Auto negotiation on internal interface 100A

From the CLI, check out the following:

FGT 1000a $ config system interface    (interface)$ edit port10 (Use your interface name here!!)    (port10)$ set speed ?  1000full    1000M full-duplex  1000half    1000M half-duplex  100full     100M full-duplex  100half     100M half-duplex  10full      10M full-duplex  10half      10M half-duplex  auto        auto adjust speed    (port10)$ end    FGT 1000a $

The 100A has a 4 port switch for its internal interface so the options are not available ! The WAN and DMZ ports being individual can be set as you describe using the CLI.

Prior to connecting to the HP 1GB switch we used an Allied Telesyn 10/100. The fortigate connected at 100m full. I have asked for the HP switch to be set to Auto 10/100 negotiate only so will see what that does !

Yes, this has been tried but the fortigate still only shows a connection of 10m full. The HP switch shows the connection as 100m full regardless of auto or forced 100m full ?!

I' m sorry to disappoint you, the speed command is not available on individual ports in interface mode. Just tested it. That leaves the upgrade MR5 and using the set internal-switch-speed or use a DMZ port as an internal. In MR5 you can label the network port via an alias DMZ = internal Regards, Eric