Huawei HCIA Datacom Certification Training - Theory and Labs

Learn data communication and the data transfer process across networks. Examine common network devices, network types and topologies, and Huawei VRP basics with CLI commands for Datacom devices.

Explore the basics of data communication networks and how data transfers occur across devices. Learn about payloads, packets, headers, tails, encapsulation, decapsulation, gateways, routers, terminals, and transmission media.

Identify core network devices and their functions, including routers, layer two and layer three switches, firewalls, access controllers and access points, servers, printers, and user equipment.

Classify networks by area of coverage into personal area network, local area network, metropolitan area network, and wide area network, with Bluetooth and Wi-Fi examples.

Explore network topology types and their features, including star, bus, ring, tree, full mesh, partial mesh, and hybrid designs, with notes on advantages and disadvantages.

Learn the Huawei VRP versatile routing platform, the datacom device operating system, and master basic CLI commands, file system operations, and command views for configuring routers, switches, and firewalls.

Explore network reference models, including osi and tcp/ip, and learn their layers. Master encapsulation and decapsulation, arp, tcp and udp, ports, cables, and network devices.

Explore the OSI seven-layer network reference model, its purpose and functions, how the OSI and TCP/IP models handle data formats, and how vendors interoperate to enable end-to-end data communication.

Master the seven OSI layers and their functions, from the physical layer's bit synchronization to the application layer protocols, covering frames, MAC and IP addressing, routing, and encapsulation.

Master the four-layer TCP/IP model—application, host-to-host, internet, and network access—mapping to OSI, encapsulation, and protocols like TCP, IP, IPv4/IPv6, ICMP, ARP, UDP, HTTP, SMTP, DNS, FTP, SSH.

Explore the application layer as the interface between user applications and network services, and examine common protocols such as ftp, ssh, telnet, smtp, dns, dhcp, http, https, ntp, snmp, ldap.

Explore tcp as a connection-oriented transport layer protocol, covering three-way handshake, sequence and acknowledgement numbers, sliding window, port numbers, and tcp header fields.

Master UDP on the transport layer as a connectionless, unreliable protocol ideal for real-time streaming, multicast, and routing updates, with four header fields: source port, destination port, length, checksum.

Compare tcp and udp transport layer protocols, detailing tcp's connection oriented reliability, ordering, and handshakes against udp's connectionless speed, with usage notes for email, web, video streaming, and dns.

Explore the network layer and its protocols, including IPv4/IPv6 and ICMP. Learn how routing tables, logical addressing, and encapsulation enable packet forwarding and diagnostics.

Explore the data link layer, its framing, physical addressing with MAC addresses, and how Ethernet frames enable node-to-node communication, including ARP mapping of IP to MAC addresses and switch learning.

Explore the physical layer of the OSI model, covering transmission media, electrical and mechanical interfaces, connectors like RJ-45, wired and wireless options, and duplex and topology concepts.

Explore data transfer through encapsulation and decapsulation, adding source and destination addresses, headers from application to physical layers, and using TCP, IP, and Ethernet headers to ensure delivery.

Explore the data link layer functions and network layer protocols, including IPv4, IPv6, and ICMP, plus IPv4 addressing concepts. Practice subnetting, network planning, and configuring IP addresses on Huawei routers.

Explore the network layer, IP addressing and routing, and data encapsulation from segments to frames, with notes on IPv4, ICMP, and the OSI and TCP/IP models.

Explore the IPv4 header, its fields such as version, header length, TTL, total length, identification, flags, fragmentation offset, protocol, checksum, source and destination addresses, and options, plus fragmentation concepts.

Learn IPv4 addressing as a 32-bit, dotted decimal identity with four octets (0–255), defining the network and host parts via a subnet mask to forward packets.

Explore IPv4 address classifications (A–E), ranges, default subnet masks, network and host portions, private vs public, and how to calculate network and broadcast addresses and usable hosts.

Explore IPv4 addressing and subnetting, from classful masks to VLSM, learning how to borrow bits, design subnets, and optimize address usage for scalable networks.

Explore ICMP, the Internet Control Message Protocol, for error reporting and diagnostics in IP networks, including ping and traceroute, with key message types like echo and destination unreachable.

