In a multitenant EVPN-VXLAN city fabric, why must route distinguishers be unique per tenant routing instance?
Select an answer to reveal the explanation.
Short Explanation
RDs are name tags on identical house numbers from different neighborhoods. When two agencies both announce 10.1.0.0/24, unique RDs keep BGP from treating them as one confused prefix. They do not encrypt VXLAN or replace loopbacks.
Full Explanation
Route distinguishers make VPN/EVPN routes unique in BGP even when tenant prefixes overlap. Each tenant routing instance needs a distinct RD so control-plane paths remain unambiguous. RDs are not data-plane encryption, underlay loopback substitutes, or a reason to force identical values across tenants. RD hygiene is foundational multitenancy for JN0-683.