JNCIP-DC Practice Questions - Juniper JNCIP-DC Professional Data Center Exam

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In Junos EVPN-VXLAN, what is an Integrated Routing and Bridging (IRB) interface in a bridge domain, and why is it needed?

An IRB is a loopback-style interface used exclusively for VTEP source addressing An IRB is a virtual L3 interface bound to a bridge domain that provides the inter-VLAN routing function without requiring a separate physical routed port An IRB is a dedicated hardware forwarding engine for VXLAN encapsulation and decapsulation An IRB replaces the spine switches in ERB designs by routing traffic directly between VTEPs

Correct Answer:

An IRB is a virtual L3 interface bound to a bridge domain that provides the inter-VLAN routing function without requiring a separate physical routed port

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