There is a hEX PoE router (RB960PGS). Recently, for some unknown reason, the device began to hang and restart itself. This happens with an enviable regularity, approximately every 21-22 hours.
The following symptoms stop working at once in the Internet (two providers are connected, both have DHCP connections). At the same time, IPTV works normally, it works through the port in bridge mode with the provider’s port, from outside the site is accessible through the thrown ports 80 and 443. The access to the router via the web interface and via winbox will be lost from the inside. After some time, the watchdog timer seems to work and the device restarts. And so until the next problem. There is nothing in the logs, as if nothing happened.
If necessary, to have a full PoE replaced the power supply for 48POW, but this did not change the situation, i.e. there was a problem in the block of pianism.
What to do? Where to look? Back in the store, bought something recently?
New tests revealed a possible problem. In the logs there is really nothing, I even tried to write to external usb.
But at the moment before rebooting I stumbled upon the braking interface. Of course it’s useful to watch the download and found the download of the CPU in 100%. Of processes, the lion’s share of the processor was taken by the process “spi”. Tell me what kind of process is it, what is it responsible for?
spi = serial peripheral interface OR stateful packet inspection, someone clarify it please!
also…
check you dont have 53 dns port open to the world.
http://forum.mikrotik.com/t/how-to-block-a-dns-request-from-the-outside-world/63404/1
check your power supply
netinstall firmware
No, spi is Serial Peripheral Interface it is the bus used to communicate between the SoC (system on a chip) and the additional peripherals
including the Flash memory.