Routing Methods

Link Aggregation
There are a number of methods to perform load balancing across multiple links.  Each method utilizes our ESP (enhanced session persistence) methodology.  Some of the methods to choose from include, round-robin, spill-over, weighted, and IVRA.
- IVRA is the default and the easiest to use as it is dynamic.  It will automatically setup routes and modify those routes as needed, no user updates are required. 
- Round-robin essentailly balances sessions between links based solely on selecting networks at random in a round-robin nature. 
- Weighted is similar to round-robin except that one can place additional emphasis on a specific link using the weight option which can be configured with each WAN interface. 
- Spill-over simply works when the primary WAN links becomes heavily utilized.

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