As part of the onboarding process for new switches being added to your data centers, your company uses Juniper Networks' ZTP process. As part of the ZTP process, a script is executed by the devices being onboarded.
Which statement is correct in this scenario?
Zero Touch Provisioning (ZTP):
Juniper Networks' ZTP (Zero Touch Provisioning) process automates the deployment of new devices by allowing them to fetch and execute scripts for configuration and setup as they are powered on and connected to the network.
Supported Scripting Languages:
The Junos OS supports several scripting languages that can be used during the ZTP process:
Shell scripts are often used for general automation tasks.
Python is a widely supported language in Junos, offering powerful scripting capabilities for automating network tasks.
SLAX (Service Logic Execution Environment) is a scripting language specific to Junos, designed to automate configuration tasks and simplify network operations.
Conclusion:
Option D: Correct---Junos ZTP supports Shell, Python, and SLAX, making it the correct choice among the provided options.
Exhibit.
A VXLAN tunnel has been created between leaf1 and Ieaf2 in your data center. Referring to the exhibit, which statement is correct?
Understanding VXLAN Tunneling:
VXLAN (Virtual Extensible LAN) is a network virtualization technology that addresses the scalability issues associated with traditional VLANs. VXLAN encapsulates Ethernet frames in UDP, allowing Layer 2 connectivity to extend across Layer 3 networks.
Each VXLAN network is identified by a unique VXLAN Network Identifier (VNI). In this exhibit, we have two VNIs, 5100 and 5200, assigned to the VXLAN tunnels between leaf1 and leaf2.
Network Setup Details:
Leaf1: Connected to Server1 with VLAN ID 100 and associated with VNI 5100.
Leaf2: Connected to Server2 with VLAN ID 200 and associated with VNI 5200.
Spine: Acts as the interconnect between leaf switches.
Traffic Flow Analysis:
When traffic is sent from Server1 to Server2, it is initially tagged with VLAN ID 100 on leaf1.
The traffic is encapsulated into a VXLAN packet with VNI 5100 on leaf1.
The packet is then sent across the network (via the spine) to leaf2.
On leaf2, the VXLAN header is removed, and the original Ethernet frame is decapsulated.
Leaf2 will then associate this traffic with VLAN ID 200 before forwarding it to Server2.
Correct Interpretation of the Exhibit:
The traffic originating from Server1, which is tagged with VLAN ID 100, will be encapsulated into VXLAN and transmitted to leaf2.
Upon arrival at leaf2, it will be decapsulated, and since it is associated with VNI 5200 on leaf2, the traffic will be retagged with VLAN ID 200.
Therefore, the traffic will reach Server2 tagged with VLAN ID 200, which matches the network configuration shown in the exhibit.
Data Center Reference:
This configuration is typical in data centers using VXLAN for network virtualization. It allows isolated Layer 2 segments (VLANs) to be stretched across Layer 3 boundaries while maintaining distinct VLAN IDs at each site.
This approach is efficient for scaling large data center networks while avoiding VLAN ID exhaustion and enabling easier segmentation.
In summary, the correct behavior, as per the exhibit and the detailed explanation, is that traffic sent from Server1 will be tagged with VLAN ID 200 when it reaches Server2 via leaf2. This ensures proper traffic segmentation and handling across the VXLAN-enabled data center network.
Which parameter is used to associate a received route with a local VPN route table?
Understanding VPN Route Table Association:
In MPLS/VPN and EVPN networks, the route-target community is a BGP extended community attribute used to control the import and export of VPN routes. It associates received routes with the appropriate VPN route tables on the PE (Provider Edge) routers.
Function of Route-Target Community:
The route-target community tag ensures that routes are imported into the correct VRF (Virtual Routing and Forwarding) instance, allowing them to be correctly routed within the VPN.
Conclusion:
Option A: Correct---The route-target community is used to associate received routes with a local VPN route table.
Exhibit.
The exhibit shows the truncated output of the show evpn database command.
Given this output, which two statements are correct about the host with MAC address 40:00:dc:01:00:04? (Choose two.)
Understanding the Output:
The show evpn database command output shows the MAC address, VLAN, active source, timestamp, and IP address associated with various hosts in the EVPN instance.
Analysis of the MAC Address:
Option A: The MAC address 40:00:dc:01:00:04 is associated with the IP address 10.4.4.5, as indicated by the output in the IP address column. This confirms that this host has been assigned the IP 10.4.4.5.
Option D: The active source for the MAC address 40:00:dc:01:00:04 is listed as 00:02:00:00:00:04:00:04:00:00:04:00:04, which indicates that the host is connected via an ESI (Ethernet Segment Identifier) LAG (Link Aggregation Group). This setup is typically used in multi-homing scenarios to provide redundancy and load balancing across multiple physical links.
Conclusion:
Option A: Correct---The host with MAC 40:00:dc:01:00:04 is assigned IP 10.4.4.5.
Option D: Correct---The host is originating from an ESI LAG, as indicated by the active source value.
You are asked to configure telemetry on the OFX Series devices in your data center fabric. You want to use sensors that have a vendor-neutral data model Which type of sensor should you use in this scenario?
Telemetry in Data Centers:
Telemetry allows for real-time monitoring of network devices by collecting and exporting data such as interface statistics, routing table updates, and other key metrics.
Option A: JTI (Junos Telemetry Interface) OpenConfig sensors use a vendor-neutral data model, which is important for ensuring compatibility across different network devices and systems. OpenConfig is an industry-standard model, which facilitates integration with various telemetry collection systems.
Conclusion:
Option A: Correct---OpenConfig sensors provide a vendor-neutral solution for telemetry, ensuring broad compatibility and flexibility in data center environments.
