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Forum Discussion
Random Link Loss on ALL GS108Tv3 Switches
NOTE: GS108Tv3 is not in the Model dropdown list; good going, guys...
I have deployed almost a dozen GS108T switches for a client. Of the (2) v3 units so far, both suffer from random loss of link on whatever port is the uplink from another switch. I am about to deploy a dozen more of these, but this issue is a deal-breaker.
- The uplink source switch currently would be a GS108Tv2, a GS724Tv4, or a GS752TPv2; it occurs when connected to any of these.
- This occurs whether the v3 unit is being powered via PoE on Port 1 or is powered via the AC adapter.
- This occurs with that uplink cable in any of the 8 ports.
- Both switches are running the current 7.0.7.2 firmware.
- All devices are on UPS, of course.
I find no rhyme or reason for this sudden loss of link, except that I can make it happen manually by simply moving the patch cables for local devices (phone, PC, WiFI AP) around from port to port. If I move a live Ethernet cable from any port to another port several times, the uplinked port will completely lose link ("lights out"). All other ports continue operating as normal, but the switch is unreachable from the rest of the network until it is power-cycled.
What's going here?
14 Replies
Welcome to the community! :)
As far as I have checked, there is no issue logged for the GS108Tv3 as per described in your initial post. Was everything working fine before?
Kindly try to perform a factory reset on your GS108Tv3 switches and reconfigure the settings from scratch. Then observe if the same problem will occur.
Regards,
DaneA
NETGEAR Community Team
There was no "before", this has been an issue since we began receiving v3 switches instead of v2 units. Since I am not onsite daily, it took us a couple of weeks to determine what was happening. These switches have been reset/reconfigured many times with no change/improvement. I also confirmed the same issue when the units are uplinked through fiber adapters as well as other Netgear switches.
The issue has significantly lessened under firmware 7.0.7.2, all units stayed up for more than 24 hours in the last 2 days. I see (1) of these offline again now, the facilities manager is going to take a look at it for me now. I will advise.
The facilties manager just confirmed the same issue on an updated v3 switch. He found the unit with no link light/connectivity on the uplink port (port 2). Moving that Ethernet to any other port obtained link. Replacing it back in port 2, no link lights unless the unit is power cycled. This unit is on 7.0.7.2. All units are on UPS, of course. If you have log I can pull, etc. I am happy to do so, but to this point all v3 units have done this repeatedly regardless of where they are on campus.
Hi cgoodwin73, I recently installed two GS108Pv3 and have had the exact issue you've descripted in this post. I haven't found the trigger on my network but, once the light goes out on my uplink port, I have to power cycle to get my uplink connected again.
I see this thread is a few years old now but was wondering if you ever found a solution.
Thanks!
Hi Brian,
It appeared that my ATT modem was dying so I can't say for sure what it was or wasn't sending to my primary GS108. Each time the modem rebooted itself it would kill the uplink port to my first GS108 that feeds the house. When I manually rebooted the primary GS108 to get the uplink working again it would break the uplink to the second GS108 that is the switch for my studio setup (PC, Dante, and AES67 hardware).
I guess the question is, even if the modem was doing something suspect at the point of failure causing my primary GS108 to protect itself by turning off that upload port, why would rebooting my primary switch cause my second studio switch to shut off?
Either way, power cycling both fixes the problem each time but was a pain. I am no network expert and these GS108Pv3 far exceed my network knowledge so I was hoping it was just a setting or something.
Disable Loop Protection.
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