Huawei H12-891_V1.0 Exam Dumps

Comprehensive and Detailed In-Depth

The correct configuration is qos car inbound cir 50000 pir 100000.

CIR (Committed Information Rate): The guaranteed minimum bandwidth, set to 50 Mbit/s (50000 kbps).

PIR (Peak Information Rate): The maximum allowable bandwidth, set to 100 Mbit/s (100000 kbps).

This configuration ensures that during peak hours, the minimum guaranteed bandwidth is 50 Mbit/s, while during off-peak hours, the bandwidth can increase to a maximum of 100 Mbit/s. The settings align with the carrier's requirements for dynamic bandwidth allocation based on network load.

Huawei HCIE Datacom Official Certification Guide

Huawei QoS Configuration and Implementation Guide

Understanding SR-MPLS Prefix and Adjacency Segments

What Are Prefix Segments?

Globally unique labels assigned to network prefixes.

Advertised via IGP (OSPF, IS-IS) with SRGB (Segment Routing Global Block).

What Are Adjacency Segments?

Locally significant labels assigned to direct router adjacencies.

Not globally visible---only used within a local router's LFIB (Label Forwarding Information Base).

Why is the Answer FALSE?

Prefix Segments are globally unique, but Adjacency Segments are only locally significant.

Adjacency Segments are not distributed globally through IGP.

Only Prefix Segments use globally advertised SRGB labels.

Real-World Application:

Segment Routing Traffic Engineering (SR-TE): Uses prefix segments for global routing and adjacency segments for local path steering.

5G Core Networks: Uses SR-MPLS with Prefix SIDs for scalable path selection.

Reference: Huawei HCIE-Datacom Guide -- SR-MPLS Prefix & Adjacency Segments

The command port-isolate enable is used on Huawei switches to completely isolate traffic at both Layer 2 and Layer 3 between different interfaces within the same VLAN. This isolation prevents any communication between isolated ports---even if they belong to the same subnet or VLAN---making it a critical security feature in multi-tenant environments.

Usage Context:

Often used in shared service or hotel network scenarios.

Can be applied in access port configurations.

Does not require additional VLAN creation or private VLAN features.

Huawei Datacom Reference:

'To completely isolate Layer 2 and Layer 3 communication between interfaces in the same VLAN, run the port-isolate enable command under the interface view.'

(Source: HCIE-Datacom Study Guide V3.0 -- Chapter: VLAN & Security Technologies, Section: Port Isolation)

In Huawei's CloudCampus Solution, when static IPsec VPN is used for WAN interconnection, the following devices are capable of acting as egress gateways for encrypted tunnels:

Access Point (AP)

Router

Switch

This is based on Huawei's CloudCampus architecture, where all three device types can support VPN tunnel termination depending on the deployment size and use case.

Huawei Datacom Reference:

'In static IPsec VPN networking scenarios, egress devices can be APs, Routers, or Switches depending on the deployment model. This allows flexibility for small, medium, and large-scale branches.'

(Source: HCIE-Datacom V1.0 Training Guide -- WAN Interconnection and VPN Chapter)

Huawei's user access authentication configuration includes the following components:

AAA scheme: Defines how users are authenticated (local, RADIUS, HWTACACS, etc.).

Domain: Groups users and associates them with an AAA scheme.

Access profile: Defines access control rules like 802.1X, MAC, Portal, or multi-mode authentication.

Correct workflow:

Bind the authentication profile (which references the access profile) to the user access interface.

Not the other way around.

Incorrect statement: