Which protocol is used in Software Defined Access (SDA) to provide a tunnel between two edge nodes in different fabrics?

The correct answer is C. Virtual Extensible LAN (VXLAN). 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

Submitted by packet_pusher· Mar 5, 2026Network Access

Question

Options

AGeneric Router Encapsulation (GRE)
BVirtual Local Area Network (VLAN)
CVirtual Extensible LAN (VXLAN)
DPoint-to-Point Protocol (PPP)

How the community answered

(60 responses)

A
3% (2)
C
95% (57)
D
2% (1)

Explanation

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.

Topics

#Cisco SDA#VXLAN#SDA overlay#Fabric tunneling

Community Discussion

No community discussion yet for this question.

Full 200-301 Practice