WAN Connection Fail-Over Order

ESG is configured to ensure continuous Internet connectivity by automatically switching between multiple Wide Area Network (WAN) connections in the event of a failure. The failover process is designed to prioritize connections in the following order to maintain optimal network performance:

1. Primary WAN Connection (WAN1 or WAN2)

   This is the default connection for all outgoing and incoming traffic.

   It utilizes an Ethernet interface for reliable, high-speed internet access.

2. Secondary WAN Connection (WAN1 or WAN2 or Cellular)

   Activates automatically if the primary WAN connection fails.

   Can be configured either as another Ethernet in terface (WAN) or a Cellular connection.

3. Tertiary WAN Connection (WAN1 or WAN2 or Cellular)

   Takes over if both the primary and secondary connections fail.

   Like the secondary, this can also be set up as an additional Ether net interface (WAN) or a Cellularconn ection.

• Interfaces Supported:

  • WAN1 and WAN2: Both are Ethernet interfaces, ensuring high-speed, wired internet access.

  • WWAN: A Cellular interface option for when traditional WAN connectivity is unavailable.

• Fallback to Primary: Upon restoration of the primary WAN connection, the ESG automatically reverts back to it to ensure optimal internet speeds and reliability.

Link Monitor

Link monitoring is essential for failover traffic. A link monitor verifies the connectivity of the device interface to ensure it is online and operational. If the link monitor IP address becomes inaccessible or unstable, the corresponding interface is marked as down, initiating the failover process. When the link monitor IP address stabilizes, the system automatically fails back to the primary WAN connection.

The link monitor IP addresses are as follows:

WAN1 link monitor IP address: 8.8.8.8

WAN2 link monitor IP address: 8.8.4.4

WWAN link monitor IP address: 1.0.0.1

In the event of a physical link or port failure, the failover process is triggered immediately.

This configuration ensures that the ESG can maintain continuous internet connectivity, prioritizing the most reliable and high-speed options available, and automatically adjusting as conditions change.