Juniper Networks 5000 SERIES - Manuel (Page 27)

Establishing an HA Connection
NetScreen-5000 Series 19
E
STABLISHING AN
HA C
ONNECTION
To assure continuous traffic flow in the event of system failure, you can cable and
configure two NetScreen devices in a redundant cluster, with one device acting as a
master and the other as its backup. The master propagates all its network, configuration
and session information to the backup. Should the master fail, the backup is promoted to
master and takes over the traffic processing.
To physically connect the master and backup devices, the 5000-M and 5000-M2
management modules provide a pair of High Availability (HA) ports. To connect the
NetScreen-5000 Series devices, you can use the provided Gigabit Ethernet mini-GBIC
cable. Use this cable to connect the HA1 port on one system to the HA1 port on another
system. Though you cannot connect HA ports between 5000-M and 5000-M2 management
modules, you can connect HA ports between the same type of management module. For
example, a 5000-M management module to another 5000-M management module.
For information on setting up HA configurations, see the NetScreen Concepts & Examples
ScreenOS Reference Guide.
C
ONNECTING THE
N
ET
S
CREEN
-5000 S
ERIES TO A
R
OUTER
OR
S
WITCH
You can establish a high-speed connection to a router or switch, and provide firewall and
general security for your network, by connecting a Secure Port Module (SPM) to a fiber-
optic or copper wire backbone. There are two ways to create this connection:
• Connect a Fiber Optic cable from one of the mini-GBIC ports to the router (or
switch).
• Connect an Unshielded Twisted Pair (UTP) CAT5 cable from an FE port to the
router (or switch).