Cisco CCNA GNS3 Ultimate Labs: CCNA Exam Prep Labs to pass

Learn how to install GNS3 version 2.2 GUI on Windows, set up the Windows client and the GNS3 PVM, pick a hypervisor, and build a basic topology to verify connectivity.

Install and run the GNS3 GUI and GNS3 VM on Windows using VMware Workstation Pro, ensuring matching versions, enabling nested virtualization, and configuring RAM and CPU for topologies.

Download and install Cisco IOS images for GNS3, and integrate the GUI with the GNS3 VM. Build a topology with routers, switches, and Docker containers to test IOS images.

Diagnose routing and OSPF area mismatches to restore reachability between PCs. Verify with show ip protocols and traceroute to confirm neighbor relationships and proper area configuration.

In this OSPF troubleshooting lab, identify a duplicate router-id causing a nonfunctional neighbor relationship and ping failures, then fix by assigning unique router-ids to restore OSPF adjacency and connectivity.

Troubleshoot OSPF in CSI scenarios across multiple routers, verify neighbor relationships and area zero and area one routes, and correct network statements to enable full route exchange using show commands.

Troubleshoot routing neighbor issues in a gns3 lab with ping and traceroute, fix not on a common subnet by correcting interface ip addresses, and enable terminal monitor for console logs.

Troubleshoot EIGRP neighbor relationships in the EIGRP lab by verifying autonomous system numbers with show ip protocols and show ip eigrp neighbors, identify mismatched AS, and align AS across routers.

Troubleshoot EIGRP neighbor relationships by diagnosing K-values mismatches with show ip protocols and enabling logging, then restore default K-values to establish neighbors.

Resolve eigrp neighbor issues by analyzing adjacency up and down events, logs, and retransmission timeouts, and identify an inbound access list blocking eigrp messages on gigabit 00.

Troubleshoot eigrp neighbor issues by verifying interfaces and physical connectivity, identify administratively shut interfaces, and bring them up to restore route learning and neighbor relationships.

Troubleshoot EIGRP neighbor relationships by correcting the inverse wildcard mask and enabling EIGRP on the correct interfaces, then advertise the loopback to establish two adjacencies.

Develop a GNS3 campus lab: configure VLANs, trunking, static routing, hot standby routing protocol (hsrp) failover, OSPF/IGP routing, and NAT across core and access switches for CCNA exam prep.

Configure switches with names and trunk or access interfaces, set VTP mode to transparent, create VLANs 10 and 20, and use range commands to configure multiple interfaces.

Configure and verify GNS3 CCNA lab components, enable transparent switches, VLANs 10 and 20, assign router interfaces with DHCP and static IPs, and save configs.

Configure layer two switches with a management ip for telnet or ssh; create an svi for vlan 1 and SVIs for vlan 10 and 20; verify connectivity with pings.

Learn how Cisco discovery protocol reveals directly connected devices with show CDPR neighbors and show CDPR neighbors detail, and apply security practices to disable CDPR on internet-facing interfaces.

Disable CDPR globally to control neighbor discovery, then verify with show CDPR neighbors; wait at least 60 seconds for updates and 180 seconds to time out entries.

Learn to view CDPR neighbors and interface settings, enable logging of duplex mismatches, adjust hold and timer values, and inspect CDPR traffic.

Learn how to use CDPR and LDP to map network neighbors, reveal non-Cisco devices, and compare Cisco discovery with industry-standard discovery in a GNS3 lab.

Configure switches in the GNS3 campus topology by naming them, creating VLANs 10 and 20, and setting trunk ports with dot1q encapsulation for management VLAN 1.

Configure trunk ports and disable DTP on core switches using dot1q encapsulation, assign static trunks on inter-switch links, and set static access ports for VLANs 1, 10, and 20.

Configure trunks and access ports for vlan 10 and 20, verify ip interface brief, test pings; note the need for a default gateway to reach other vlans and save configs.

Configure trunk and access ports across VLANs 10, 20, and 1, implement rapid PVST+ with extended system IDs, and analyze root and route bridges to maintain a loop-free topology.

Spanning-tree designates root and designated ports, blocks others to prevent loops, and VLAN 10 and VLAN 20 traffic is optimized by setting root switches for each VLAN.

Demonstrate trunking configuration and verification on switches using show interfaces trunk and show spanning tree to identify forwarding and blocking ports, with VLANs 1, 10, and 20 across gigabit interfaces.

Explore how spanning-tree blocking on switch ports still permits cdp and ldp traffic, with neighboring switches visible as cdp and ldp neighbors even when ports are discarding.

Optimize spanning tree by making core switches the root or backup routes for VLANs 10, 1, and 20, adjust priorities to enable forwarding and load sharing, and prepare for EtherChannel.

Configure and verify link aggregation (ether channel) with LCP active to bond two switches, boost throughput, and provide redundancy while optimizing spanning-tree convergence.

Improve spanning-tree convergence by configuring inter-switch links as point-to-point, enabling portfast on edge ports, and testing with pings to compare shared versus point-to-point performance.

Configure hot standby routing protocol to create a virtual router as the default gateway for VLANs 10 and 20, with switch 1 and switch 2 as active routers respectively.

Configure a GNS3 campus lab to run HSP with a virtual router as the single default gateway, using VLAN 10 and VLAN 20, standby groups, and preemption.

Learn to configure and verify hsrp on vlan 10 and 20 in gns3, assign virtual ip addresses, adjust priorities, enable preemption, and test failover with ping.

Configure a default gateway or static default route on the device, verify with show ip route, and use ip default gateway when routing is disabled and test connectivity with ping.

Demonstrates hot standby protocol behavior in a switched network, showing active and standby routers, VLAN 10 and VLAN 20, and failover tested with continuous pings and timer adjustments.

Enable IGP across switch one, switch two, and router three, advertising the ten network routes. Disable automatic summarization to ensure accurate route exchange and default route advertisement.

Enable ip routing, configure igp with no auto summarization, establish neighbor relationships, and test inter-vlan connectivity; prepare to advertise a default route on router three for internet access.

Configure IGP on switches, advertise a default route, and redistribute a static route, while troubleshooting gateway of last resort, interface addresses, and administrative distances across the lab network.

Troubleshoot a cloud connectivity issue in GNS3 by reconfiguring the cloud to the local area connection, deleting and recreating it, then verify with ping to the internet-facing router.

Configure nat on edge router to let inside devices reach internet through outside interface using pat overload and access-list 1. Verify with dns lookups and pings to Google.

Configure and verify a basic BGP topology across two autonomous systems, establish neighbor relationships, advertise networks with the network command, and use show ip bgp summary.

Troubleshoot BGP neighbor relationships in a GNS3 lab, fix misconfigured remote autonomous systems, and verify routes with show ip bgp and show ip route.

Diagnose BGP troubleshooting scenarios by verifying routing table advertisements, ensuring the network command matches exact prefixes, and using show commands to resolve path connectivity.

Tackle a BGP troubleshooting scenario 3 by identifying a shutdown neighbor and restoring the session, then verify routes with show ip bgp summary.