What is the purpose of 'vpn 0' in the configuration template when onboarding a WAN Edge node?
Click on the arrows to vote for the correct answer
A. B. C. D.C.
https://sdwan-docs.cisco.com/Product_Documentation/Software_Features/SD-WAN_Release_17.1/04Segmentation/02Configuring_Segmentation_In a Cisco SD-WAN solution, a VPN (Virtual Private Network) is created to connect the different devices in the network. Each VPN in a Cisco SD-WAN network is identified by a unique VPN ID, which is an integer value that ranges from 0 to 65535.
When onboarding a WAN Edge node, a configuration template is applied to the device that includes various settings, including the VPN configuration. The vpn 0 configuration in the template refers to VPN 0, which is a special VPN used for carrying control traffic within the SD-WAN network.
The purpose of VPN 0 is to provide a secure, encrypted channel for control traffic to flow between the different components of the SD-WAN network, including the vSmart controllers, vEdge routers, vManager, and vBond orchestrator. Control traffic includes routing updates, policy configuration, and other management traffic that is critical for the operation of the SD-WAN network.
Option A is incorrect because it only mentions the control traffic between vSmart and vEdge, but does not include vManager or vBond. Option B is incorrect because it only mentions the control traffic between vSmart and vEdge, and vSmart and vBond, but does not include vManager. Option C is the correct answer because it mentions the use of DTLS or TLS (Transport Layer Security) for secure control traffic between all the components in the network. Option D is incorrect because it refers to out-of-band management traffic, which is not the purpose of VPN 0.