SD-Access Design Flashcards
What is a fabric border node responsible for?
Fabric border node are equivalent to what traditional campus layer?
Gateway between the fabric domain and connects traditional Layer-3 networks outside of the fabric. Allowing traffic to egress and ingress the fabric site to a Campus Fabric domain.
Core
What is a fabric intermediate node responsible for?
fabric intermediate nodes are equivalent to what traditional campus layer?
Layer-3 underlay transport service that interconnects the Fabric Edge and Fabric Border nodes.
Distribution
What is a fabric edge node responsible for?
Fabric edge nodes are equivalent to what traditional campus layer?
Encapsulating/decapsulating and forwarding traffic to and from endpoints connected to the fabric edge.
Access layer
What is a fabric edge node responsible for?
admitting, encapsulating/decapsulating and forwarding traffic to and from endpoints connected to the fabric edge.
Fabric edge nodes are the equivalent of an access layer switch.
What is a consideration in design when using IPv6 overlay tunnels?
overlay tunnels should support both IPv4 and IPv6 protocol stack or just require a IPv6 protocol stack
IPv6 tunnels can be configured only between?
border devices or a border device and a host
What is LISP and what layer is it in a SD-Wan architecture?
Handles the mapping and resolution of endpoint address of users/devices and runs on the control plane
What does LISP stand for?
Locator / ID Separator Protocol
What two things does LISP use for traffic forwarding for host mobility even if the IP address moves within the edge of the network?
(RLOC) Routing Locator
(EID) Endpoint Identifier
What is the Routing Locator (RLOC)?
Attached router
What is the Endpoint Identifier (EID)?
IP or MAC address
What is the default routing protocol for large networks including fabric based networks?
IS-IS
How does LISP simplify routing environments?
removes the need for routers to know every possible IP destination.
What are two methods of integrating wireless into an SD-WAN fabric?
Fabric mode wireless
Over the Top (OTT)
What is TrustSec?
enforcement technology that allows endpoint security management without the need to maintain access list on all network devices where endpoints are connect.
