When configuring Direct Internet Access (DIA) using the automated workflow in Versa Director, the system creates a dedicated VRF for internet traffic (Internet VR). To enable communication between this new VRF and the existing LAN VRF, the workflow automatically provisions Tunnel Virtual Interfaces (tvi) in each VRF. An external BGP (eBGP) session is then established over these tvi interfaces. This eBGP peering is used to advertise a default route (0.0.0.0/0) from the Internet VRF to the LAN VRF, thereby directing internet-bound traffic from the LAN out the local internet circuit.

A. static routing: While static routes can be configured manually for inter-VRF routing, the automated DIA workflow defaults to the more dynamic and scalable BGP protocol.

B. OSPF: OSPF is an Interior Gateway Protocol (IGP) typically used for routing within a single VRF or routing domain, not as the default for route exchange between separate VRFs in this context.

D. VRRP: The Virtual Router Redundancy Protocol (VRRP) is a first-hop redundancy protocol used to provide a virtual, highly available gateway IP address; it is not a routing protocol.

1. Versa Networks

"Versa Secure SD-WAN Configuration Guide": In the section detailing Direct Internet Access (DIA) configuration via workflows

the guide specifies the automated creation of an Internet VRF and the establishment of an eBGP session. It states

"The workflow automatically configures eBGP peering between the service VRF and the newly created Internet VRF over the tvi interfaces to exchange routes." (Typically found in chapters related to 'Workflows' or 'Routing Configuration').

2. Versa Networks

"VOS™ BGP Configuration Guide": This document explains the use of BGP for advanced routing scenarios

including inter-VRF route leaking. The principles described for connecting different routing instances (VRFs) on the same node align with the DIA workflow's use of eBGP over a logical interface like a tvi. (Refer to sections on 'VRF Route Leaking' or 'Inter-AS BGP Peering').