DHCP not working on VLAN

Forum|Forum|6 years ago
May 13, 2020
2 replies
6334 views

Hello,

We are using fortiGate 60F v6.0.6. Recently we created a new Hardware Switch interface with 2 of the LAN ports as members

The role is LAN and the IP/Netmask is 0.0.0.0/0.0.0.0.

Under this hardware switch interface, we have created a VLAN, role as LAN and the IP/Netmask is 10.21.14.1/255.255.255.0

DHCP server is enable in VLAN.

Same VLAN is created in a manageable switch is tagged to the firewall VLAN. When a laptop is connected to the VLAN ports in the Switch laptop is not getting IP addess from the VLAN pool from Firewall.

See the interfaces in the firewall

Role IP/Netmask

Hardware Switch 0.0.0.0/0.0.0.0

VLAN 10.21.14.1/255.255.255.0

Firewall DHCP logs using diag sniff packet any "port 67 or port 68" 4

1264.792359 vlan in 0.0.0.0.68 -> 255.255.255.255.67: udp 300 1265.816635 vlan in 0.0.0.0.68 -> 255.255.255.255.67: udp 316 1397.432855 vlan in 0.0.0.0.68 -> 255.255.255.255.67: udp 310

Please suggest he necessary steps to get IP connected from DHCP server in firewall VLAN thru the switch.

A

Anonymous_User

Contributor III

Example: config system interface edit “xxxxxxx” set vdom "root" set allowaccess ping set role lan set snmp-index 54 set switch-controller-dhcp-snooping disable set interface "fortilink" set vlanid 140 next End

Reference:

https://forum.fortinet.com/tm.aspx?m=148713