Session mirroring allows you to send a copy of a context to an external device called a delivery function for analysis. With session mirroring, the original session is sent to its intended destination and the mirrored session is sent to the delivery function. The mirroring operations are transparent to the user whose session is being mirrored.
Session mirroring is supported for IPv4 and IPv6 traffic. IPv6 packets that are mirrored are encapsulated in IPv4 headers.
The packet gateway can mirror up to 1 percent of gates at a time.