I'll choose these:
Centralized distribution of policies throughout the network.
Operates over DTLS/TLS authenticated and secured tunnels.
Provides flexibility and scalability through a hub and spoke architecture.
I think answer is :
1. Uses unique per device feature templates
2. Centralized distribution of policies throughout the network.
3. Operates over DTLS/TLS authenticated and secured tunnels.
Answers are :
1. Centralized distribution of policies throughout the network : via vSmart
2. Operates over DTLS/TLS authenticated and secured tunnels : DTLS or TLS between (vSmart, vEdge, vBond, vManage)
3. Uses unique per device feature templates : via vManage
Manual secure tunnel configuration
False --> Cisco SD-WAN automatise création of tunnels via le orchestrator (vBond, vSmart)
Control plane connections between routers :
False --> control plane is centralised via vSmart, not directly between routeurs.
Provides flexibility and scalability through a hub and spoke architecture
False --> Cisco SD-WAN use dynamique mesh (full-mesh ou partial), not limited at hub & spoke
The answer is this:
centralized distribution of policies throughout the network
operates over DTLS/TLS authenticated and secured tunnels
control plane connections between routers
It can't be 'hub and spoke' because SD-WAN supports on-demand tunneling, full-mesh as well as regional mesh architectures, although one has to be weary about turning those on as mesh topologies with a lot of sites is a lot of overhead.
Control plane connections between routers is facilitated by OMP connections:
Control Plane (OMP):
Routers exchange routes, policies, and TLOCs via vSmart controllers.
Enables centralized management (vManage) but distributed forwarding.
given answer is incorrect
Cisco SD-WAN Characteristics:
- centralized distribution of policies throughout the network
- operates over DTLS/TLS authenticated and secured tunnels
- provides flexibility and scalability through a hub and spoke architecture
Uses unique per device feature templates: This is true. Cisco SD-WAN allows for the creation of feature templates that define the configuration for different device types, streamlining the process.
Centralized distribution of policies throughout the network: Cisco SD-WAN is known for centralized policy management, which means policies are distributed from a central controller to the entire network.
Operates over DTLS/TLS authenticated and secured tunnels: Cisco SD-WAN secures data transport over the network using encrypted tunnels, typically DTLS or TLS.
Unique per device feature templates is possible but is really frowned upon and not recommended as it gets really messy really quickly. for instance, you have a feature template for AAA, a feature template for OSPF routing, a feature template to configure Interfaces, you want to set Global Variables and reuse those templates throughout all your Device templates. If you had a unique feature template for say configuring Interfaces, you'd have a Unique interface template per router which if you run 100, 200, 300 Routers, that's 300 interface feature templates. And keep in mind, a Device Template can use 3, 4, 5, 6 feature templates to complete a configuration. for 200 Routers, 6 templates, that's 1200 unique Feature templates. YOU REALLY want to reuse Feature Templates with global settings As much as possible or it gets complicated and unwieldy VERY quickly.
IMO:
-Centralized distribution of policies throughout the network.
-Operates over DTLS/TLS authenticated and secured tunnels.
-Control plane connections between routers
Default behavior is full mesh:
"In a Cisco SD-WAN network, vEdge routers build a full-mesh topology with vEdge routers in other sites. This is the default behavior, and it means that all devices within a service VPN can communicate with each other."
"Control plane connections: Each Cisco SD-WAN Controller establishes and maintains a control plane connection with each edge router in the overlay network"
- https://networklessons.com/cisco/cisco-sd-wan/cisco-sd-wan-hub-and-spoke-topology#:~:text=In%20a%20Cisco%20SD%2DWAN,can%20communicate%20with%20each%20other.
-https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/system-overview.html#:~:text=The%20major%20components%20of%20the,router%20in%20the%20overlay%20network.
Disregard ^^^^
reading further into the Network Lessons link "a full mesh topology is not always required, and with many vEdge routers, it can even become a scalability issue. This lesson will explain how you can use a centralized policy to configure a hub and spoke topology."
The answers below mine appear correct:
Centralized distribution of policies throughout the network.
Operates over DTLS/TLS authenticated and secured tunnels.
Provides flexibility and scalability through a hub and spoke architecture.
but the hub and spoke architecture is an option, you can deploy using fulll-mesh, the idea of SD-WAN is been flexible always
upvoted 4 times
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