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300-415 · Question #116

Which policy blocks TLOCs from remotes and allows TLOCs from the data center to form hub-and-spoke peering?

The correct answer is D. centralized control policy. A centralized control policy is used to block TLOCs from remote sites while allowing TLOCs from the data center, thus enforcing a hub-and-spoke peering model.

Policies

Question

Which policy blocks TLOCs from remotes and allows TLOCs from the data center to form hub-and-spoke peering?

Exhibit

300-415 question #116 exhibit

Options

  • Alocalized control policy
  • Bcentralized data policy
  • Ccentralized data policy
  • Dcentralized control policy

How the community answered

(29 responses)
  • A
    17% (5)
  • B
    3% (1)
  • C
    10% (3)
  • D
    69% (20)

Why each option

A centralized control policy is used to block TLOCs from remote sites while allowing TLOCs from the data center, thus enforcing a hub-and-spoke peering model.

Alocalized control policy

Localized control policies are applied on individual WAN Edge devices and affect local routing and forwarding, not the overall TLOC advertisement and visibility across the fabric.

Bcentralized data policy

Centralized data policies focus on data plane forwarding decisions like firewalling, QoS, or path selection, not on manipulating TLOC advertisements or control plane topology.

Ccentralized data policy

This option is a duplicate of B and is incorrect for the same reasons.

Dcentralized control policyCorrect

Centralized control policies operate on the control plane via vSmart controllers and can filter or modify OMP routes and TLOC information before distribution. By specifically blocking TLOCs from remote sites and permitting only those from data centers, this policy effectively constructs a hub-and-spoke topology.

Concept tested: SD-WAN centralized control policy for TLOC filtering

Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/m-centralized-control-policy.html

Topics

#Centralized Control Policy#TLOCs#Hub-and-Spoke Topology#SD-WAN Policies

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