We have a cisco catalyst WS-C3850-24XS 24 port 10g switch and are unable to connect Fortinet by SEP fiber connection. So basically we want load balancing for ISP, once we connect via VLAN one side gets up & the other side of the port gets down.
Post the complete output to the command "sh version".
I want to see what is the exact IOS-XE version as well as the uptime.
Early releases of 3.X.X and 16.X.X firmware for the 3850 have a long list of bugs affecting the optic ports. I think there are even some which "crashes" the optic ports after a long uptime so the optics will not get recognized during OID.