I work for a company called CompanyA and we had a Ubiquiti EdgeRouter and I'm replacing it with a Draytek 2960, the internet is provided via a Leased Line with 20 static public IP Addresses. There is a company in the same building as us called CompanyB and they share our leased line, previously the leased line went direct into the EdgeRouter and companyB's router plugged into one of the LAN ports on the EdgeRouter and this worked fine, I cant seem to replicate the setup on the Draytek to get internet traffic to CompanyB's router. CompanyB have a Fortinet router which Im not familiar with. I have a cable running from LAN2 on the Draytek into WAN1 on the Fortinet router, the Fortinet router on the WAN1 interface has a static address set of 188.8.131.52/255.255.255.248 which hasnt been changed since it worked with the EdgeRouter The guy who originally setup the connection gave me the following notes
Gateway IP for CompanyB: 184.108.40.206
Usable IP Range: 220.127.116.11-18.104.22.168
All of the 20 IP Addresses including the above IP's have been added to the router WAN setup as aliases.
As you can tell im using fake IP addresses but you get the idea.