300-420 Question 179
Select 4A company is deploying Cisco SD-WAN and plans to configure the customer edge (CE) devices at multiple branch locations. The IT team wants to ensure optimal performance, secure communication, and scalability for its SD-WAN deployment. Which feature(s) should be configured on the SD-WAN customer edge devices to achieve these goals?
- A
IPSec tunnels for secure communication between customer edge devices
- B
Dynamic routing protocols such as OSPF or BGP to manage route advertisements
- C
Direct Internet Access (DIA) for local breakout of SaaS application traffic
- D
Static routing to simplify route management and reduce overhead
- E
Quality of Service (QoS) policies to prioritize business-critical traffic
Show answer and explanation
Correct answers: A, B, C, E
Explanation
To achieve optimal performance, security, and scalability in an SD-WAN deployment, customer edge devices must be configured with features like IPSec tunnels for secure communication, dynamic routing for scalable route management, Direct Internet Access (DIA) for improved SaaS performance, and QoS policies to prioritize critical traffic. Static routing is not ideal for SD-WAN due to its lack of scalability and automation capabilities.
- A. Correct.
IPSec tunnels are crucial for securing communication between customer edge devices in SD-WAN, ensuring data confidentiality and integrity.
- B. Correct.
Dynamic routing protocols like OSPF or BGP are necessary to exchange routing information and enable scalable and efficient route management in SD-WAN deployments.
- C. Correct.
Direct Internet Access (DIA) allows branch locations to connect directly to the Internet, improving performance for SaaS and cloud applications by reducing latency.
- D. Incorrect.
Static routing, while simple, does not scale well in dynamic environments like SD-WAN and may not support the required level of automation for optimal performance.
- E. Correct.
Quality of Service (QoS) policies help prioritize business-critical traffic over less important traffic, ensuring optimal performance for key applications.