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Forum Discussion
M4300 24X: sudden restarts
Hi,
i have since months sudden restarts with a M4300-24X (Firmware 12.0.9.3) in a single router setup.
I use mostly LAGs with 2 ports for every system (Layer3+4 mode) and has disabled the most default enabled Layer 3 functions (only RIP receiving on 2 IP Interface are enabled ).
From the beginning the switch restarted between 2 and 6 weeks. There are no significant logs before or during the problem. The only message about the sudden restart is during booting:
<9> Jan 1 00:01:18 0.0.0.0-1 SIM[Cnfgr_Thread ]: sim_util.c(3927) 10 %% Switch was reset due to power disruption or unexpected restart.
It seems to me, that without all the default settings the switch is running more stable.
The Netgear support, which i've connected, hasn't helped me and had ignored my problem.
Has anybody similiar problems ? I've seen also a similiar case under M4300-24x: spontaneous reboots dispite latest firmware .
Best Regards,
Ralf
20 Replies
Hi,
i've updated today to firmware version 12.0.9.4. Maybe the mentioned bugfix
"Switches in a stack setup randomly reboot 1 to 2 times per month." helps in my single switch setup.
Because i don't see anything i can change in my simple setup, i think it must be a hardware problem or an instable firmware for a LACP-LAG setup.
Best Regards,
Ralf
Hi koralle
Thank you for your message and sorry for your issue. Yes, it is good that you have upgraded to latest 12.0.9.4 and it is possible that your issue gets fixed. M4300 is a stackable product line, standalone switches are part of a stack of "one unit" so please let us know how it goes. The M4300 series is our top of the line and no intempestive reboot should be observed even with the most complex configuration.
In the meantime, please send me by Private Message your case number (or ticket issue) with our Tech-Support, so that I can explore what happened and get back to you about it. Thank you for reporting the problem.
Of course if the problem reoccurs, we will collect the tech-support file out of the switch and get to a prompt resolution.
Regards,
Hi,
the switch has restarted after 2-3 days uptime after the reboot for the new firmware. The new firmware 12.0.9.4 has no positive effect.
The CPLD-Update from the Netgear Support has also no effect (no higher fan speed, which should be the result with this update). In my opinion was this CPLD-patch already included in the firmware (12.0.9.3) because the CPLD Version hasn't changed from 0x5.
Again no crash-log and only booting messages on the debug console with a cold start message.
I will try to replace this switch and hope that the next switch is more stable.
Best Regards,
Ralf
Hi,
again after 8 hours a spontaneous reboot. Crazy !
The Netgear Support is making trouble and requests a credit card number before sending a new switch.
Best Regards,
Ralf
i have the same issue in a Stack mode with 2 m4300-x24...
reboots after 10-15 days and 1 reboot after 18 hours.
This is not acceptable for an enterprise product.
Netgear fixes the bug !!!Hi wuebra ,
Could you please privode the tech support file to me? i will try re-created the issue and it will be helpful to find out the issue root cause .
How-do-I-send-diagnostic-files-from-my-Managed-Switch-to-NETGEAR-community-moderators
Thank you
kevin_hong wrote:Hi wuebra ,
Could you please privode the tech support file to me? i will try re-created the issue and it will be helpful to find out the issue root cause .
How-do-I-send-diagnostic-files-from-my-Managed-Switch-to-NETGEAR-community-moderators
Thank you
What kind of crap does support take off?
The support simply closed my case!
The switch restarted tonight. Syslog logs are available
Hi,
in my case there was a progress: Because of the unsolvable problem with the Netgear support to get a replacement switch we replaced only the power supply and immediately both fans (also the chassis fan!) have almost double speed. This is decreasing the sensor/chassis temperature from 65 °C to a constant level of 54-55 °C . It seems that the max. specified temperature of 81 °C is far too high and the switch is already starting to be instable at a level of 65 °C, especially if the temperature is constant at this level.
The chassis temperature in our setup is mainly depending of the number of connected ports. We have now 18 ports (16 ports with 1GbE and 2 with 10GbE) connected and will use 4 more ports (10GbE) in the next months. I hope that this will work with this switch and its "suboptimal" ventilation design for a Base T switch: the M4300-24X is too compact/dense with the half-width and one rear exhaust fan is not optimal/enough for this long chassis depth.
It seems after 11 days uptime that the instability of my switch was mainly (hopefully) caused by the faulty power supply related to the fan control.
But otherwise it could be worth to look carefully over the default configuration settings and disable the unnecessary functions to isolate the problem.
I hope for all customers of this M4300 switch series that also the "software" problems will soon be solved, because the release notes of the firmware updates and some threads in this community forum (it's a pitty that sometimes a conclusion is missing if the case was taken over from the Netgear support) are describing instability problems in various types during the last years.
Best Regards,
Ralf
Hi koralle
Thanks for your feedback.Please continue to see how it works, and if you encounter any questions, please feel free to ask
Thank you
- My temperatures at 3 units. I also think that these are way too high! The server room is at 19 degrees, but the switches don't get cooler. There are 2 U space above and below and the cabinets are completely cooled + MAC 65 ℃ (Unit1) 63 ℃ (Unit2) 43 ℃ (Unit3) Maximum operating temperature 81 ℃ (Unit1) 81 ℃ (Unit2) 83 ℃ (Unit3)
Dear wuebra,
as i see in your former comment, you have also unexpected restarts probably without significant log messages. Do the number of connected ports differ between your 3 units and cause the temperature differences ?
Do you see only restarts with unit 1 and 2, which have the higher temperatures, and no restart on unit 3 ?
From my experience my unit was instable at 65 "C and at the end before the power supply replacement only the additional connected serviceport caused restarts every day.
It's interesting for me, that another power supply has changed the fan control behaviour.
The Netgear support has also a CPLD patch, which should increase the fan speeds.
Can you give the output of "show environment" of your units.
Here is my situation with the replaced power supply:
Temperature Sensors: Unit Sensor Description Temp (C) State Max_Temp (C) ---- ------ ---------------- ---------- -------------- -------------- 1 1 MAC 53 Normal 81 Fans: Unit Fan Description Type Speed Duty level State ---- --- -------------- --------- ------------- ------------- -------------- 1 1 Fan-1 Fixed 5280 27% Operational 1 2 Fan-2 Fixed 4440 27% Operational
For now it is stable with this temperature between 53 and 55 "C.
Best Regards,
Ralf
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