NETGEAR ProSafe Quad WAN FR538G, Справочное руководство

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ProSafe Quad WAN Gigabit Firewall FR538G Reference Manual
Connecting the FR538G 2-11
v1.0, November 2007
Configuring the WAN Mode (Required for Quad WAN)
The quad WAN ports of the ProSafe Quad WAN Gigabit Firewall can be configured on a mutually
exclusive basis for either auto-rollover (for increased system reliability) or load balancing (for
maximum bandwidth efficiency).
• Auto-Rollover Mode . In this mode, the selected WAN interface is made primary and the other
is the rollover link. As long as the primary link is up, all traffic is sent over the primary link.
Once the primary WAN interface goes down, the rollover link is brought up to send the
traffic.Traffic will automatically roll back to the original primary link once the original
primary link is back up and running again.
If you want to use a redundant ISP link for backup purposes, select the WAN port that will act
as the primary link for this mode. Ensure that the backup WAN port has also been configured
and that you configure the
WAN Failure Detection Method to support Auto-Rollover.
• Load Balancing Mode . In this mode the router distributes the outbound traffic equally among
the WAN interfaces that are functional.
For both alternatives, you must also set up Network Address Translation (NAT):
• NAT. NAT is the technology which allows all PCs on your LAN to share a single Internet IP
address. From the Internet, there is only a single device (the Router) and a single IP address.
PCs on your LAN can use any private IP address range, and these IP addresses are not visible
from the Internet.
Internet Traffic
Statistics This displays statistics on Internet Traffic via the WAN port. If you have not enabled
the Traffic Meter, these statistics are not available.
Traffic by Protocol Click this link if you want to know more details of the Internet Traffic. The volume of
traffic for each protocol will be displayed in a sub-window.Traffic counters are
updated in MBytes scale, counter starts only when traffic passed is at least 1MB.
Note: Scenarios could arise when load balancing needs to be bypassed for certain
traffic or applications. Here the traffic needs to go on a specific WAN
interface. This is done with the protocol binding rules of that WAN interface.
The rule should match the desired traffic.
Table 2-2. Traffic Meter Settings
Parameter Description