Instruction manual

Chapter 2 Installation, Configuration and Management
NetScaler 9000 Series Installation and Configuration Guide - Volume 1 2-17
NSICG60_DEC04
 Public-Public
In this environment, the real servers behind the NetScaler 9000 system
are on a publicly routable IP subnet. Unlike the public-private
environment (described in the next section), you do not need to configure
the NetScaler 9000 system as the default router of the real servers.
Figure 2-20 on page 17 shows a public-public, multiple subnet
environment where the NetScaler 9000 system is in a high availability
setup, placed between two layer 2 switches in a two-arm configuration.
The dashed line shows the separation of two public subnets.
The following applies to this environment:
z Virtual IP addresses (VIPs) configured in the NetScaler 9000
system are on a public subnet.
z The two NetScaler systems, their IP addresses and the mapped IP
address are on public subnets.
z The servers and their IP addresses may be either in the same or
different public subnets.
This environment can be varied to yield a one-arm mode configuration
with or without high availability.
Figure 2-20 NetScaler 9000 system in High Availability and Two-Arm Mode
(Multiple Subnet Environment)