CCNA 200-301 Video Boot Camp with Chris Bryant

Understand collision domains, CSMA/CD, and why hubs and repeaters create limitations; learn how signals attenuate, collide, jam, and recover with backoff timing.

Explore how a hub broadcasts to all ports except the source, creating unnecessary traffic and a collision domain. Preview reducing broadcast overhead on routers and switches, and moving to switching.

Move from hubbing to switching with micro-segmentation, creating separate collision domains for each host. Understand that the default switch behavior maintains one broadcast domain, while VLANs offer segmentation.

Build MAC address tables on a Cisco switch to decide forward, drop, or flood actions, compare dynamic and static entries, and explain physical (burned-in) addresses and VLAN impacts.

Explore how a switch builds its mac address table by learning source addresses, then forwards, floods, or filters frames based on known destinations, with dynamic entries aging after five minutes.

Explore dynamic mac address table entries with live lab demos, using show mac address to filter dynamic entries and quickly restore user connectivity after port failures.

Master hex concepts and Mac address structure, perform hex–decimal conversions, and apply exam-ready practice tips, emphasizing consistent case and rapid, confident calculation.

Master switch configurations and VLAN concepts, learning essential lab commands. Practice initializing a switch from scratch with write erase, vlan.dat handling, and setup mode.

Navigate Cisco IOS configuration modes from user exec to privileged enable and global config, using help and CR to complete commands, and set a hostname and interface mode.

Learn to use logging synchronous and exec timeout on the console port, and review vlans for managing collision and broadcast domains.

Explore why VLANs are created to group hosts, enhance security, and limit broadcast domains. Practice configuring VLANs and testing connectivity with basic and extended ping in a lab environment.

Configure vlan 24 and assign hosts 2 and 4 to it, segmenting network into two broadcast domains. Inter-vlan communication requires routing, as hosts in different vlans cannot ping each other.

Explore trunking protocols and how frame tagging enables VLAN communication across switches. Compare ESL and dot1Q, explain native VLAN concepts, and highlight configuration steps to avoid automatic trunking.

Master trunking modes and encapsulation on Cisco switches, set dot1Q or ESL encapsulation, and verify trunks with show interface trunk and show vlan while understanding dynamic auto and dynamic desirable.

Explore dynamic trunking protocol (DTP) and trunking modes, learn when to enable or disable DTP, and compare switchport trunk configurations, encapsulations, and real-world lab tips.

Configure per-vlan traffic filtering across switches, demonstrate trunk negotiation between 802.1Q and ISL, and manage allowed vlan lists on trunks.

Explore per-VLAN traffic filtering and ACL-based blocks, and learn static and dynamic VLAN creation to ensure proper inter-VLAN communication.

Master how to fully initialize a switch by executing write erase, deleting the vlan.dat file, and reloading, then verify with show vlan brief to confirm vlan 20 is removed.

Explore how vlan trunking protocol synchronizes vlan databases across switches, troubleshoot vlan 30 reachability, and compare server, client, and transparent modes with domain naming.

Explore how vlan trunking protocol advertisements and configuration revision numbers manage vlan data and domain joins, and how a higher crn updates information without overriding vlan configurations.

Explore how VTP pruning reduces broadcast, unknown unicast, and multicast over trunks by sharing VLAN usage; enable pruning per domain with VTP pruning to limit traffic to VLANs in use.

Explore the spanning tree protocol (stp) fundamentals, including redundancy, root bridge election, port blocking and forwarding, and how stp converges to prevent switching loops in layer 2 networks.

Explore bpdus and the root bridge election in spanning tree protocol, detailing how the root is chosen per VLAN, how hello bpdus originate, and how non-root forwards.

Explore how STP elects the root bridge via superior and inferior BPDUs, and how ports transition through disabled, blocking, listening, learning, and forwarding to converge across VLANs.

Discover how a root bridge election unfolds in a three-switch network, evaluate BPDUs as inferior or superior, and watch convergence redefine the root, root ports, and designated ports.

Spot root bridges in the wild by analyzing show spanning vlan outputs to compare root and bridge IDs, and identify designated, root, and blocking vs forwarding ports.

Explore how STP timers govern BPDU generation and port states, including hello time, forward delay, and max age, with default values and rules for applying changes.

Explore how stp port costs and root costs shape the root bridge selection and route costs across switches, including practical lab insights on bpdu forwarding and default fast ethernet costs.

Explore how a non-root switch selects its root port through successive tie-breakers, including lower root cost, BPDU sources, port priority, and remote port IDs, with practical show spanning-tree commands.

Explore how a designated port is selected on a shared segment between non-root switches, using root cost and the lowest bid as tiebreakers to block one port and prevent loops.

Learn how spanning tree protocol determines root and designated ports when link speeds differ, and understand how 10/100/1000 Mbps costs affect STP, including blocking and transitions through learning to forwarding.

Adjust a switch port cost using an interface spanning-tree command to influence root port selection, observe the listening, learning, and forwarding states, and explore per VLAN load balancing.

Demonstrate per vlan load balancing by routing vlan 30 and 40 over the 403–204 link while vlan 10 and 20 stay on 206, illustrating root and blocking ports.

Change root bridge elections in the spanning tree protocol. Use the spanning tree primary command to set switch one as root and observe how VLAN IDs shape the result.

Use the root secondary command to lower switch two's priority when switch one fails. Verify VLANs 1, 10, 20, and 30 root status; compare route primary secondary with 4096 increments.

Spread root bridge roles across switches for multiple VLANs and verify per-VLAN spanning tree status with show spanning; understand designated, root, and alternate ports.

