EVPN Type 2 and Type 5 route coexistence and preference algorithm

EVPN Type 2 and Type 5 routes can coexist in an EVPN-VXLAN fabric with a preference algorithm that results in more efficient traffic flow. If you enable Type 5 routes, the switch uses Type 2 routes by default for any destinations for which it has no Type 5 route. Otherwise, the switch gives preference to:

• Type 2 routes for local ESI interfaces (locally learned routes)
• Type 5 routes for all other destinations within the data center or across data centers

You can fine-tune these preferences by configuring routing policies in the EVPN routing instance to control the Type 5 routes the switch imports and exports.