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NEW QUESTION # 149
In a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, which of the following fields is not carried in BGP EVPN Type 2 routes?
Answer: B
Explanation:
BGP EVPN Route Types in VXLAN:
BGP EVPN Type 2 Route (MAC/IP Advertisement Route)
Used for host reachability advertisement.
Carries MAC and IP address information of endpoints.
Does not carry an IP Prefix field (Type 5 routes handle prefixes).
Correct Explanation of Answer Choices:β
IP Address (B) is included - Used for host mobility and reachability.β
L3VNI (C) is included - Used for Layer 3 VXLAN routing.β
L2VNI (D) is included - Used for Layer 2 VXLAN bridging.β IP Prefix (A) is not included in Type 2 routes - It is part of EVPN Type 5 routes for prefix advertisement.
Reference from Huawei HCIE-Datacom Documentation:
Huawei VXLAN BGP EVPN Configuration Guide - Type 2 vs. Type 5 Routes
HCIE-Datacom Training Material - VXLAN Overlay Networks and BGP EVPN
NEW QUESTION # 150
Which of the following can be used to transmit traffic to a VXLAN network and implement intra-subnet communication on the same VXLAN network?
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
AnNVE (Network Virtualization Edge) interfaceis responsible for connecting physical or virtual devices to a VXLAN network. It functions as theVTEP (VXLAN Tunnel Endpoint)and supportsencapsulation and decapsulation of VXLAN packets.
Layer 2 VXLAN gateway (D)is used for intra-subnet communication, but theNVE interfaceis the actual point where traffic enters the VXLAN network.
Layer 3 VXLAN gateway (A)is used for inter-subnet communication.
VLANIF interface (C)is used for VLAN-based communication, not directly for VXLAN.
Therefore, theNVE interface (B)is the correct answer as it serves as thetraffic ingress and egress point for the VXLAN network.
NEW QUESTION # 151
If a DR needs to be elected between multicast routers running PIM-SM to be responsible for the sending and receiving of source or member multicast data, which one is described correctly below for the DR election rule?
Answer: D
NEW QUESTION # 152
The following figure shows the inter-AS MPLS L3VPN Option C (Solution 2). ASBR-PE2 is connected to CE3 and runs eBGP.
To enable all CEs to communicate with each other, which of the following address families must peer relationships be enabled in the BGP process of ASBR-PE2?
Answer: B,C
Explanation:
Understanding Inter-AS MPLS L3VPN Option C
πΉ MPLS L3VPN provides Layer 3 VPN services over an MPLS backbone by using BGP to exchange VPN routes.
πΉ Inter-AS MPLS L3VPN Option C (Carrier-to-Carrier Model) works as follows:
ASBRs (Autonomous System Boundary Routers) exchange VPNv4 routes using MP-BGP.
ASBRs do NOT store VPN routing tables. Instead, they advertise labeled IPv4 routes to enable inter-AS forwarding.
How ASBR-PE2 Enables Inter-AS Communication?
β
VPNv4 Address Family (Answer A - Required)
Used to exchange MPLS VPN routes between PE routers.
MP-BGP (Multiprotocol BGP) exchanges VPNv4 prefixes between ASBR-PE1 and ASBR-PE2.
β
Unicast BGP Address Family (Answer D - Required)
Required to exchange IPv4 labeled routes between ASBRs.
Ensures MPLS label forwarding between AS100 and AS200.
β BGP-LS Address Family (Answer B - Not Required)
BGP-LS (BGP Link-State) is used for SDN controllers to learn topology information.
It is not required for Inter-AS MPLS L3VPN.
β VPN Instance Unicast Address Family (Answer C - Not Required)
This is used for PE-CE communication but is not required between ASBRs.
Why is the Answer A, D?
β
VPNv4 routes enable inter-AS VPN communication.
β
IPv4 unicast routes are required for ASBR-PE2 to forward packets across AS boundaries.
Real-World Application:
Service Provider Networks: Used in carrier-to-carrier MPLS VPN deployments.
Enterprise WAN Interconnection: Enables multi-AS MPLS VPN connectivity for large enterprises.
β
Reference: Huawei HCIE-Datacom Guide - Inter-AS MPLS L3VPN Option C (Carrier-to-Carrier Model)
NEW QUESTION # 153
Which of the following number sequences can be matched by the regular expression 100.$?
Answer: C,D
Explanation:
Comprehensive and Detailed In-Depth
The regular expression 100.$ can be broken down as follows:
100: Matches the exact sequence of digits "100".
. (dot): Represents any single character.
$: Indicates the end of the line.
Therefore, the pattern 100.$ matches any four-character sequence that starts with "100" and ends with any single character.
1000 (A): Matches because it has four digits, starting with "100" and ending with "0".
1001 (B): Matches because it has four digits, starting with "100" and ending with "1".
10000 (C): Does not match because it has five digits.
100 (D): Does not match because it only has three digits.
Reference:
Huawei Regular Expression Configuration Guide
Networking Regex Matching Principles
NEW QUESTION # 154
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