THE GOAL: This setup aims to demonstrate how to bridge 2 internet connections using VLANS on a Draytek as Draytek routers only allow you to bridge a single connection.
THE METHOD:
VLANS
VLAN1 -> Port1 (send all traffic from WAN1 to eth port1)
VLAN2 -> Port2 (send all traffic from WAN2 to eth port2)
Routing policy in load balancing:
Interface WAN1 -> VLAN1 (send all traffic from WAN1 through VLAN1) (ADSL)
Interface WAN2 -> VLAN2 (send all traffic from WAN2 through to VLAN2) (LTE)
THE CONFIG (Router is Draytek 2862Lac)
LAN->General settingsLAN1>DHCP>192.168.1.1
LAN2>DCHP>192.168.2.1
Load Balance/Route Policy->Index: 1
Protocol->anySrc IP Start 192.168.1.1Src IP End 192.168.1.253
Destination IP->Any
Destination port->Any
Send if Criteria Matched
Interface->WAN1
Gateway IP: Default Gateway
More Options: Force NAT
Load Balance/Route Policy->Index: 2
Protocol->any
Src IP Start 192.168.2.1
Src IP End 192.168.2.253
Destination IP->Any
Destination port->Any
Send if Criteria Matched
Interface->WAN2
Gateway IP: Default Gateway
More Options: Force NAT
LAN->VLAN
VLAN1 check only P1->Subnet->LAN1
VLAN2 check only P2->Subnet->LAN2
Plug your P1 port on the Draytek into the WAN1 of the USG gateway
Plug your P2 port on the Draytek into the WAN2 of the USG gateway
Setup your WAN2/LAN port on the USG as a WAN network.
Diagram below
OrangeDux Support Team.