Direct Standby Tasks

The direct standby function allows two PacketShapers to work in a redundant network topology, with each unit connected to a different router. The two units are directly connected to each other, through the OUTSIDE port on the upper-most or right-most LAN Expansion Module (LEM). Both units are considered active and each unit can receive and forward traffic. To ensure that both units accumulate the same traffic tree and measurement data, each PacketShaper processes the packets received by the other unit. When a unit directly receives traffic, it will copy that traffic and transmit it to the other unit. The other unit will classify the traffic, just as if it had received it directly, but it will never forward the traffic onward to the LAN. As a result, each unit is ready at any time to take over full PacketShaper responsibility should the other unit go down.

For details on the direct standby feature, see High Availability Overview.

Use the navigation bar to select a direct standby task.