosa-nid-datasheet).
Thank you for your reply. Interesting, I may do some experimenting
The provided spec sheet does not have a part number, so what I found could be a different product and this sheet is a bit confusing as to it normal operating range. When I looked them up on my vendor website, It looks like the are rated for 20v@1amp so a 48v AP running at 1/3amp is likely going to fail on these. So the 48v/56v 45xx/46xx likely is not a good candidate. 30v 3xx series SM’s should be fine.
When you say these, are you referring to the Miimosa surge suppressor?
Yeah, I will edit the original post to reflect that.
I suppose I could try to be helpful here… This is what we use for our tower sites that then go to netonix switches. There are fuses because of the Netonix being grounded and having its own suppressor that will clamp all the lines = blown ports.
Here is their surge suppressors https://www.mccowntech.com/product-category/rack-mount-surge-fuse-and-dc-protection-products/
Then we put them in these.
Now we run a bunch of different platforms with different requirements so we found the flexibility of this platform to work well for us.
On the customer side we are using the cambium 56v surge suppressors.
We currently have 406 4600, 4600L, 4625 and 4616 units on the air.
We’ve had 0 problems with ethernet ports on any of this equipment, except for where we’ve been using 10 Gbps SFP+ modules with CAT6A ethernet cable to get higher bandwidth up to the APs.
On the ground, we’re using the POEs that come with the Cambium APs and MikroTik CRS309-1G-8S+ switches.
On one of the APs in partcular, we kept having ethernet data stop (with link still showing) or dropped links in some cases. We replaced everything - SFP+ modules, 4625, CRS309, POE and even the CAT6A run. We still had the problem. One thing that we noticed was that the 10 Gbps SFP+ modules in the CRS309 were running VERY hot (too hot to touch for more than about 2 seconds). The manufacturer told us that this was normal. That goes against everything that I’ve known about electronics for the past 50+ years.
We put a small fan on the equipment rack to blow some air over the SFP+ modules. They cooled down within a few minutes. So far, we haven’t had any ethernet drops on that AP since doing this.
The MikroTik switches and routers have temperature monitor in them to shut off an SFP/SFP+ port if the temperature of the modules gets too high. We think that this was causing the problem.
Of course, final solution is that we’re going to run fiber up the water tank to the AP, so there won’t be any heat generated in the SFP+ modules.
On the ethernet lines to/from the APs, we do use surge protectors, but I don’t remember the brand. My father takes care of that part of the system.