H12-891_V1.0 Exam Dumps : HCIE-Datacom V1.0

GRE (Generic Routing Encapsulation)supports encapsulation of many protocol types:

SupportsIPv4 and IPv6 unicastencapsulation —✅

Doesnot support IPv6 broadcastencapsulation. GRE doesn’t natively handle multicast or broadcast IPv6 traffic well —❌

It is a lightweight tunneling protocol and relativelyeasy to deploy, placing minimal overhead on devices —✅

Correct answer: C. GRE can encapsulate IPv6 broadcast packets— is incorrect.

Huawei’sSD-WAN solutionoffers a full suite of application optimization technologies, including:

Application identification: Uses DPI and traffic signatures to identify applications.

Intelligent traffic steering: Dynamically routes traffic based on application type and real-time link performance.

WAN optimization: Reduces latency, deduplicates traffic, and optimizes throughput for key apps.

QoS: Prioritizes critical applications and ensures bandwidth guarantees.

All listed options are part of the Huawei SD-WAN solutionfor optimizing user experience and application performance.

Correct answers: A, B, C, D

Comprehensive and Detailed In-Depth Explanation:

In VXLAN encapsulation, the data frame is encapsulated as follows:

Original Ethernet Frame:The data packet to be encapsulated.

VXLAN Header:Contains the VXLAN Network Identifier (VNI) and other information.

UDP Header:VXLAN usesUDP (User Datagram Protocol)to transport the encapsulated data over an IP network.

Outer IP Header:Provides the source and destination IP addresses of the VTEPs.

Therefore, theUDP header(C) isencapsulated between the outer IP header and the VXLAN header.