If the security tool fails, the NN device allows the traffic flow to continue without any traffic loss. This feature also allows you to take down the security tool for maintenance purposes.
The Niagara Device is used for implementing 1+1 redundancy between security appliances.
The passive bypass allows for continuous traffic flow even if the Niagara device itself fails.
Increase efficiency by setting load balancing schemes to cover all traffic, and maintaining flow-aware policy
Load balancing between similar inline devices allows you to utilize existing network security tools (with lower processing performance), to handle higher capacity network links. For example: if your tool supports up to 10G and you want to upgrade your network to 100G, you can load balance your traffic to multiple tools.
This feature also allows you to take down a tool for maintenance and the load balancing scheme will automatically redistribute the traffic to the remaining tools.