Packet Sniffer

RouterOS Beginner Basics
1

Hello,

I have plugged a 60GB USB stick into the back of the Chateau LTE6 router and I am trying to run a packet sniffer continuously with memory scroll enabled. However, it automatically stops running at random moments, and it’s not the memory limit causing the issue. I have run the sniffer 5-6 times, and each time it stops when the file size reaches around 120MB to 130MB. Is there possibly a maximum runtime limit for the sniffer? I haven’t found anything regarding this in the MikroTik documentation.

Has anyone else experienced this issue before? Any help would be much appreciated.

2

No issue on LTE12.
Check file-limit config -

:put [/tool/sniffer get file-limit]

. Set to higher limit if is low, eg. 1GiB -

/tool/sniffer set file-limit=1G
3

Tried that this morning. Sniffer has stopped again at 140mb

4

Did you also set full file path in file-name? It must be filename with full path, not just filename, if is just filename .pcap file is created in files root which is on device memory for devices with flash drive.

5

Yes, I did. full path and /filename at the end.
As soon as I click ‘Start’ I can see that the file is being created in the correct location which is a USB stick.

I just cannot figure out what is causing the packet sniffer to stop running

6

Idk, if all is configured correct it should work. Chateau LTE6 is very similar to mine Chateau LTE12 and I cannot reproduce the issue, file was grown up to 250Mb on attached USB drive and I stopped sniffer…