Table 36 Network > Wan (General) - ZyXEL Communications ZYWALL 35 User Manual

Chapter 8 WAN Screens
The following table describes the labels in this screen.
Table 36 NETWORK > WAN (General)
LABEL
Active/Passive
(Fail Over) Mode
Fall Back to
Primary WAN
When Possible
Active/Active
Mode
Load Balancing
Algorithm
WAN Interface to
Local Host
Mapping Timeout
Route Priority
WAN1
WAN2
Traffic Redirect
Dial Backup
Connectivity
Check
Check Period
Check Timeout
174
DESCRIPTION
Select the Active/Passive (fail over) operation mode to have the ZyWALL use the
second highest priority WAN interface as a back up. This means that the ZyWALL
will normally use the highest priority (primary) WAN interface (depending on the
priorities you configure in the Route Priority fields). The ZyWALL will switch to the
secondary (second highest priority) WAN interface when the primary WAN
interface's connection fails.
This field determines the action the ZyWALL takes after the primary WAN interface
fails and the ZyWALL starts using the secondary WAN interface.
Select this check box to have the ZyWALL change back to using the primary WAN
interface when the ZyWALL can connect through the primary WAN interface again.
Clear this check box to have the ZyWALL continue using the secondary WAN
interface, even after the ZyWALL can connect through the primary WAN interface
again. The ZyWALL continues to use the secondary WAN interface until it's
connection fails (at which time it will change back to using the primary WAN
interface if its connection is up.
Select Active/Active Mode to have the ZyWALL use both of the WAN interfaces at
the same time and allow you to enable load balancing.
Select Least Load First, Weighted Round Robin or Spillover to activate load
balancing and set the related fields. Otherwise, select None.
Refer to Section 8.8 on page 176
Select this option to have the ZyWALL send all of a local computer's traffic through
the same WAN interface for the period of time that you specify (1 to 600 seconds).
This is useful when a redirect server forwards a local user's request for a file and
informs the file server that a particular WAN IP address is requesting the file. If the
user's subsequent sessions came from a different WAN IP address, the file server
would deny the request.
This field is configurable only when you select Active/Active Mode and enable
load balancing.
The default WAN connection is "1' as your broadband connection via the WAN
interface should always be your preferred method of accessing the WAN. The
ZyWALL switches from WAN interface 1 to WAN interface 2 if WAN interface 1's
connection fails and then back to WAN interface 1 when WAN interface 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.
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.
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.
for load balancing configuration.
ZyWALL 5/35/70 Series User's Guide