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Forum Discussion
GS316EP Traffic Management problem - Switch limits throughput after a time automatically
Hi community,
my configuration is built of 2x GS316EP switches connected together using port 1.
One switch is placed in the cellar, one switch is placed in a room on the 1st floor.
The distance is approx 25m (cabling distance).
During normal operations the throughput is as expected, but after about 2 weeks the switch on the first floor limits the throughput automatically to approx. 10% of the throughput before.
QoS settings are port based with Broadcast filtering enabled.
Rate / Storm control is set to no limit.
Priority control is not in use, all ports have the same priority (medium).
The switches are both on the latest firmware version 1.0.3.7.
There are no CRC errors and all other diagnostic tests show that ports are OK and there is no loop.
I assume it is the switch on the first floor, because when I reboot this switch the throughput si back, but when I reboot the switch in the cellar nothing changes.
I have searched the documentation and the internet as well as the Netgear community site, but I have not found any information how to remediate this problem.
Anybody any idea?
many thanks
mic
12 Replies
Hello Mic,
The only thing coming into my mind is that the link between the two switches (or the link to the device you testing the speed with!) does re-renegotiate and fall back to Fast Ethernet, actively using just to of the four wire pairs.
System -> Management -> Port Status ... Linked Speed
Regards,
-Kurt
Good catch ...
Isolating the problem is always agood idea and something I try first.
I have already tried some troubleshooting, but I have not posted what I have tried - sorry for that, maybe I should have posted my troubleshooting steps with the first post.
I tried to keep a long story short otherwise the post would have been a very long letter.
I have two Laptops for "mobile" troubleshooting, that I can use.
One is a Mac the other one is Windows 10 based.
Both have Gigabit Ethernet.
Before the switch on the first floor turned out to be the problem bear, I tried the following:
1. Tried to do performance tests (both Laptops) with 2m cables with the switch located in the cellar
> full throughput
2. Tried the same with the switch on the 1st floor
> limited throughput
I tried different cables to rule out a faulty cable.
3. Reboot the cellar switch and re-test the switch on the first floor (Perf Test Number 2)
> nothing changed
4. Reboot the switch on the first floor and re-test the switch on the first floor (Perf Test Number 2)
> full throughput
I then tried to find a setting on the switch on the 1st floor that could trigger the behavior.
Since I couldn't find anything, I asked in the forum (initial post).thx
mic
I'll have a look and see what happens if the problem occurs again.
At the moment it is still running at full throughput.many thx
mic
Hi micliner,
My apologies as this model can't generate logs. Anyway, this is only being experienced on the switch from the first floor and not on the one from the cellar, right? Have you considered switching them to see if the same behavior is being experienced? I don't think there is something wrong with the switches though as the problem only happens every two weeks.
Kind regards,
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