Configure IP addresses on Huawei devices in a lab, assign static IPs and gateways, then document interface descriptions. Verify connectivity with ping, ARP, and MAC address learning.

Explore IP routing basics, routers, and routing tables, with static versus dynamic routing on Huawei devices. Learn to configure static routes and analyze routing for efficient data forwarding.

Explore how routers forward IP packets across subnets and maintain IP routing tables. Discover how direct, static, and dynamic routes provide destination-based forwarding through next-hop and outbound interfaces.

Master static routing by manually configuring fixed paths in the routing table, setting destination, mask, and next hop or interface, including default routes for unmatched destinations.

Adopt dynamic routing to replace manual static routing, scale networks, and adapt to changes automatically using protocols like OSPF, ISIS, and BGP.

Demonstrate static routing on Huawei devices using a three-router topology with RTA RTB RTC. Configure interfaces, set hostnames, add static routes with next-hop, and verify bidirectional reachability.

This lecture explains how routers pick the optimal path using longest prefix match, route preference, and metrics, forwarding packets to the best next hop from the routing table.

Compare static and dynamic routing, highlighting scalability and flexibility, and learn the basic OSPF concepts, working principles, and how to configure and troubleshoot OSPF on Huawei devices.

Explore OSPF, a dynamic link-state routing protocol for IPv4 and IPv6. See how neighbor and adjacency exchange LSAs in LSDB and how SPF uses cost to find shortest path.

Divide the network into OSPF areas, with a backbone area (area zero) connecting non-zero areas to reduce LSDB size, and identify backbone routers, ABRs, internal routers, and AS boundary routers.

Configure unique router IDs in an OSPF domain, either manually using the loopback IP or automatically from the highest IP, to prevent duplicates that disrupt neighbor adjacency.

Learn how OSPF uses cost (metric) to select the lowest-cost path, and how reference bandwidth and interface bandwidth determine cost, with manual adjustments to prevent suboptimal routing.

Explore OSPF network types, including point-to-point, broadcast, non-broadcast multiple access, and point-to-multipoint, and learn to configure matching types on both ends for fast convergence.

This lecture shows how OSPF elects a designated router and backup designated router on multi-access networks to reduce adjacencies and routing updates, using priority and router ID.

Learn how OSPF packet types—hello, database descriptor, link state request, link state update, and link state acknowledgment—facilitate neighbor discovery and link-state synchronization.

Explore how OSPF forms neighborship and adjacency, exchanges hello packets, negotiates master/slave roles, and uses lsdb synchronization and the state machine to build routing tables.

Learn basic OSPF configurations in a hands-on lab, covering area zero backbone, router IDs, network commands with wildcard masks, and adjacency troubleshooting with packet captures.

Explore ethernet switching basics and learn how switches build mac address tables, forward frames, and support communication within a local area network using mac addresses and ethernet protocols.

Learn how Ethernet protocols operate at the data link layer to transmit frames in LANs. Understand CSMA/CD, switch-based collision isolation, and VLANs to manage broadcast domains.

Compare network topologies such as star, bus, ring, tree, full mesh, partial mesh, and hybrid, analyzing features, advantages, and a potential single point of failure.

Ethernet switches operate at the data link layer and forward ethernet frames based on mac addresses, building the mac address table and isolating collision domains.

Learn how switches build mac address tables by learning source mac addresses, forward frames using the mac address table, and use dynamic or static entries with flooding for unknown destinations.

Demonstrates frame processing behaviors in switches: flooding unknown unicast and broadcast frames, forwarding unicast frames via the mac address table, and discarding frames to prevent loops.

Learn how the data link layer forwards data by encapsulating TCP/UDP, IP, and Ethernet headers, and by using MAC learning and flooding to build the address table.

Understand how a virtual local area network segments a single network into smaller broadcast domains. Learn VLAN types, ranges, and basic Huawei switch configuration and troubleshooting.

Learn how virtual local area networks split large broadcast domains into smaller, secure layer-two broadcast domains; enable inter-VLAN communication via layer-three and improve efficiency, security, and administration.

Learn how ethernet switches use 802.1Q VLAN tagging to identify frames belonging to a VLAN, forward tagged frames between switches, and keep broadcasts within the local VLAN.

Learn VLAN assignment methods for switches, from static interface-based to dynamic mac address, ip subnet, protocol, policy, and authentication-based approaches, and understand pvid implications.

