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Wifi Module Mt7628/Mt7688 Troubleshoot The Problem That DHCP Cannot Obtain IP Addresses

一. Troubleshooting the Problem that DHCP Cannot Obtain an IP

  1. Connect to the WIFI hotspot of SKW92B and log in to the management terminal through the telnet protocol

The following is the configuration of putty's telnet protocol:

  1. After logging in to the terminal, use ps to view the process number of the dhcp client, and use kill to kill the process;

The following commands are: ps and kill -9 1126

3. Manually start the udhcpc process and check the process of SKW92B acquiring IP addresses;

The following DHCP acquisition is abnormal

udhcpc -i eth2.2 -s /sbin/udhcpc.sh -p /var/run/udhcpc.pid

NAK message: The server rejects the DHCP REQUEST message from the client. For example, the IP address assigned by the server to the client has exceeded the lease period (the server cannot find the corresponding lease record) or the IP address cannot be assigned normally due to some reasons. address, a DHCP NAK message is sent as a response (the client moved to a new network). Notifies the DHCP client that a suitable IP address could not be assigned. The DHCP client needs to resend the DHCP DISCOVERY message to apply for a new IP address.

The normal way to obtain a DHCP address is as follows:

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