SDWAN - Planning & Design

A school district is connecting Student and Faculty traffic across an SD-WAN Service.
Each SD-WAN End Point explicitly maps policies to the Application Flow\Zone matchup as shown above.
Use the following Zones and Zone-wide policies below:

 

Zone Faculty

• IP range = [172.16.0.0/12, 192.168.0.0/23]

• Policies = [Web ¬ policy2, Voice ¬ policy3]

Zone Student

• IP range = [10.2.0.0/16]

• Policies = [Web ¬ policy3]

 

A packet arrives at UNI 2 with the following attributes:

•  Application Flow of Web

• Source IP = 10.2.255.3

What is the result?

• The Zone is Faculty and the policy applied is policy3.

• The Zone is Student and the policy is policy3.

• The packet is discarded.

• The Zone is Student and the policy is policy2.

What is correct about the

SD-WAN Virtual Connection End Point (SWVC EP) 

at Subscriber Network Site C?

• The SD-WAN Edge determines how Application Flows should be handled. If a given Application Flow matches to a TVC, it will bypass the UCS UNI.

• The SD-WAN Edge is the network function between the SD-WAN UNI and one or more Underlay Connectivity Service User to Network Interface (UCS UNIs)

• The SD-WAN Edge network function determines the correct TVC based on routing policy only.

• SD-WAN Edge interfaces cannot be physical connections if they are to carry Tunnel Virtual Connections (TVCs).

A healthcare corporation runs a medical imaging application that requires latency and delay to be below a specific metric.  This application's bandwidth also changes throughout the day and week. The healthcare corporation has two MPLS based, private UCSs and a public Internet connection.  Implementing SD-WAN offers what benefit to this latency, delay, and bandwidth sensitive application?

• Forwarding occurs based on performance metrics

• Applications flows can be forwarded based on next hop. 

• Forwarding occurs based on shortest path. 

• Forwarding occurs based on cost of the UCS. 

A school district is connecting Student and Faculty traffic across
an SD-WAN Service. Each SWVC End Point explicitly
maps policies to the Application Flow\Zone matchup as shown above.
Use the following Zones and Zone-wide policies below:

Zone Faculty

• IP range = [172.16.0.0/12, 192.168.0.0/23]

• Policies = [Web ¬  policy2, Voice ¬  policy3]

Zone Student

• IP range = [10.2.0.0/16]

•  Policies = [Web ¬  policy3]

 

A packet arrives at UNI 3 with the following attributes:

• Application Flow of Office-365

• Source IP = 172.16.30.99

What is the result?

• The Zone is Faculty and the policy applied is policy2.

• The Zone is Student and the policy applied is policy2.

• he Zone is Faculty and the policy applied is policy1

• The packet is discarded.

A MEF SD-WAN Service consists of all of the follow EXCEPT which one?

• One or more Underlay Connectivity Services and corresponding UCS UNIs and UCS End Points and corresponding Service Attributes for each of them.

• One or more SWVC End Points for the SWVC at each of those UNIs, where each SWVC End Point is based on a set of SWVC End Point Service Attributes

• Exactly one SWVC which is based on a set of SWVC Service Attributes.

• One or more SD-WAN UNIs where the Subscriber accesses the SD-WAN Service. Each based on a set of UNI Service Attributes.

Examine the two graphics. Which of the following is correct?

• Both graphics are incorrect.  Only one User to Network Interface (UNI) is allowed per SD-WAN Edge.

• All traffic must belong to the same VLAN or Subnet in order to be accepted at the User to Network Interfaces (UNIs). Both examples are incorrect.

• From the SD-WAN Edge point of view, the two examples are equivalent.

• The top graphic is incorrect while the bottom is acceptable, because traffic from the same Ethernet interface must belong to the same subnet.

A medical center with multiple locations throughout the region has a desire to upgrade their existing MPLS VPN WAN to SD-WAN. Each location needs to have a single UCS and needs to forward medical application data over a backup UCS upon failure.

• 300 Mbps of bandwidth is needed at each location

What UCS should the medical service choose at each location?

• Two DSL from the same provider 

• Gigabit Passive Optical Network (GPON) and LTE from the same service provider

• Hybrid fiber-coaxial from the same provider 

• Two DSL from different service providers 

A financial company involved with making trades on a stock exchange runs applications that are sensitive to latency and delay. The company has a SD-WAN service with two MPLS based private UCS. There are multiple reports from end users complaining of delay and sluggishness when using this application. What should be done to fix this sluggishness and delay issue?

• Add another UCS 

• Request that the SP choose a TVC based on latency performance

• Configure an Internet Breakout at the financial company

• Connect an SD-WAN UNI to an SD-WAN Edge 

What are all the valid shortest paths between
SD-WAN Edge #3 and SD-WAN Edge #4?

• There are no TVCs.

• TVCs A then F
  TVCs C then G

• TVCs A then F
  TVCs C then G
  TVCs D then

• TVCs A then B
  TVCs C then B
  TVCs B then F

An enterprise has many voice over IP applications. An SD-WAN service connects branch offices to the main headquarters. At each branch office, there are at least 2 UCS. At all branch offices, the end users are complaining of audio breaking up intermittently.

 

What should be done to address this issue?

• Connect the branch SD-WAN UNI to the controller.

• Add another UCS to each branch.

• Request that the SP choose a TVC based on latency performance.

• Configure an Internet Breakout at each branch.