Multicast and VLANs with FortiGate/HP Aruba

[Cdric]

Hi there and thank you for reading

Our devices :

Router : Fortigate 100D (6.0.6)

Switch : HP Aruba 2530-24G

Extra : Startech HDMI over IP Extender Kit

I have to setup a Video system with HDMI over IP devices(startech ST12MHDLAN) : we have 3 TV(separated) in our site where we want to cast informations (video and pictures).

First, I managed to cast my PC without problems on another PC screen, but with no VLANs.

I don't really know how I can do that, but after researching, I found :

Fortigate is in NAT mode

I enabled Multicast in the Fortigate

I enabled IGMP in the switch

There is a VLAN called "Video" in the Switch, so all the HDMI over IP devices should be in this VLAN

I think that my first problem is create a route to make the Video VLAN (VLAN 100) accessible, but I don't really know how to do it...

I found that I have to create an interface between Forti and the VLAN ? is that right ?

So should I create a software interface to route it after ?

So if I have to do that, I will create an IP address for that interface ? Is this IP become the gateway (like 10.25.100.1)?

What about firewall-policy rules ?

These are my first questions, I will have others for sure :)

Thanks for answers, thanks for help