NETGEAR UTM5 Reference Manual page 75

ProSecure Unified Threat Management (UTM) Appliance
Note: For the UTM9S only, you can also use a DSL interface for any of the
following modes (see
• Load balancing mode. The UTM distributes the outbound traffic equally among the
WAN interfaces that are functional. Depending on the UTM model, you can configure up
to four WAN interfaces. The UTM supports weighted load balancing and round-robin load
balancing (see Configure Load Balancing and Optional Protocol Binding
Note: Scenarios could arise when load balancing needs to be bypassed
for certain traffic or applications. If certain traffic needs to travel on a
specific WAN interface, configure protocol binding rules for that
WAN interface. The rule should match the desired traffic.
• Primary WAN mode. The selected WAN interface is made the primary interface. The
other interfaces are disabled.
• Auto-rollover mode. The selected WAN interface is defined as the primary link, and
another interface needs to be defined as the rollover link. If the UTM model has more
than two WAN interfaces, the remaining interfaces are disabled. As long as the primary
link is up, all traffic is sent over the primary link. When the primary link goes down, the
rollover link is brought up to send the traffic. When the primary link comes back up, traffic
automatically rolls back to the original primary link.
If you want to use a redundant ISP link for backup purposes, select the WAN interface
that needs to function as the primary link for this mode. Ensure that the backup WAN
interface has also been configured and that you configure the WAN failure detection
method on the WAN Advanced Options screen to support auto-rollover (see
Auto-Rollover Mode and the Failure Detection Method (Multiple WAN Port Models)
page 77).
Whichever WAN mode you select for the multiple WAN port models, you also need to select
either NAT or classical routing, as explained in the following sections.
Note: NAT and classical routing also apply to the single WAN port models.
WARNING:
When you change the WAN mode, the UTM restarts. If you change
from primary WAN mode to load balancing mode, or the other way
around, the interface through which you can access the UTM
might change. Take note of the IP addresses of the interfaces
before you change the WAN mode.
Appendix A, xDSL Module for the
Manually Configuring Internet and WAN Settings
75
UTM9S).
on page 80).
Configure
on