The Direct Standby function allows two PacketShapers to work in a redundant network topology, with each unit connected to a different router, and the two units directly connected to each other. Both units are considered active and each unit can receive and forward traffic.
Follow the link below for a High Availability Overview in PacketGuide:
The following are the requirements to set up Direct Standby:
Note: If there is any difference in the two partner units, the Direct Standby feature will not function optimally.