ZyXEL Communications 5 Series - Manual (Page 153)

ZyWALL 5/35/70 Series User’s Guide
Chapter 8 WAN Screens 153
The following table describes the labels in this screen.
Table 33 NETWORK > WAN (General)
LABEL DESCRIPTION
Active/Passive
(Fail Over) Mode Select the Active/Passive (fail over) operation mode to have the ZyWALL use the
second highest priority WAN port as a back up. This means that the ZyWALL will
normally use the highest priority (primary) WAN port (depending on the priorities
you configure in the Route Priority fields). The ZyWALL will switch to the
secondary (second highest priority) WAN port when the primary WAN port's
connection fails.
Fall Back to
Primary WAN
When Possible This field determines the action the ZyWALL takes after the primary WAN port fails
and the ZyWALL starts using the secondary WAN port.
Select this check box to have the ZyWALL change back to using the primary WAN
port when the ZyWALL can connect through the primary WAN port again.
Clear this check box to have the ZyWALL continue using the secondary WAN port,
even after the ZyWALL can connect through the primary WAN port again. The
ZyWALL continues to use the secondary WAN port until it's connection fails (at
which time it will change back to using the primary WAN port if its connection is up.
Active/Active
Mode Select Active/Active Mode to have the ZyWALL use both of the WAN ports at the
same time and allow you to enable load balancing.
Load Balancing
Algorithm Select Least Load First, Weighted Round Robin or Spillover to activate load
balancing and set the related fields. Otherwise, select None.
Refer to Section 8.7 on page 155 for load balancing configuration.
Route Priority
WAN1
WAN2
Traffic Redirect
Dial Backup
The default WAN connection is "1' as your broadband connection via the WAN port
should always be your preferred method of accessing the WAN. The ZyWALL
switches from WAN port 1 to WAN port 2 if WAN port 1's connection fails and then
back to WAN port 1 when WAN port 1's connection comes back up. The default
priority of the routes is WAN 1, WAN 2, Traffic Redirect and then Dial Backup:
You have three choices for an auxiliary connection (WAN 2, Traffic Redirect and
Dial Backup) in the event that your regular WAN connection goes down. If Dial
Backup is preferred to Traffic Redirect, then type "14" in the Dial Backup Priority
(metric) field (and leave the Traffic Redirect Priority (metric) at the default of
"15").
The Dial Backup field is available only when you enable the corresponding dial
backup feature in the Dial Backup screen.
Connectivity
Check
Check Period The ZyWALL tests a WAN connection by periodically sending a ping to either the
default gateway or the address in the Ping this Address field.
Type a number of seconds (5 to 300) to set the time interval between checks. Allow
more time if your destination IP address handles lots of traffic.
Check Timeout Type the number of seconds (1 to 10) for your ZyWALL to wait for a response to the
ping before considering the check to have failed. This setting must be less than the
Check Period. Use a higher value in this field if your network is busy or congested.
Check Fail
Tolerance Type how many WAN connection checks can fail (1-10) before the connection is
considered "down" (not connected). The ZyWALL still checks a "down" connection
to detect if it reconnects.