Transparent Mode
The following figure shows the traffic flow between appliances in the transparent mode when catena is enabled, enabled with bad traffic, and disabled.
TCAM Based Load Balancing
The following figure shows how Catena uses a cross function of IP-ACL entries along with TCAM FIB to bucket the traffic streams to multiple egress interfaces.
Hash Based Load Balancing
Catena uses source IP or destination IP to determine the egress interface. Egress interface ports are bundled using the link aggregation control protocol (LACP), and hash algorithms are used for symmetric load balancing.