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[Solved]: How do I fix wireless clients do not receive IP through DHCP from Bridged ssid

This document describes steps to troubleshoot if the clients are not getting IP address from bridged ssid.

Check if DHCP is enabled on the vlan interface that is configured as the bridge ssid.

Check if DHCP is enabled on the vlan interface that is configured as the bridge ssid.

If yes, Run the following sniffer command:

# diag sniffer packet <interfacename> 'port 67 or port 68' 4 0 l </interfacename>

If yes, Run the following sniffer command:  # diag sniffer packet <interfacename> 'port 67 or port 68' 4 0 l </interfacename>

In the above screen shot ‘Test1’ is the vlan interface name.

If there is no traffic seen, that means FortiGate is not receiving any discover packet from client.

If there is any switch in between, check if DHCP snooping is enabled on the switch.

If the switch is a FortiSwitch, try to add FortiGate interface as the trusted interfaces.

# config switch-controller managed-switch
edit <fortiswitch_serial_number> </fortiswitch_serial_number>
config ports
edit <port_name>
</port_name>
set dhcp-snooping {trusted | untrusted}
next
end
next
end

Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook

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