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Which protocol is used in Software Defined Access (SDA) to provide a tunnel between two edge nodes in different fabrics?
Correct Answer: C
The SD(Cisco Software-Defined Access)-Access fabric uses the VXLAN data plane to provide transport of the full original Layer 2 frame and additionally uses LISP as the control plane to resolve endpoint-to-location (EID-to-RLOC) mappings. The SD-Access fabric replaces sixteen (16) of the reserved bits in the VXLAN header to transport up to 64,000 SGTs using a modified VXLAN-GPO (sometimes called VXLAN-GBP) format described in https://tools.ietf.org/html/draft- smith-vxlan-group-policy-04.