Layer 2 Bridge Bypass (Fail to Wire)
Layer 2 Bridge Bypass is a physical interface bypass relay implemented on the NOS-300 and NOS-450 appliances. This feature is sometimes known as “fail to wire”, meaning that the LAN-WAN connection reverts to a straight-through connection if the appliance experiences a hardware or software failure. When the bypass relay is closed, network traffic flows unimpeded between the lan0 and wan0 interfaces like a single cable. When the bypass relay is open, network traffic is handled by the Wanos software. The bypass relay is opened or closed on demand by software.