H12-891_V1-0 practice question 19 of 35

VPN instances are also known as VPN routing forwarding tables (PN Routing and Forwarding table), and there are multiple route forwarding tables on the PE, including a public route forwarding table, one or more VPN route forwarding tables, and VPNv4 Route forwarding table.

Full set: 607 questions
Answer options
A: False
B: TRUE Correct answer
Correct Answer:
B. TRUE
Explanation

The statement is false. It incorrectly categorizes the "VPNv4 Route forwarding table." A PE router maintains a public routing table and forwarding table, and one or more VPN routing and forwarding tables (VRFs). However, the VPNv4 table is a BGP Routing Information Base (RIB), not a Forwarding Information Base (FIB) or "forwarding table." The VPNv4 RIB is part of the control plane, used by MP-BGP to store and exchange VPN routing information between PE routers. Packet forwarding (data plane) uses the FIB derived from the specific VRF, not the VPNv4 table directly.

Why Incorrect

A. The statement is presented as a True/False question with options A/B. As the statement is technically incorrect due to the misclassification of the VPNv4 table, it is False (B).

References

1. Huawei NE40E & NE80E V800R011C10 Product Documentation, MPLS Configuration Guide, Section: BGP/MPLS IP VPN Configuration > BGP/MPLS IP VPN Fundamentals > Route Exchange. This section distinguishes between the roles of the VRF table for forwarding within a VPN and the BGP VPNv4 table for exchanging routes between PEs.

2. Huawei Datacom Certification HCIP-Datacom-Core Technology V1.0 Training Material, Section: BGP/MPLS IP VPN Fundamentals. The material explains that a PE maintains a public routing table, a VRF table for each VPN user, and a BGP VPNv4 routing table. It clarifies the VPNv4 table is for control plane route advertisement.

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