JN0-682 Exam Dumps - Juniper JNCIP-DC Questions and Answers

The Ethernet segment router in EVPN is responsible for preventing BUM traffic from looping back to a multi-homed host. It ensures that BUM traffic is properly handled in scenarios where hosts are connected to multiple leaf nodes.

VXLAN (Virtual Extensible LAN) is an overlay technology designed to support large-scale, multi-tenant environments. Unlike traditional VLANs which are limited to 4096 unique network identifiers, VXLANs can support up to 16 million unique network segments, providing significantly greater scalability. This is achieved through a 24-bit VXLAN Network Identifier (VNI). Additionally, being an overlay technology, VXLAN allows for the creation of virtualized Layer 2 networks over an existing Layer 3 infrastructure.References:Juniper Networks Documentation, VXLAN Overview.

In an EBGP setup with different AS numbers for spine and leaf devices, all BGP routes advertised by a leaf device will be accepted on the spine devices as they are considered external routes. Additionally, a leaf device will accept all BGP routes received from the spine that were originated from another leaf device, enabling full connectivity within the fabric.References:

• EBGP Configuration for IP Fabric

A MAC-VRF (MAC Virtual Routing and Forwarding) instance with a VLAN-bundle service type is used in EVPN-VXLAN architectures. It can be implemented in a bridged overlay architecture where Ethernet segments are bridged across the EVPN-VXLAN network. This setup supports multiple VLAN IDs per Ethernet VPN Instance (EVI), enabling the segregation and transport of traffic from different VLANs over the same EVPN-VXLAN infrastructure.

References

• [EVPN-VXLAN Configuration Guide](https://www.juniper.net/documentation/us/en/software/en/software/junos/evpn-vxlan/topics/topic-map/evpn-overview.htm

In a data center network, the vSRX, which is a virtual firewall provided by Juniper, offers microsegmentation capabilities. Microsegmentation is a method of creating secure zones in data centers and cloud deployments to isolate workloads from one another and secure them individually. vSRX is capable of enforcing security policies at a granular level in virtualized environments, which is essential for effective microsegmentation.References:Juniper Networks vSRX Documentation.

B. Configure virtual-gateway-accept-data under the IRB interface. This configuration is necessary to ensure that the IRB interfaces on the spine devices can handle traffic destined to the virtual gateway IP address.

D. Configure proxy-macip-advertisement under the IRB interface. This enables the advertisement of proxy MAC/IP routes to remote VTEPs. This is essential in a CRB (Centralized Routing and Bridging) topology to ensure that all hosts, including those connected to the spine devices, have reachability to all IRB interface addresses.

References:

• Juniper EVPN Configuration Guide

https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/concept/data-center-interconnect-evpn-vxlan-evpn-mpls-wan-overview.html

In Virtual Chassis Fabric (VCF) configurations, RSTP (Rapid Spanning Tree Protocol) is used among VCF member devices to create a loop-free topology, ensuring efficient and reliable network paths.