Cisco Networking Fundamentals - CCNA Prep

Configure a router on a stick by creating subinterfaces on a single physical interface, tagging vlans, assigning IP addresses to the subinterfaces, and using a trunk to connect to the switch.

Classify dynamic routing protocols into distance vector, advanced distance vector, and link state, with examples such as RIP version two, IGRP, OSPF, Is-Is, and BGP.

Explore how IPv4 networks use EIGRP to form adjacencies, exchange updates, and compute metrics from bandwidth and delay for decisions. Learn about feasible distance, reported distance, successors, and route redistribution.

Configure EGP autonomous system one across the lab routers, enable and verify peering, advertise networks, and redistribute a default route; then tune delay and use variance for unequal-cost load balancing.

Learn to troubleshoot eigrp for ipv4 by verifying matching autonomous system numbers, common subnets, and k values, using logs and debugs to diagnose adjacency issues.

Explore OSPFv2 for IPv4, including router IDs, hello exchanges, and the six states from init to full, plus area zero backbone, designated router elections, and cost-based routing.

Configure ospfv2 for ipv4 across two areas, set router IDs and network statements, advertise connected routes, verify neighbors and routes, and adjust costs and priorities to influence dr/bdr elections.

Troubleshoot OSPFv2 for IPv4 with two routers in area zero using debug IP OSPF adjacency. Identify mismatched areas, not on a common subnet, and duplicate router IDs to restore adjacency.

Configure ipv6 unicast routing, set the OSPFv3 router ID, and enable OSPF on IPv6 interfaces to establish neighbors and routes.

Configure PPP and MLPPP on wan links by enabling point-to-point on serial interfaces, applying LCP/NCP, and authenticating with PAP or CHAP, then bond links for more bandwidth.

Explore configuring a PPPoE client and server, including dynamic IP assignment via IPCP, virtual dialer and template interfaces, CHAP authentication, and IP address negotiation on dialer interfaces.

Explore how GRE tunnels form between routers, encapsulate IP traffic, and bridge unicast and multicast routing across sites, enabling dynamic routing with protocols like EGP and PIM.

Configure eBGP between customer and provider edge routers, advertise 10.0.0.0/16 into BGP, and verify peering and AS path metrics in an MPLS cloud using private AS numbers.

Learn how hsrp provides gateway redundancy by sharing a virtual ip and using active and standby routers, with version 2 preemption and priority settings.

Explore how virtual machines run on a hypervisor, connect via virtual switches and VLANs, compare IaaS, PaaS, and SaaS, and secure cloud access with VPN or MPLS and DNS resolution.

discover how quality of service prioritizes voice traffic through markings like dhcp and cos, classifications such as nbar, and prioritized queuing using cbwfq and llq to prevent tail drop.

Learn how IPv4 access lists secure networks by permitting or denying traffic on interfaces, inbound or outbound, using standard and extended ACLs with wildcard masks and optional logging.

Configure an ipv6 access list on a router to permit icmp to r2’s loopback and deny all other traffic inbound on r1’s f10 interface, noting syntax differs from ipv4.

Verify and troubleshoot Cisco ACLs by using show access-list, adjust sequence numbers to insert or remove lines, and enable logging for visibility into traffic flows.

Explore how the apic-em path trace acl tool visualizes traffic routes and matches access-list lines to aid troubleshooting.

Discover SNMP fundamentals, including MIBs, traps and informs, and how version 2c uses community strings while version 3 uses user accounts with authentication and encryption, via NMS like Cisco Prime.

Configure ip SLA to monitor icmp between routers r1 and r2, schedule every 30 seconds with a 200 ms threshold, collect history, verify with show commands, and troubleshoot wan issues.

Understand the control plane and data plane separation, where sdn controllers use southbound and northbound APIs to forward traffic with OpenFlow, Open Daylight, and Cisco APIC Enterprise module.

Troubleshoot layer 3 end-to-end connectivity between host A and host B by pinging, checking gateway reachability, interface status, subnet alignment, and static routes with trace route.

Explore CCNA prep resources, including a complete Udemy course with real-world labs using Packet Tracer, practice quizzes, flashcards, and a quick reference guide.