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Which campus fabric architecture supports Layer 3 gateways at the distribution layer?
Correct Answer: C
In Juniper'scampus fabric architectures, the location of theLayer 3 gateway(IRB) differentiates between CRB and ERB models: Centrally-Routed Bridging (CRB):L3 gateways are placed at thecore layer. Edge-Routed Bridging (ERB):L3 gateways are placed at thedistribution layer, closer to the edge. "In the ERB model, Layer 2 gateways are deployed at the access layer, andLayer 3 gateways are deployed at the distribution layer." Option A (CRB):Incorrect - L3 is at the core, not distribution. Option B (IP Clos):Incorrect - in 3-stage Clos, L3 is pushed to the access layer. Option D (EVPN multihoming):Incorrect - this is about redundancy, not gateway placement. Option C (ERB):Correct - L3 gateways sit at thedistribution layerin the ERB architecture. References: Juniper Mist AI for Wired - Campus Fabric Architecture Models Juniper Validated Design - Core/Distribution CRB vs ERB Gateways Junos OS EVPN-VXLAN Campus Fabric Deployment Guide