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NEW QUESTION # 98
You are deploying an EVPN-VXLAN overlay. You must ensure that Layer 3 routing happens on the spine devices. In this scenario, which deployment architecture should you use?
Answer: C
Explanation:
* Understanding EVPN-VXLAN Architectures:
* EVPN-VXLAN overlays allow for scalable Layer 2 and Layer 3 services in modern data centers.
* CRB (Centralized Routing and Bridging):In this architecture, the Layer 3 routing is centralized on spine devices, while the leaf devices focus on Layer 2 switching and VXLAN tunneling. This setup is optimal when the goal is to centralize routing for ease of management and to avoid complex routing at the leaf level.
* ERB (Edge Routing and Bridging):This architecture places routing functions on the leaf devices, making it a distributed model where each leaf handles routing for its connected hosts.
* Architecture Choice for Spine Routing:
* Given the requirement to ensure Layer 3 routing happens on the spine devices, theCRB (Centralized Routing and Bridging)architecture is the correct choice. This configuration offloads routing tasks to the spine, centralizing control and potentially simplifying the overall design.
* Explanation:
* With CRB, the spine devices perform all routing between VXLAN segments. Leaf switches handle local switching and VXLAN encapsulation, but routing decisions are centralized at the spine level.
* This model is particularly advantageous in scenarios where centralized management and routing control are desired, reducing the complexity and configuration burden on the leaf switches.
Data Center References:
* The CRB architecture is commonly used in data centers where centralized control and simplified management are key design considerations. It allows the spines to act as the primary routing engines, ensuring that routing is handled in a consistent and scalable manner across the fabric.
NEW QUESTION # 99
You are implementing VXLAN broadcast domains in your data center environment. Which two statements are correct in this scenario? (Choose two.)
Answer: A,B
Explanation:
Layer 2 frames are encapsulated by the source VTEP: In a VXLAN environment, Layer 2 frames (Ethernet frames) are encapsulated by the source VTEP (VXLAN Tunnel Endpoint) into VXLAN packets. The VTEP adds a VXLAN header to the original Layer 2 frame and forwards the encapsulated packet over the IP network to the destination VTEP.
A VXLAN packet does not contain a VLAN ID: VXLAN operates at Layer 2 and encapsulates Ethernet frames within a VXLAN header, but it does not carry a traditional VLAN ID as part of the encapsulated packet. Instead, it uses a VXLAN Network Identifier (VNI) to identify the broadcast domain.
NEW QUESTION # 100
You are designing a DCI solution and want to prevent the extension of BUM traffic and Ethernet Segment information between data centers while still allowing IP prefix reachability. Which EVPN seamless stitching type should you use?
Answer: D
Explanation:
When only Layer 3 reachability between data centers is desired, and Layer 2 extension along with associated BUM traffic and Ethernet Segment routes should not cross the DCI, a Type 5 (IP Prefix route) only interconnect is used. Border leaf devices exchange only EVPN Type 5 routes across the DCI, providing inter-subnet routing between data centers while keeping each data center's Layer 2 broadcast domain isolated.
NEW QUESTION # 101
You are adding a server lo a tenant's network within your data center and must limit access to a specific traffic type within the tenant network without pushing all tenant traffic through a firewall.
What will satisfy this requirement?
Answer: A
Explanation:
* Controlling Traffic Within a Tenant's Network:
* The requirement is to limit access to specific traffic types within a tenant's network without routing all tenant traffic through a firewall. This requires a selective method that can direct specific types of traffic to different paths based on the nature of the traffic.
* Filter-Based Forwarding (FBF):
* FBF is a technique that allows for routing decisions based on filters applied to the traffic, such as matching on source IP addresses, destination IP addresses, or even specific application types (like HTTP or FTP). This allows specific types of traffic to be forwardedto a specific next hop (e.g., a firewall) without affecting the entire traffic flow within the tenant's network.
Conclusion:
* Option B:Correct-Filter-based forwarding allows for granular control of traffic, ensuring that only specific types of traffic within the tenant's network are redirected through a firewall, satisfying the requirement.
NEW QUESTION # 102
Your organization is implementing EVPN-VXLAN and requires multiple overlapping VLAN-IDs.
You decide to use a routing-instance type mac-vrfto satisfy this request.
Which two statements are correct in this scenario? (Choose two.)
Answer: A,B
Explanation:
Host-facing interfaces must be configured using a service-provider style configuration When using MAC-VRF routing instances to support overlapping VLAN IDs, host-facing interfaces need service-provider style (unit with VLAN tagging inside a logical interface). This allows the same VLAN ID to exist in multiple VRFs without conflict.
The routing-instance service type can be VLAN-based
MAC-VRF instances can be VLAN-based, which maps a VLAN to the routing instance for L2 segregation.
NEW QUESTION # 103
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