User`s guide

Chapter 5 WAN & 3G Cellular Screens
LAN-Cell 2 User’s Guide
95
The following table describes the labels in this screen.
Table 19 NETWORK > WAN General
LABEL DESCRIPTION
Active/Passive
(Fail Over) Mode
Select the Active/Passive (fail over) operation mode to have the LAN-Cell use the
second highest priority WAN interface as a back up. This means that the LAN-Cell
will normally use the highest priority (primary) WAN interface (depending on the
priorities you configure in the Route Priority fields). The LAN-Cell will switch to the
secondary (second highest priority) WAN interface when the primary WAN
interface's connection fails.
Fall Back to
Primary WAN
When Possible
This field determines the action the LAN-Cell takes after the primary WAN interface
fails and the LAN-Cell starts using the secondary WAN interface.
Select this check box to have the LAN-Cell change back to using the primary WAN
interface when the LAN-Cell can connect through the primary WAN interface again.
Clear this check box to have the LAN-Cell continue using the secondary WAN
interface, even after the LAN-Cell can connect through the primary WAN interface
again. The LAN-Cell 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.
Active/Active
Mode
Select Active/Active Mode to have the LAN-Cell use both of the WAN interfaces
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 5.2.1 on page 97 for load balancing configuration.
Route Priority
WAN
Cellular
Traffic Redirect
Dial Backup
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
LAN-Cell switches from the WAN interface to the Cellular if the WAN interface's
connection fails and then back to WAN interface when the WAN interface’s
connection comes back up. The default priority of the routes is WAN, Cellular,
Traffic Redirect and then Dial Backup:
You have three choices for an auxiliary connection (Cellular, 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 LAN-Cell 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 3600) 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 LAN-Cell 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 LAN-Cell still checks a "down" connection
to detect if it reconnects.