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After upgrading FortiGate-80F to v7.4.8, the interfaces of wan1 and wan2 are showing as down if a fiber connection was used before the upgrade. To confirm the status, the following should be checked:
- Both wan1 and wan2 interface ports are connected with fiber cables.
- Issue the following command to confirm that SFP readings are healthy:
get system interface transceiver
- Run the following commands to verify if the interface Admin status is up:
diagnose hardware deviceinfo nic wan1
diagnose hardware deviceinfo nic wan2
Sample output:
========== Link Status ==========
Admin :up
netdev status :down
autonego_setting :1
link_setting :1
speed_setting :1000
duplex_setting :0
Speed :10
Duplex :N/A
link_status :Down
- Run the following command to check the physical interface settings:
get system interface physical wan1
get system interface physical wan2
The medium is showing as copper, the issue faced matches a known issue reported for FortiGate-80F v7.4.8:
FGT # get system interface physical wan2
== [onboard]
==[wan2]
mode: static
ip: 1.1.1.1 255.255.255.255
ipv6: ::/0
status: down
speed: n/a
medium: copper
FEC: none
FEC_cap: none
The issue is resolved in v7.4.9 and v7.6.4. The workaround for v7.4.8 is to set the medium type to fiber manually:
diagnose hardware shared-port wan1 fiber
diagnose hardware shared-port wan2 fiber
The commands need to be issued on Primary and Secondary devices separately if HA is configured.
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