Huawei H12-891_V1.0 Exam With Confidence Using Practice Dumps

When port security is enabled and the maximum number of learned MAC addresses is reached, the switch can trigger multiple security actions depending on configuration:

Discard packets with unknown source MACs

Generate alarms

Shut down the port (set to error-down)

Do all the above combined (default behavior)

The most comprehensive and commonly configured behavior is error-down + alarm generation, which corresponds to Option D.

Exact Extract - Huawei HCIE-Datacom Switching Guide:

“When the MAC address limit is reached on a port with port security enabled, the system can generate alarms and set the port to error-down state based on security policies.”

The incorrect statement is Option C, which says “A site can only belong to only one VPN.” This is false because a single site can belong to multiple VPNs if needed. For example, in some enterprise designs, a site may be part of both the Finance VPN and the Management VPN by configuring multiple routing instances (VRFs) and policies accordingly.

Exact Extract - HCIE-Datacom VPN Technologies Chapter:

“A site may be associated with one or more VPNs, depending on business requirements. This is achieved through VRF and route-target configurations.”

The free mobility solution in Huawei iMaster NCE-Campus allows:

Centralized policy management via the controller

Security group-based policies, decoupled from IPs/VLANs

Automatic policy delivery, no need to configure repeatedly per device

Dynamic mapping of users and IPs via security group subscriptions

Exact Extract - Huawei iMaster NCE-Campus Solution White Paper:

“Free mobility uses security groups and centralized control to enable consistent policy enforcement, avoiding repetitive configurations and simplifying policy management.”