QUESTION: 5

Exhibit.

You connect two single-homed servers using Juniper Apstra as shown in the exhibit. You are using the ERB design blueprint with two virtual networks in a common routing zone. In this scenario, which two types of VXLAN tunnels will be automatically created by the EVPN control plane? (Choose two.)

EVPN signaled route Type-8 VXLAN tunnels
EVPN signaled route Type-3 VXLAN tunnels
EVPN signaled route Type-6 VXLAN tunnels
EVPN signaled route Type-2 VXLAN tunnels

Answer(s): B,D

Explanation:

According to the Juniper documentation1, EVPN route Type-3 is used to advertise the IP address of the VTEP and the VNIs that it supports. This allows the VTEPs to discover each other and form VXLAN tunnels for the VNIs that they have in common. EVPN route Type-2 is used to advertise the MAC and IP addresses of the hosts connected to the VTEPs. This allows the VTEPs to learn the MAC-to-IP bindings and the MAC-to-VTEP mappings for the hosts in the same VNI. Therefore, these two types of VXLAN tunnels will be automatically created by the EVPN control plane when using Juniper Apstra with the ERB design blueprint and two virtual networks in a common routing zone.

Reference:

Example: Configure an EVPN-VXLAN Centrally-Routed Bridging Fabric

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QUESTION: 6

In the Juniper Apstra design phase, which object dictates port count, port speed, and how the ports would be used?

logical devices
rack type
network devices
interface map

Answer(s): D

Explanation:

Interface maps are objects that map interfaces between logical devices and physical hardware devices in the Juniper Apstra design phase. They dictate port count, port speed, and how the ports would be used for achieving the intended network configuration rendering. Interface maps also allow you to select device ports, transformations, and interfaces, provision breakout ports, and disable unused ports. For more information, see Interface Maps (Datacenter Design).

Reference:

Interface Maps (Datacenter Design)
Design
Interface Maps Introduction

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QUESTION: 7

You want to keep virtual networks isolated from each other within the Juniper Apstra system. In this scenario, what are three ways to accomplish this task? (Choose three.)

Disable IPv4 connectivity when creating the virtual network within the same Routing Zone.
Enable Security Policy for virtual networks in the same Routing Zone.
Disable Route Target exports when creating the Routing Zones.
Use Connectivity Templates to block access within the same Routing Zone.
Put each network in different Routing Zones.

Answer(s): B,D,E

Explanation:

To keep virtual networks isolated from each other within the Juniper Apstra system, you can use one or more of the following methods:
Enable Security Policy for virtual networks in the same Routing Zone. This allows you to define rules that control the traffic flow between different virtual networks within the same routing zone. You can specify the source and destination virtual networks, the protocol, the port, and the action (allow or deny) for each rule. The security policy is applied on the ingress interface of the leaf devices1. Use Connectivity Templates to block access within the same Routing Zone. This allows you to customize the connectivity between different racks within the same routing zone. You can create templates that define the link type, the routing protocol, and the access control list (ACL) for each rack pair. The ACL can be used to filter the traffic based on the source and destination IP addresses, the protocol, and the port2.
Put each network in different Routing Zones. This allows you to create logical boundaries between different virtual networks based on the route target (RT) values. A routing zone is a collection of virtual networks that share the same RT for importing and exporting routes. Virtual networks in different routing zones do not exchange routes with each other, unless you configure remote EVPN gateways to connect them3.

Reference:

Security Policy
Connectivity Templates
Routing Zones

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QUESTION: 8

Exhibit.

The 10.100.0.0/16 route is being advertised into your BGP IP fabric. ECMP load balancing has been properly enabled on all devices
In this scenario, how many routes will the leaf device in AS 65000 receive for the 10.100.0.0/16 prefix?

Answer(s): A

Explanation:

The leaf device in AS 65000 will receive three routes for the 10.100.0.0/16 prefix, one from each spine device in AS 65001, AS 65002, and AS 65003. Since ECMP load balancing is enabled, the leaf device will install all three routes in its routing table and distribute the traffic among them. The other options are incorrect because:
B) 1 is wrong because the leaf device will not receive only one route for the prefix. It will receive multiple routes from different spine devices and use ECMP to load balance among them. C) 2 is wrong because the leaf device will not receive only two routes for the prefix. It will receive three routes from three spine devices, as explained above. D) 4 is wrong because the leaf device will not receive four routes for the prefix. It will receive three routes from three spine devices, as explained above. The fourth spine device in AS 65004 is not directly connected to the leaf device and will not advertise the prefix to it.

Reference:

IP Fabric Underlay Network Design and Implementation
BGP Multipath load sharing iBGP and eBGP
ECMP Load Balancing

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Free JN0-480 Exam Braindumps (page: 2)

QUESTION: 5

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QUESTION: 6

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QUESTION: 7

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QUESTION: 8

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