A city diagram of the new IP fabric still shows STP blocked links between switches. What correction should the fabric team make to the diagram’s mental model?
Select an answer to reveal the explanation.
Short Explanation
If the whiteboard still has little STP red X marks on fabric links, it is stuck in access-pod thinking. An IP fabric keeps those links forwarding and lets routing plus ECMP share them. Blocked ports are the old story, not Clos.
Full Explanation
IP fabrics achieve loop-free multipath with Layer 3 routing and ECMP rather than Spanning Tree blocking on fabric links. Diagrams that retain STP blocked fabric ports mix L2 switched-fabric assumptions with Clos design. Rapid-PVST on spines alongside EBGP on the same underlay links is not the IP-fabric model. Equal-cost multipath depends on forwarding paths, not blocked alternates.