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NEW QUESTION # 70
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:
* VXLAN Overview:
* VXLAN (Virtual Extensible LAN) is a network virtualization technology that encapsulates Layer
2 Ethernet frames into Layer 3 UDP packets for transmission over an IP network. It allows the creation of Layer 2 overlay networks across a Layer 3 infrastructure.
* Understanding VXLAN Components:
* VTEP (VXLAN Tunnel Endpoint):A VTEP is responsible for encapsulating and decapsulating Ethernet frames into and from VXLAN packets.
* VNI (VXLAN Network Identifier):A 24-bit identifier used to distinguish different VXLAN segments, allowing for up to 16 million unique segments.
* Correct Statements:
* C. Layer 2 frames are encapsulated by the source VTEP:This is correct. In a VXLAN deployment, the source VTEP encapsulates the original Layer 2 Ethernet frame into a VXLAN packet before transmitting it over the IP network to the destination VTEP, which then decapsulates it.
* A. A VXLAN packet does not contain a VLAN ID:This is correct. The VXLAN header does not carry the original VLAN ID; instead, it uses the VNI to identify the network segment. The VLAN ID is local to the switch and does not traverse the VXLAN tunnel.
* Incorrect Statements:
* B. The VNI must match the VLAN tag to ensure that the remote VTEP can decapsulate VXLAN packets:This is incorrect. The VNI is independent of the VLAN tag, and the VLAN ID does not need to match the VNI. The VNI is what the remote VTEP uses to identify the correct VXLAN segment.
* D. The VNI is a 16-bit value and can range from 0 through 16,777,215:This is incorrect because the VNI is a 24-bit value, allowing for a range of 0 to 16,777,215.
Data Center References:
* VXLAN technology is critical for modern data centers as it enables scalability and efficient segmentation without the constraints of traditional VLAN limits.
NEW QUESTION # 71
Click the Exhibit button. You are troubleshooting an IP fabric for your data center. You notice that your traffic is not being load balancing to your spine devices from leaf devices.
Referring to the configuration shown in the exhibit, what must be configured to solve this issue?
Answer: C
Explanation:
You already have BGP multipath turned on (multiple-as;), so the control plane can install multiple equal-cost routes to the spines.
You also created a load-balance policy (load-balance per-packet;).
But the traffic is still not being balanced → because the policy is not applied anywhere.
In Junos, per-packet (or per-flow) load-balancing is not decided in BGP.
It's decided in the forwarding table (FIB) - the place where the actual packet forwarding happens.
That's why Juniper requires you to "attach" your load-balancing policy to the forwarding table.
NEW QUESTION # 72
Click the Exhibit button. You have implemented an EVPN-VXLAN data center. Device server1 must be able to communicate with device server2.
Referring to the exhibit, which two statements are correct? (Choose two.)
Answer: C,D
Explanation:
When routing is done in the spines (CRB model) a IREB must be configured at the spines.
NEW QUESTION # 73
Exhibit.
Given the configuration shown in the exhibit, why has the next hop remained the same for the EVPN routes advertised to the peer 203.0.113.2?
Answer: D
Explanation:
* Understanding the Configuration:
* The configuration shown in the exhibit involves an EVPN (Ethernet VPN) setup using BGP as the routing protocol. The export policy named CHANGE_NH is applied to the BGP group evpn- peer, which includes a rule to change the next hop for routes that match the policy.
* Issue with Next Hop Not Changing:
* The policy CHANGE_NH is correctly configured to change the next hop to 203.0.113.10 for the matching routes. However, the next hop remains unchanged when advertising EVPN routes to the peer 203.0.113.2.
* Reason for the Issue:
* In Junos OS, when exporting routes for VPNs (including EVPN), the next-hop change defined in a policy will not take effect unless the vpn-apply-export parameter is used inthe BGP configuration. This parameter ensures that the export policy is applied specifically to VPN routes.
* The vpn-apply-export parameter must be included to apply the next-hop change to EVPN routes.
* Correct Answer Explanation:
* D. The vpn-apply-export parameter must be applied to this peer:This is the correct solution because the next hop in EVPN routes won't be altered without this parameter in the BGP configuration. It instructs the BGP process to apply the export policy to the EVPN routes.
Data Center References:
* This behavior is standard in EVPN deployments with Juniper Networks devices, where the export policies applied to VPN routes require explicit invocation using vpn-apply-export to take effect.
NEW QUESTION # 74
You must integrate several leaf nodes that do not support the EVPN-VXLAN architecture into your existing EVPN-VXLAN-based IP fabric. In this scenario, which two design considerations would accomplish this task? (Choose two.)
Answer: C,D
Explanation:
Edge-routed bridging allows integrating devices that are not EVPN-VXLAN capable by extending Layer 2 at the edge while using routing toward the fabric, enabling those leaves to connect without participating in the EVPN control plane. A collapsed fabric design can place overlay functions on a subset of capable devices while keeping other leaf nodes operating as simpler routed/bridged nodes, allowing coexistence within the same fabric.
NEW QUESTION # 75
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