Huawei H35-210_V2.5 Exam Dumps

Traffic Classification Overview :

Traffic classification is used to identify and prioritize different types of traffic on the network.

The OLT (Optical Line Terminal) supports various methods for classifying traffic based on VLAN tags, packet priorities, and service encapsulation.

Supported Technologies :

User-side VLAN : Classifies traffic based solely on VLAN tags. This is a basic method but does not consider packet priority or service type.

VLAN + user-side packet priority : Combines VLAN tags with packet priority (e.g., DSCP or 802.1p values) for more granular classification.

VLAN + user-side service encapsulation : Combines VLAN tags with service-specific encapsulation, but this is less commonly used.

User-side service encapsulation : Focuses only on service encapsulation without considering VLAN tags or packet priority.

Why B?

The combination of VLAN tags and user-side packet priority provides the most effective and widely supported traffic classification method. It allows the OLT to classify traffic based on both VLAN membership and priority levels, ensuring efficient QoS (Quality of Service) management.

Thus, the correct answer is B .

HCIA Huawei ACCESS Official Documentation , Chapter: Traffic Classification.

GPON Traffic Management by Huawei.

VLAN link types define how VLAN traffic is handled on switch ports. The three common VLAN link types are:

Access Ports :

Used to connect end devices (e.g., PCs, printers) to the switch.

An access port belongs to only one VLAN and carries untagged traffic for that VLAN.

Example: A PC connected to an access port in VLAN 10 sends and receives untagged traffic.

Trunk Ports :

Used to connect switches or routers to carry traffic for multiple VLANs.

Trunk ports tag traffic with VLAN IDs using IEEE 802.1Q encapsulation.

Example: A trunk port connecting two switches carries tagged traffic for VLANs 10, 20, and 30.

Hybrid Ports :

A hybrid port can carry both tagged and untagged traffic.

It is flexible and can be used for scenarios where a mix of tagged and untagged traffic is required.

Example: A hybrid port might send untagged traffic for VLAN 10 and tagged traffic for VLAN 20.

Mix :

This is not a standard VLAN link type and does not exist in Ethernet switch configurations.

Thus, the correct answers are A (Trunk) , B (Access) , and C (Hybrid) .

HCIA Huawei ACCESS Official Documentation , Chapter: VLAN Link Types.

IEEE 802.1Q VLAN Tagging Standards .

ONT Line Profile Overview :

An ONT line profile defines the mapping and configuration of services for an ONU (Optical Network Unit) on the OLT.

Key Parameters :

Mapping between GEM ports and data packets : Specifies how data packets are mapped to GEM (GPON Encapsulation Method) ports for transmission.

GEM ports : Logical ports used to encapsulate and transmit data over the GPON network.

T-CONT (Transmission Containers) : Allocates upstream bandwidth for different service flows.

Number of Ethernet ports on the ONT : This is a hardware attribute of the ONT and is not defined in the line profile.

Why A, B, C?

These parameters are directly related to the configuration of services and are included in the ONT line profile.

The number of Ethernet ports is unrelated to the line profile and is determined by the ONT hardware.

Thus, the correct answers are A, B, C .

HCIA Huawei ACCESS Official Documentation , Chapter: ONT Line Profiles.

GPON Service Configuration Guide by Huawei.