A 100% is correct , per book .
C is also seems right . Edge node is an xTR that provides, provides onboarding and mobility services for wired users and devices
(including fabric-enabled WLCs and APs) connected to the fabric.
I prefer C over B because of this:
VXLAN encapsulation/de-encapsulation
Packets and frames received from endpoint... are encapsulated in fabric VXLAN and forwarded across the overlay.
When fabric encapsulated traffic is received for the endpoint... it is de-encapsulated and sent to that endpoint.
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html
It's A and B.
Straight from Cisco's training PDF - https://www.cisco.com/c/dam/m/hr_hr/training-events/2019/cisco-connect/pdf/VH-Cisco-SD-Access-Connecting.pdf
Edge Node provides first-hop services for Users / Devices connected to a Fabric
• Responsible for Identifying and Authenticating
Endpoints (e.g. Static, 802.1X, Active Directory)
• Register specific Endpoint ID info (e.g. /32 or /128)
with the Control-Plane Node(s)
• Provide an Anycast L3 Gateway for the connected
Endpoints (same IP address on all Edge nodes).
• Performs encapsulation / de-encapsulation of data
traffic to and from all connected Endpoints
hth
Not sure why C is favored over B. One edge node is not providing "multiple" entry and exit points. Only the entry and exit point is true, but multiple makes it false. The default entry point is the default gateway for the clients, so B is true.
Going with A & B
CCNP Book: Fabric Edge Nodes
A fabric edge node provides onboarding and mobility services for wired users and devices
(including fabric-enabled WLCs and APs) connected to the fabric. It is a LISP tunnel router
(xTR) that also provides the anycast gateway, endpoint authentication..
A is clear "A fabric edge first identifies and authenticates wired endpoints (through 802.1x), in order to place them in a host pool (SVI and VRF instance) and scalable group (SGT assignment).
Based on below i would say B is also clear:
A fabric edge provides a single Layer 3 anycast gateway (that is, the same SVI with the
same IP address on all fabric edge nodes) for its connected endpoints and also performs the
encapsulation and de-encapsulation of host traffic to and from its connected endpoints.
You cannot get out of the fabric directly through an edge node. Edge nodes serve as entry points into the fabric for endpoints (users, devices, IoT). However, they do not handle traffic leaving the fabric. Instead, traffic leaving is forwarded to a Border Node, which is responsible for routing traffic out of the fabric to external networks. Answer A & B.
A. is definitely correct but C is explained below.
A fabric edge performs the encap and decap of host traffic to and from its connected endpoints. CCNP ENCOR Cert guide - p.623
Edge Node provides first-hop services for Users / Devices connected to a Fabric
[A] • Responsible for Identifying and Authenticating Endpoints (e.g. Static, 802.1X, Active Directory)
[B] • Performs encapsulation / de-encapsulation of data traffic to and from all connected Endpoints
https://www.cisco.com/c/dam/m/hr_hr/training-events/2019/cisco-connect/pdf/VH-Cisco-SD-Access-Connecting.pdf
A. fabric edge first identifies and authenticates wired
endpoints (through 802.1x), in order to place them in a
host pool (SVI and VRF instance) and scalable group
(SGT assignment). It then registers the specific EID host
address (that is, MAC, /32 IPv4, or /128 IPv6) with the
control plane node.
B. It's next-hop VTEP for hosts
!=C. The control plane (host database) maps all EID locations
to the current fabric edge or border node.
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