Explore layer 2 Ethernet interface types: access, trunk, and hybrid, and how they handle untagged and tagged frames, pvids, and vlan tagging across switches and routers.

Learn to create VLANs on Huawei switches with single and batch commands, covering IDs 1–4094 (0 and 4095 reserved; VLAN 1 default) for interface-based assignment across two switches.

Demonstrates configuring interface-based vlan assignment on two Huawei switches, creating vlan 100 and 200, applying access and trunk ports, and testing broadcast-domain isolation.

Perform packet captures to observe 802.1q vlan tagging in a Huawei switch topology, showing untagged traffic from pcs and tagged frames with vlan ids 100 and 200 between switches.

Demonstrates mac address based vlan assignment on Huawei switches, binding macs to vlans 100 and 200 and configuring hybrid user ports for secure access.

Explore inter-VLAN communication methods using physical interfaces, subinterfaces (router on a stick), and layer three switch VLAN interfaces, and compare scalability and routing needs for cross-VLAN communication.

Explore the Spanning Tree Protocol (STP) and RTSP in layer two networks, addressing layer two loops, STP mechanisms, versions, improvements, Huawei switch configurations, and alternatives for loop elimination.

Explore how layer two loops in the data link layer cause broadcast storms, MAC address flapping, and service disruption, and learn how spanning tree protocol and link aggregation prevent them.

Explore how the spanning tree protocol prevents layer two loops by constructing a loop-free tree, blocking redundant links, and unblocking them during failures to provide path redundancy.

Elect the root bridge based on the smallest bridge ID, composed of priority and mac address, to create the spanning tree and prevent layer two loops.

Explore STP cost and root path cost, route path cost, how link speed sets costs, and how these values determine the root bridge, port roles, and blocked links.

Learn how port IDs use port priority and port number to elect designated, route, blocked, and alternate ports, preventing layer-2 loops in SDP.

Describe how bridge protocol data units drive spanning tree protocol to prevent network loops, elect the root bridge, and converge topology via configuration PDUs and topology change notifications.

Explore how spanning tree protocol elects a root bridge by bridge ID, then selects root and designated ports to create a loop-free network and block non-designated ports.

Explore the five standard spanning tree protocol port states: disabled, blocking, listening, learning, and forwarding, and how ports transition through them to prevent loops in Ethernet networks.

Explore how standard STP timers govern topology changes, unblocking ports to restore forwarding after link failures, with hello timer two seconds, forward delay fifteen seconds, and max edge twenty seconds.

Configure standard STP on Huawei switches and explore MSTP and RSTP modes, set root bridges, priorities, costs, and port states.

Standard STP exhibits slow convergence, 30 to 50 seconds, causing service disruption on topology changes, underutilizes links, and lacks load balancing due to a single root bridge and scalability limits.

Understand rapid spanning tree protocol (rstp) and its faster convergence over stp, featuring new port roles (alternate, backup, edge) and a sync mechanism with proposal and agreement bpdu.

Compare SDP and RSVP, noting RSVP's faster convergence from unique port roles and sink mechanism, and explore VLAN-based spanning tree and MST/MSTI regional load balancing.

Explore how to enhance network reliability using Ethernet link aggregation and switch stacking, covering redundancy strategies, failure scenarios, and lacp versus manual link aggregation.

Understand network reliability to keep services nonstop, using availability, MTBF, and MTR with hardware, software, and link-level redundancy, including card backup and Ethernet link aggregation.

Learn how link aggregation bundles multiple physical links into a single logical connection to increase bandwidth, improve redundancy, and enable load balancing in Ethernet networks using lacp and lag concepts.

Learn how the link aggregation control protocol (lcp) negotiates active links, system and interface priorities, and per-flow load balancing to deliver fault-tolerant, high-availability networks.

Learn to configure link aggregation on Huawei devices by creating an ETH trunk, choosing manual or Lacp mode, and adding interfaces to the trunk for reliable traffic.

Implement link aggregation in LCP mode between two switches, bundling three links into a trunk and negotiating via LCP data units to determine active links.

Introduce CSS and iStack concepts to build resilient networks by stacking switches or forming a two-switch cluster, delivering simplified management, redundancy, higher port density, and increased bandwidth.