Exam 350-401 topic 1 question 456 discussion

A and D is correct. The OMP protocol is responsible for: – Distribution of Transport Locators (TLOCs) among network sites in the sd-wan domain. – Distribution of service-side reachability information. – Distribution of service-chaining information. – Distribution of data plane security parameters, VPN labels, and crypto keys. – Distribution of data and application-aware routing (AAR) policies. (Answer E is not correct as OMP is only distribute, not configure data policies) Reference: https://www.networkacademy.io/ccie-enterprise/sdwan/omp-overview

A and D are correct

A and D are correct... by OMP... not vSmart. vSmart does B sure... but we are talking about OMP specifically.

A and C OMP collects data about the underlay infrastructure, including link quality, latency, bandwidth, and other performance metrics. This information is crucial for making intelligent routing decisions based on the current state of the network. OMP uses this data to select the optimal paths for traffic and ensure efficient utilization of available network resources.

https://www.networkacademy.io/ccie-enterprise/sdwan/what-is-sd-wan A and D

p634 in the OCG (under vSmart): "OMP is a proprietary routing protocol similar to BGP that can advertise routes, next hop, keys and policy information needed to establish and maintain the SD-WAN fabric." So for me I'd go for A&D too

OMP is a proprietary routing protocol similar to BGP that can advertise routes, next hops, keys, and policy information needed to establish and maintain the SD-WAN fabric Source: CCNP and CCIE Enterprise Core ENCOR 350-401 Official Cert Guid Page: 634 Chapter: 23 Section: vSmart Controller

in a Cisco SD-WAN solution, the OMP (Overlay Management Protocol) does not deliver crypto keys. The OMP is primarily responsible for advertising network prefixes and their attributes, as well as gathering underlay infrastructure data. Crypto keys, on the other hand, are typically managed and delivered by other components of the SD-WAN solution, such as the control plane and security services. These components handle the encryption and decryption of traffic and the management of cryptographic keys for secure communication within the SD-WAN network. The vSmart controller manages the generation, distribution, and rotation of cryptographic keys used for securing the communication between SD-WAN devices. It ensures that the keys are securely exchanged and synchronized among the devices in the network, allowing for encrypted traffic flow and secure connectivity.

The two functions that are performed by OMP (Overlay Management Protocol) in a Cisco SD-WAN solution are: A. Advertisement of network prefixes and their attributes: OMP advertises the network prefixes and their attributes to all the nodes in the overlay network. These attributes include the path metrics, bandwidth, delay, jitter, and packet loss, which are used to calculate the best path for forwarding the traffic. C. Gathering of underlay infrastructure data: OMP gathers the underlay network infrastructure data, such as the link quality, availability, and bandwidth, from the vEdge routers, which are then used to calculate the best path for forwarding the traffic. This helps in achieving optimal utilization of the available network resources. Therefore, options A and C are correct. Option B is performed by vSmart controllers, option D is performed by vManage, and option E is performed by vEdge routers.

from OCG book: Facilitation of network communication on the SD-WAN fabric, including data plane connectivity among sites, service chaining, and multi-VPN topology information ■ Advertisement of services available to the fabric and their related locations ■ Distribution of data plane security information, including encryption keys ■ Best-path selection and routing policy advertisement.

A & D correct

A & D. B says configuration which is wrong...

Service routes orginated from vEdges/vSmarts Reachability [vRoutes, TLOCs] Security [Encryption Keys] Service routes [Firewall/IDS] Policies throughout the fabric [Data/App-route Policies] https://www.grandmetric.com/knowledge-base/design_and_configure/sd-wan-overlay-management-protocol-omp/

I'm going for A/D because OMP is used for distribution of control and data policies but NOT for configuration what question B. says

I'm going for A/D

The Cisco SD-WAN Overlay Management Protocol (OMP) is the protocol responsible for establishing and maintaining the Cisco SD-WAN control plane. It provides the following services: Orchestration of overlay network communication, including connectivity among network sites, service chaining, and VPN or VRF topologies Distribution of service-level routing information and related location mappings Distribution of data plane security parameters Central control and distribution of routing policy Reference: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/routing/vEdge-20-x/routing-book/m-unicast-routing.html

The answer is A, B