Example: Using Multi-Link to prepare for ISP downtime
This scenario shows an example of using Multi-Link to configure connections to two ISPs. This configuration guarantees connectivity if one ISP fails.
Company A wants to make sure that their Internet connection remains available even when one ISP connection fails. The company has subscribed to one Internet connection each from ISP A and ISP B. The administrators decide to use Multi-Link to guarantee High Availability of Internet connectivity.
The administrators do the following:
- Create NetLink elements to represent connections to ISP A and ISP B.
- Place the ISP A and ISP B NetLinks under the correct interfaces in the Routing tree.
- Create an Outbound Multi-Link element and add the ISP A and ISP B NetLinks to it.
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Define the following NAT rule in the Firewall Policy so that traffic from the internal network to destinations that are not internal is handled by the Outbound Multi-Link element:
Source Destination Service NAT Internal Network element Not Internal expression ANY Dynamic load balancing: My Multi-Link