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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: VXLAN | 20% | - VXLAN control plane and data plane operation - VXLAN configuration and monitoring - VXLAN troubleshooting |
| Topic 2: Data Center Architecture and Security | 5% | - Security features in data center networks - Traffic protection and segmentation |
| Topic 3: Layer 3 Fabrics | 20% | - IP fabric architecture and design - Fabric scaling and high availability - Routing protocols in IP fabrics |
| Topic 4: Data Center Interconnect | 15% | - EVPN-VXLAN based DCI - Inter-fabric stitching - Layer 2 and Layer 3 interconnect |
| Topic 5: Data Center Deployment and Management | 20% | - Zero Touch Provisioning (ZTP) - Configuration management and automation - Software upgrades and management |
| Topic 6: EVPN-VXLAN Signaling | 20% | - MBGP for EVPN - CRB and ERB architectures - EVPN concepts and route types - MAC learning and symmetric routing |
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NEW QUESTION # 17
You are designing an IP fabric tor a large data center, and you are concerned about growth and scalability. Which two actions would you take to address these concerns? (Choose two.)
Answer: A,D
Explanation:
Design a five-stage Clos IP fabric: A five-stage Clos fabric architecture provides greater scalability and can support larger numbers of spine and leaf switches compared to a traditional three-stage Clos fabric, thus better addressing growth.
Use QFX5700 Series devices as the super spines: The QFX5700 series is a high-performance switch suitable for use as super-spines in large-scale data center IP fabrics. These devices offer high throughput and low latency, making them ideal for managing the large amount of traffic typically seen in high-growth environments. Using such devices for the super-spine layer will support scalability and performance as the data center grows.
NEW QUESTION # 18
Host A is connected to vlan 100 on lead. Host B is connected to vlan 200 on leaf1. Host A and Host B ate unable to communicate. You have reviewed the touting and your hosts have the correct default route (.1) Referring to the exhibit, which two commands will solve the problem? (Choose two.)
Answer: C,D
Explanation:
VLAN 100 (BLUE) does not have an IRB interface configured, meaning there is no Layer 3 gateway for hosts in VLAN 100. Adding an IRB.100 interface with an IP address will allow routing between VLAN 100 and VLAN 200.
Even after configuring the IRB interface for VLAN 100, you need to bind it to VLAN 100 so that the switch correctly associates VLAN 100 traffic with the IRB. This ensures that the VLAN can route traffic through the correct Layer 3 gateway.
NEW QUESTION # 19
You are deploying an IP fabric using EBGP and notice that your leaf devices are advertising and receiving all the routes. However, the routes are not installed in the routing table and are marked as hidden.
Which two statements describe how to solve the issue? (Choose two.)
Answer: A,B
NEW QUESTION # 20
Which three EVPN split horizon rules will a VTEP implement when receiving BUM traffic from a local host? (Choose three.)
Answer: C,D,E
Explanation:
When a VTEP receives BUM traffic from a local host, it performs normal flooding behavior within the broadcast domain. The frame is replicated to other local interfaces in the same VLAN. It is also replicated to remote VTEPs participating in the same VLAN/VNI for inter-VTEP flooding.
Split-horizon logic prevents sending the flooded frame back out the interface toward the originating host.
NEW QUESTION # 21
A local VTEP has two ECMP paths to a remote VTEP
Which two statements are correctwhen load balancing is enabled in this scenario? (Choose two.)
Answer: C,D
Explanation:
* Load Balancing in VXLAN:
* VXLAN uses UDP encapsulation to transport Layer 2 frames over an IP network. For load balancing across Equal-Cost Multi-Path (ECMP) links, various fields in the packet can be used to ensure even distribution of traffic.
* Key Load Balancing Fields:
* C. The source port in the UDP header is used to load balance VXLAN traffic:This is correct.
The source UDP port in the VXLAN packet is typically calculated based on a hash of the inner packet's fields. This makes the source port vary between packets, enabling effective load balancing across multiple paths.
* D. The inner packet fields are used in the hash for load balancing:This is also correct. Fields such as the source and destination IP addresses, source and destination MACaddresses, and possibly even higher-layer protocol information from the inner packet can be used to generate the hash that determines the ECMP path.
* Incorrect Statements:
* A. The inner packet fields are not used in the hash for load balancing:This is incorrect as the inner packet fields are indeed critical for generating the hash used in load balancing.
* B. The destination port in the UDP header is used to load balance VXLAN traffic:This is incorrect because the destination UDP port in VXLAN packets is typically fixed (e.g., port 4789 for VXLAN), and therefore cannot be used for effective load balancing.
Data Center References:
* Effective load balancing in VXLAN is crucial for ensuring high throughput and avoiding congestion on specific links. By using a combination of the source UDP port and inner packet fields, the network can distribute traffic evenly across available paths.
NEW QUESTION # 22
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