Sorry I don't understand how to interpret. Does it mean there's a problem with the router detecion method?
Main Ethernet (far left) is connected to ISP. Second connection is a 4g dongle. The setup is such that the 4g dongle (tether) is highest in priority.
Generally speaking, when our wan port network is abnormal, all data packets from the public network will not enter our wan port.
Can you use the tcpdump tool to capture the data packets on the eth2 port and send them to me?
@n0frills Command for that should be:
Please press return after each command.
opkg update
opkg install tcpdump
tcpdump -i eth2 -w debug.pcap
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Change the last command to this:
tcpdump -i eth2 -w debug.pcap
Note: The data packet contains some IP and mac information, it is best to send it to me via private message
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For situations where the ping detected packets are unavailable but other data packets are coming in, you can try turning on the low data mode.
It says failed to download. Probably because the router is still clinging to the wrong interface without internet connectivity. I have not manually switched yet
echo 3 > /proc/gl-kmwan/debug
logread -f |grep RX|grep eth2|grep -E '1.1.1.1|8.8.8.8|208.67.222.222|206.67.220.220'
Under normal circumstances, the terminal will not print any data.
I see, please re-issue the commad once again. I saw opkg update in the previous command and my little knowledge tells me update is a command in linux to download stuff?
opkg update only updates the software package list, opkg install tcpdump installs the tcpdump tool.
Does your terminal output any information after using these two commands? If not, please enter the following command:
arp
cat /proc/gl-kmwan/status
Otherwise, use the following set of commands:
opkg update
opkg install tcpdump
tcpdump -i eth2 -w debug.pcap
Wait about 30 seconds and press CTRL+C to end the packet capture.
Then use the ls command and you will see a debug.pcap file. Send this file to me.
I have run the command, however, where can I find the output debug.pcap file?
You will need to download the file using WinSCP, Cyberduck or any other SFTP software.
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I'm at my wits end lol. I have downloaded WinSCP however unlike putty it asks for username lol...access denied. Isn't there a simpler way to do this?
Please note that I'm noob, I don't understand much of networking
Thanks for the elaborate image, I have managed to log in and run the requested commands. However, I'm still at my first problem...where is the pcap file? how is it captured by Winscp? where is it stored so that I can share?
Anyways, I believe the problem is with the router. If I disconnect the tether and reconnect it, it not detects that internet cannot be accessed. Why wasn't it able to detect this hours ago?
After running tcpdump -i eth2 -w debug.pcap the file /root/debug.pcap will be created.