Normal Temperatures for XS1930-10

MagellanTX

Hello, are these normal temperatures for a XS1930-10? The bottom of the switch is so hot (just inside the boundaries of the label), you cannot touch it; measuring 49.4C. The fan is working and the air it's exhausting isn't all that warm, nor is the rest of the chassis.

The CPU sits around 5% so it's not working very hard. It's a brand new switch, about a week old.

Thank you!

Zyxel_Melen

Hi @MagellanTX

May I know some details about your environment?

1. Where did you place this switch?
2. Could you measure the room temperature and share it with us?
3. How did you place the switch? Could you take some photos and share with us? I need the front photo so I can know how many devices you connect now and their link speed
4. Did you use the copper transceiver?

MagellanTX

Hello,

1. The switch is mounted underneath my desk, and has ventilation on all sides.
2. The room temperature is always 24C/76F.
3. Photo is attached. There is x1-2.5Gbps link, x3-1Gbps link, x1-10Gbps link
4. No copper SFP, but I do use a MM/SR SFP. The SFP itself isn't very hot.

This switch connects to an upstream 1930-12 and that switch doesn't run hot at all. On the 1930-10, I can feel the fan blowing on the left side and the air it's exhausting isn't hot. It's only a particular area on the underside that is hot, the rest of the bottom (and the rest of the chassis) is fine. My guess is that something inside is using the chassis as a heat sink….or some component is working too hard.

This switch is used as a simple access switch; there is no L3 configured. Honestly, the traffic is fairly light. Strangely, I do see the CPU jumping to 90% frequently and then dropping back to 5% so I'm starting to wonder if there is something wrong with my config. I know things like a misconfigured spanning tree would drive the switch pretty hard, but unfortunately, I don't know enough on these devices to collect the STP logs. However, I do use RSTP and it is configured (I'm assuming correctly) on both sides.

I can send the tech support files if you need those.

This is the general area where it's excessively hot and only this area along the bottom of the label. The rest of the bottom feels normal.

MagellanTX

I'm not sure if this makes a difference, but it looks like the CPU is doing something. Unfortunately, I can't see (don't know the command) to look at what processes are consuming it.

CPU usage status:  40.97%
baseline 9005633 ticks

sec   ticks   util sec   ticks   util sec   ticks   util sec   ticks   util
 0 3689941  40.97   1  955294  10.60   2 3342056  37.11   3 3636702  40.38
 4 3188580  35.40   5  942585  10.46   6 3890487  43.20   7 4033672  44.79
 8 2365715  26.26   9 1954689  21.70  10 3652011  40.55  11 3565507  39.59
12 1274307  14.15  13 2831979  31.44  14 3550393  39.42  15 3551676  39.43
16  614138   6.81  17 3488544  38.73  18 3549333  39.41  19 2954975  32.81
20 1129290  12.53  21 3566831  39.60  22 3637312  40.38  23 2041361  22.66
24 1981444  22.00  25 3659162  40.63  26 3556031  39.48  27 1263627  14.03
28 2875399  31.92  29 3577133  39.72  30 3545572  39.37  31  576561   6.40
32 3521594  39.10  33 3584161  39.79  34 2906088  32.26  35 1183519  13.14
36 3557705  39.50  37 3720833  41.31  38 1980561  21.99  39 2022038  22.45
40 3651060  40.54  41 3558212  39.51  42 1224953  13.60  43 2909701  32.30
44 3554981  39.47  45 3553008  39.45  46  543493   6.03  47 3557290  39.50
48 3552451  39.44  49 2880282  31.98  50 1210213  13.43  51 3563183  39.56
52 3643600  40.45  53 1931064  21.44  54 2083958  23.14  55 3662666  40.67
56 3545246  39.36  57 1370885  15.22  58 2964381  32.91  59 3576179  39.71
60 3488756  38.73  61  600754   6.67  62 3554604  39.47

Zyxel_Melen

Hi @MagellanTX

Thanks for the update.

First, the device's temperature is still normal since it doesn't go over the threshold. However, the fan speed seems lower than expect. Could you help to upgrade your firmware to the latest version? Because my lab XS1930 with 4.80 patch 4 have higher FAN speed (around 6200 RPM) and the lower temperature.

MagellanTX

I did upgrade, but the fan speed is still ~2000 RPM. In your lab switch, does it get very hot on the underside near the corner the label (closest to the SFP)? Mine is so hot, you cannot touch it for more than a second. However, mine is also ~20C hotter than yours.

PeterUK

Fan speed seems to be auto my XS1930-10 runs hot but then the way its in my rack is FLEX200 then XS1930-10 no space and above that patch panel

Here is just coming up to 400 days uptime

MagellanTX

Thank you Peter! Does your switch get extremely hot (like untouchable hot) on the underside near the corner of the label?

Also, your fan is running faster than mine too so I'm starting to wonder if I have a fan issue. The fan itself is working and I can feel it exhausting air (which isn't very hot) but it also makes a loud vibration noise. If it's just a 40mm fan, I might replace it.

PeterUK

Due to it being in a rack and the FLEX 200 under it which adds heats to the switch I can't tell if it too hot but likely is the model could of done with another fan.

If the switch is new best to send it back for Zyxel to look at it is odd your fan is not ramping up and a new fan might not fix it depending on how the fan is controlled.

Zyxel_Melen

https://community.zyxel.com/en/discussion/comment/81005#Comment_81005

Hi @MagellanTX

Could you help share the tech support? It seems like it is related to the SFP model. The XS1930-10 in my lab do not use a SFP model to link other device.

MagellanTX

I have PM'd you the tech support; hopefully it will shed some light on the issue.

I migrated my trunk from the SFP to a copper port (port 8) and have removed the SFP from the switch. I will let it run like this for the day to see if it makes any difference, but the SFP was not hot at all.

The SFP I use is: 10GTEK 10GBase-SR SFP+. It's the same I use on my 1930-12 and that switch is running fine.

Thank you for looking!