NOC staff expect classic STP MAC-flush behavior after a topology ch…

Question

NOC staff expect classic STP MAC-flush behavior after a topology change, but the city fabric is EVPN-VXLAN. What contrast should they apply?

Accepted Answer

EVPN MAC mobility and control-plane updates replace classic STP topology-change flush models in the IP fabric overlay — Old campus thinking waits for STP to yell 'flush!' — EVPN fabrics update MACs with mobility and BGP instead. You do not need PVST TCN theater across the underlay for overlay moves.

Answer

Every leaf must run PVST and flood TCNs across the VXLAN underlay for correctness

Answer

MAC tables freeze forever once EVPN is enabled, so moves require manual clears only

Answer

STP flush is still mandatory on all VTEP loopbacks before Type-2 can advertise

NOC staff expect classic STP MAC-flush behavior after a topology change, but the city fabric is EVPN-VXLAN. What contrast should they apply?

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