Question

A network architect is designing a Cisco Catalyst SD-WAN control policy so that branch sites in the East region prefer to reach data center services through the primary DC WAN edge (TLOC color 'mpls') and fall back to the secondary DC WAN edge (TLOC color 'biz-internet') only if the primary is unavailable. This preference must be enforced from vSmart without altering each branch's local configuration. Which approach correctly implements this requirement?

Accepted Answer

Apply a centralized control policy on vSmart that matches the DC service routes and sets a higher preference value on the TLOC/route advertised from the primary MPLS edge, applied outbound to the East region branch site-list

Answer

Configure a localized data policy on each East branch router that sets a next-hop TLOC toward the MPLS edge with a backup action toward biz-internet

Answer

Create an app-aware routing policy on vSmart with an SLA class that matches loss and latency thresholds to steer traffic to the MPLS edge

Answer

Apply a centralized data policy on vSmart that matches source prefixes and forwards traffic out the biz-internet TLOC with local-TLOC-list fallback