Juniper Networks 200 Series manual Establishing AN HA Connection Between Devices

Chapter 3 Configuring the Device

ESTABLISHING AN HA CONNECTION BETWEEN DEVICES

To assure continuous traffic flow in the event of system failure, you can cable and configure two NetScreen devices in a redundant cluster. The devices propagate all network, configuration and session information to each other. Should one device fail, the other takes over the traffic processing.

Note: For the NetScreen-204, the default HA interface is ethernet4. For the NetScreen-208, the default HA interface is ethernet8. (Each is bound to the HA security zone.)

The following diagram shows a typical HA setup for NetScreen-208 devices.

Internet

Router Router

Layer-3 Switch 1 Layer-3 Switch 2

Device 1

To ethernet3 To ethernet3 Device 2

	To ethernet2	To ethernet2	To ethernet8
To ethernet1	DMZ		To ethernet1

DMZ LAN

Switch 3 Switch 4

LAN

20 User’s Guide