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Diagram:
FortiGate 601F -> FortiSwitch 2048F -> FortiSwitch 648F.
- Check the phy-mode on the Fortiswitch-2048F ports to make sure 10G/25G are used on them (this is when connecting to either FortiGate or FortiSwitch).
FortiSwitch CLI:
config switch phy-mode
set port1-port12-phy-mode 25G
set port13-port24-phy-mode 1G/10G
set port25-port36-phy-mode 25G
set port37-port48-phy-mode 25G
end
- Disable the FEC-state when connecting FortiSwitch-2048F to FortiSwitch-648F:
FortiSwitch CLI:
config switch physical-port
edit port3
set fec-state disabled
show
end
FortiGate switch-controller CLI:
config switch-controller managed-switch
edit <FSW SN>
config ports
edit port3
set fec-state disabled
show
end
Check:
diagnose switch physical-ports list port3
- FortiGate-601F 10G-25G ULL ports change (x5,x6,x7,x8 ports of the FortiGate-601F can either be set to 10G/25G).
FortiGate CLI:
config system npu
set ull-port-mode 10G or 25G
end
FortiGate will perform a reboot after this change. Once it comes online, the ports of the FortiGate will either have 10G or 25G speed set on them.
After these changes, the FortiSwitch-2048F links will connect to the FortiGate-601F and FortiSwitch-648F.
For the Link between 2048F and 648F not coming up:
For example: 2048F (port2) -> 648F (port55).
Check the configuration on port 2 and port 55 on each switch
Current config:
2048 FortiSwitch:
edit "port2"
set fec-state disabled <-----
set lldp-profile "default-auto-isl"
set speed auto-module
648 FortiSwitch:
edit "port55"
set dmi-status global
set fec-state cl74 <-----
In this case, make sure to set the fec state as cl74 on the 2028F side too.
New config on 2048:
edit "port2"
set fec-state cl74
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