SonicOS Expanded License activate the BGP Advanced Routing feature

Border Gateway Protocol (BGP) advanced routing.

BGP is a large-scale routing protocol used to communicate routing information between Autonomous Systems (AS’s), which are well-defined, separately administered network domains. BGP support allows for SonicWALL security appliances to replace a traditional BGP router on the edge of a network's AS. The current SonicWALL implementation of BGP is most appropriate for "single-provider / single-homed" environments, where the network uses one ISP as their Internet provider and has a single connection to that provider.

SonicWALL BGP is also capable of supporting "single-provider / multi-homed" environments, where the network uses a single ISP but has a small number of separate routes to the provider. Because BGP transmits packets in the clear, SonicWALL supports using an IPSec tunnel for secure BGP sessions. The IPSec tunnel is configured independently within the VPN configuration section of the SonicOS Web-based management interface, while BGP is enabled on the Network > Routing page and then configured on the SonicOS Command Line Interface.