To achieve communication between Barcelona and Paris through the London site, a control policy needs to be configured to force traffic from these two sites to pass through the London site. This setup involves manipulating the routing information such that London becomes a transit hub for traffic between Barcelona and Paris.
Understanding the Policy Requirements:
Centralized Policy: This type of policy is applied at the controller level and affects multiple devices in the SD- WAN fabric. It allows the control of routing behavior across the entire network.
Route Policy: Specifically, a route policy will be used to set the preferred path for traffic between sites, ensuring that it passes through London.
Option Analysis:
Option A: Shows the configuration of a centralized policy with a focus on route policy, which is necessary to achieve the desired traffic flow manipulation.
Other Options: Do not provide the necessary centralized policy or route policy configurations that are needed to control the routing paths between the sites.
Configuration Details:
Centralized Policy: Define the policy under the centralized policy section in the vManage GUI.
Route Policy: Create and apply a route policy that specifies the desired routing behavior for traffic between Barcelona and Paris, ensuring it routes through London.
Cisco SD-WAN Control Policy Configuration Guide
Cisco SD-WAN Centralized Policy Documentation