SD-WAN

Question 1

What is Cisco SD-WAN?

Answer 1

A software-based virtual IP fabric overlay network that builds secure, unified connectivity over any transport network (underlay network)

Question 2

What device handles the orchestration plane for Cisco SD-WAN?

Answer 2

vBond

Question 3

What is the role of vBond in Cisco SD-WAN?

Answer 3

vBond acts as the first point of contact, performs initial authentication when devices connect to the organization overlay.

Uses a zero-trust certificate-based allow-list model

Question 4

What is vBond’s function when vSmart controllers, vManage, or WAN Edge routers are behind NAT?

Answer 4

vBond facilitates NAT traversal by allowing the learning of public and private (post-and-pre NAT) addresses

Question 5

What is an IP addressing requirement for vBond?

Answer 5

vBond should have a static public IP or have a private IP with 1:1 NAT.

Question 6

vBond should be highly ________. Why?

Answer 6

Resilient

If vBond is down, no other device can join the overlay

Question 7

What device handles the management plane for Cisco SD-WAN?

Answer 7

vManage

Question 8

What does vManage allow you to do?

Answer 8

Handles management plane for Cisco SD-WAN

1) Centralized provisioning and policies
2) Device configuration templates
3) Troubleshoot and monitor the entire environment
4) Perform centralized software upgrades on all fabric elements

Question 9

Does vManage support multitenant mode?

Answer 9

Yes it does, besides singletenant mode.

Question 10

What device handles the control plane for Cisco SD-WAN?

Answer 10

vSmart

Question 11

What is the role of vSmart?

Answer 11

Manages control plane for Cisco SD-WAN. And:

1) Establishes Overlay Management Protocol (OMP) peering with all WAN Edge routers
2) Implements control plane policies (service chaining, traffic engineering, per-VPN topology)
3) Acts as a distribution point to establish data plane connectivity between WAN Edge routers