Load Balancing is a method aiming to spread traffic across multiple links to get better link usage. This can be done one per-packet or per-connection basis.

AskF5 | Manual Chapter: Configuring ISP Load Balancing Overview: ISP load balancing You might find that as your network grows, or network traffic increases, you require an additional connection to the Internet. You can use this configuration to add an Internet connection to your existing network. The following illustration shows a network configured with two Internet connections. IOS NAT Load-Balancing for Two ISP Connections - Cisco Feb 22, 2008 Backup ISP | Secondary Internet Connection | Redundant ISP Jan 28, 2016

Load balancers are generally grouped into two categories: Layer 4 and Layer 7. Layer 4 load balancers act upon data found in network and transport layer protocols (IP, TCP, FTP, UDP). Layer 7 load balancers distribute requests based upon data found in application layer protocols such as HTTP.

DotW: Multiple ISPs - Palo Alto Networks Jul 29, 2019

4. Configure Dual ISP load balancing on Two Cisco Routers . The first thing that we need to do here to have ISP load balancing with multiple internet connections is to configure dynamic NAT, dynamic network address translation, on Cisco routers R2 and R3 that connected directly to ISP routers.

Jun 21, 2018 Multiple WAN Connections — Load Balancing and Failover Feb 07, 2019 EdgeRouter - WAN Load-Balancing – Ubiquiti Networks