Technical Tip: How to troubleshoot FortiGate-50G connectivty issue with switches

If connectivity between  FortiGate-50G with SFP and third-party vendor switches like HPE, Aruba, or Cisco does not function as expected, disable the auto-negotiation on both FortiGate-50G and the switch device.

config system interface

    edit "sfp"

        set vdom "root"

        set type physical

        set snmp-index 6

        set speed 1000full

Example configuration of HP switch:

Console# show running-config

interface ethernet 1/e1

ip address x.x.x.x

duplex full

speed 1000

no negotiation

Note: FortiGate-50G supports 7.0.x. If auto-negotiation is not available, disable it from the switch side to return the link status to UP.