Dynamic Routing with BGP
Border Gateway Protocol (BGP) automates the exchange of routing information between autonomous systems (AS) to determine optimal paths for data traffic and failover routing without the need to configure and maintain static routes.
You add network tunnel groups to Secure Access to enable secure network connections to the internet and private resources. When setting up a network tunnel group, choose dynamic routing when you have a BGP peer for your on-premise router.
Dynamic routing using BGP enables the advertisement of customer-specific routes, ensuring the Secure Access tunnels can route return traffic. Without these routes, the Secure Access tunnels cannot properly route return traffic to the customer networks.
For more information about BGP, see Cisco Support documentation topics Select BGP Best Path Algorithm and Examine Border Gateway Protocol Case Studies