Which function are fabric intermediate nodes responsible for in an SD-Access Architecture?

The correct answer is D. transporting IP packets between edge nodes and border nodes. In Cisco SD-Access, the fabric has three node roles: Edge Nodes connect endpoints, perform EID-to-RLOC registration, and encapsulate/decapsulate VXLAN traffic; Border Nodes connect the fabric to external networks; and Intermediate Nodes (also called fabric transit nodes) sit in…

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Question

Options

Amapping EIDs to RLOCs
Bencapsulating user traffic in a VXLAN header including the SGT
Cregistering new endpoints in the HTDB
Dtransporting IP packets between edge nodes and border nodes

How the community answered

(37 responses)

B
5% (2)
C
3% (1)
D
92% (34)

Explanation

In Cisco SD-Access, the fabric has three node roles: Edge Nodes connect endpoints, perform EID-to-RLOC registration, and encapsulate/decapsulate VXLAN traffic; Border Nodes connect the fabric to external networks; and Intermediate Nodes (also called fabric transit nodes) sit in the underlay path between edge and border nodes. Intermediate nodes simply forward IP packets in the underlay - they are unaware of LISP mappings, do not encapsulate traffic (that is the edge node's job), and do not register endpoints (that is also the edge node's job interacting with the map server). Their sole responsibility is high-speed packet transport across the fabric underlay.

Topics

#SD-Access#Fabric Intermediate Node#Network Architecture#Underlay

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