Learn how Portfast speeds boot and DHCP by allowing a port running spanning tree protocol to move from blocking to forwarding. Configure Portfast at interface level to prevent loops.

Learn how route guard protects the designated route bridge by blocking superior BPDU on a trunk port, forcing the port into route inconsistent state when a superior BPDU arrives.

Enable bpdu guard on the port to shut it down on any incoming bpdu, a security feature stricter than root guard, and verify the error disabled state.

Learn how error disable recovery handles bpdu guard, set the timer (default 300 seconds or 30 seconds for testing), and observe port recovery versus re-disable.

Explore rapid spanning tree protocol, pvst, and rapid pvst, and their effects on fast root port convergence, demonstrated through labs and real-time topology changes.

Explore how spanning tree protocol behaves on multi-trunk topologies, compare stp and rapid pvst, and understand root ports, blocking and forwarding transitions.

Master spanning tree protocol basics by comparing 802.1W and 802.1D standards, detailing port states from discarding to forwarding, and distinguishing edge, non-edge, and backup ports.

Build a static ether channel across switches using interface range and port-channel, verify with show commands, and note how STP and layer two compare to layer three ether channels.

Explore what happens when ports in an existing etherchannel go down, how STP treats the bundle, cost changes, and how to diagnose with show spanning vlan and show etherchannel commands.

Explore ether channel negotiations by comparing the industry standard lacp and Cisco proprietary pagp, including active/passive and auto/desirable modes, port priority, and how dynamic changes affect channel formation.

Explore dynamic etherchannel creation using Pagp, configuring interface range with auto/desirable mode, and verify port channel 24 is up and bundled with show commands.

Build an etherchannel using lacp, configure interface ranges and active/passive modes, verify with show commands, and perform housekeeping by removing the channel-group to drop the port channel.

Learn to recognize and fix etherchannel mismatches by checking speed, duplex, VLAN and trunk settings, and STP across ports. Use show commands to verify integrity and understand port cost changes.

Learn when and why to change the native vlan on trunk links, with a live Cisco switch demo and guidance on 802.1Q trunking messages and mismatches.

Master binary-to-decimal and decimal-to-binary conversions to build subnetting skills for production networks and Cisco exam prep, practicing with dotted decimal IP addresses and octets.

Master decimal-to-binary conversions using a left-to-right subtraction method and apply it to subnetting, confirming results with step-by-step examples like 217 to 11011001.

Learn to calculate the number of valid subnets and hosts by converting between prefix notation and dotted decimal masks, borrowing host bits, and using two practical methods with practice questions.

Calculate the number of valid hosts per subnet by determining host bits from the subnet mask, applying 2^host_bits minus 2, and understanding why the first and last addresses are unusable.

Determine the subnet of an IP address using a three-step process: convert the address to binary, convert the mask to binary, and count the ones in the network bits.

Learn to calculate the broadcast address and the range of valid addresses for subnets by converting IPs to binary, identifying host bits, and applying masks such as /25 and /18.

Master practical subnetting by solving real-world class B and class C scenarios: determine masks to meet subnets and host limits, using slash notation /25 and /29.

Master binary fundamentals for routing and subnetting with IPv4 addresses, masks, and prefix notation, and learn about address classes, private and public addresses, and reserved addresses.

Identify IP address classes by the first octet (A:1–126, B:128–191, C:192–223) and use default masks /8, /16, /24; note loopback 127, multicast 224–239, private ranges, and RFC 791.

Explore how a host uses a default gateway and routing table to forward packets, distinguishing same-subnet delivery from remote destinations and applying the longest-match rule for connected routes.

Learn how default static routes and routing table entries enable inter-router connectivity in a two-router topology, with next-hop configuration and troubleshooting using ping, traceroute, and debug IP packet.

Configure and verify loopback interfaces as virtual, non-physical interfaces, then study hub-and-spoke networks with static routing, preparing for RIP and ARP topics in later sections.

Explore the initial IP route table across three routers, identify connected and local host routes for loopback and serial interfaces, and practice ping and extended ping for connectivity verification.

This session guides you through a static route lab, using ping and traceroute for connectivity tests, and introduces debug ip packet to diagnose routing.

Troubleshooting static routes in a hub and spoke network reveals how a regular static route fixes reachability to router two’s loopback.

Explore why static routes aren’t scalable for larger networks and how default routes and dynamic protocols reduce routing table size and overhead, with a preview of Rip.

Learn wildcard masking for OSPF by contrasting it with standard network masks, identify I care and I don't care bits, and apply precise wildcard masks to network commands.

Explore RIP lab fundamentals by configuring RIP version 2, disabling auto summary, and bypassing split horizon in a hub-and-spoke network, and observe show ip protocols and dynamic updates in action.

Explore eigrp fundamentals, including its enhanced interior gateway routing protocol, adjacency and hello packet exchanges, feasible successors, and bandwidth-aware metrics for rapid convergence.

This session demonstrates EGP on a hub-and-spoke network with AS 100 and 172.12.123.0/24, uses no auto summary, and verifies neighbors with show ip eGP neighbor.

Explore how administrative distance selects the most believable source when routes collide. Understand longest match and how RIP, RIP version 2, IGP, and OSPF influence routing table entries.

Build a floating static route and host route in a three-router topology using RIP version 2, with a passive interface and a backup path for the unstable link.

Learn to implement floating static routes by boosting a static route's administrative distance above RIP, verify failover with ping and trace route, and observe routing table behavior.