Browse Lessons

GNS3 Talks: Python for Network Engineers with GNS3 (Part 12) - Netmiko, SSH, Python and Cisco

CCNA #071 Using Ostinato to prove how broadcasts work for the CCNA Exam (Part 1)

CCNA #070 Using Ostinato to prove how networks work for the CCNA Exam. Don't be bitten!

GNS3 Talks: Python for Network Engineers with GNS3 (Part 11) - Paramiko, SSH, Python and Cisco

CCNA #069 MAC Address troubleshooting scenario 1: Can you find the issue?

GNS3 Talks: Python for Network Engineers with GNS3 (Part 10) - Jupyter Python Clients (3.0 and 2.7)

CCNA #068 How to configure Layer 3 switching and interVLAN routing for the CCNA Exam (Part3)

GNS3 Talks: Python for Network Engineers with GNS3 (Part 9) - Backup switch configurations.

CCNA #067 How to configure Layer 3 switching and interVLAN routing for the CCNA Exam (Part2)

CCNA #066 How to configure Layer 3 switching and interVLAN routing for the CCNA Exam (Part1)

GNS3 Talks: Python for Network Engineers with GNS3 (Part 8) - Opening Files and spacing importance!

CCNA #065 Routed ports, Switchports and SVIs - what and how?

GNS3 Talks: Python for Network Engineers with GNS3 (Part 7) - How to write better code and styles

GNS3 Talks: Python for Network Engineers with GNS3 (Part 6) - In-band management and save configs

GNS3 Talks: Fast IOSv boot

CCNA #064 Troubleshooting IPv6 networks for the CCNA exam (Part 3). Can you find the issue?

GNS3 Talks: Stop BPDUs from Ostinato breaking STP using STP Root Guard (Ostinato Part 9)

GNS3 Talks: Python for Network Engineers with GNS3 (Part 5) - Multiple switches, multiple VLANs

CCNA #063 Troubleshooting IPv6 networks for the CCNA exam (Part 2). Can you find the issue?

CCNA #062 Troubleshooting IPv6 networks for the CCNA exam (Part 1). Can you find the issue?

GNS3 Talks: Make your PC the Spanning Tree Root by crafting BPDUs with Ostinato (Ostinato Part 8)

GNS3 Talks: Python for Network Engineers with GNS3 (Part 4) - Create switch VLANs using loops

GNS3 Talks: Python for Network Engineers with GNS3 (Part 3) - Remove Passwords and improve scripts

CCNA #061 Did RIP or something else break the network? Can you find the issue?

CCNA #060: LAN and WAN troubleshooting Scenario: Can you find the issues?

GNS3 Talks: Python for Network Engineers with GNS3 (Part 2) - Configure VLANs on switches.

CCNA #059 RIP Troubleshooting Scenario 3: Can you find the issue?

GNS3 Talks: Python for Network Engineers with GNS3 (Part 1). Network programmability made easy.

GNS3 Talks: Learn Linux with Cumulus Linux and GNS3 (Part 3). Ideal for networkers to learn Linux.

CCNA #058 RIP Troubleshooting Scenario 2: Can you find the issue?

CCNA #057 RIP Troubleshooting Scenario 1: Can you find the issue?

GNS3 Talks: Learn Linux with Cumulus Linux and GNS3 (Part 2). Ideal for networkers to learn Linux.

GNS3 Talks: Learn Linux with Cumulus Linux and GNS3 (Part 1). Ideal for networkers to learn Linux.

CCNA #056 DHCP Troubleshooting Scenario 3 - Can you find the issue?

CCNA #055 DHCP Troubleshooting Scenario 2 - Can you find the issue?

GNS3 Talks: OpenFlow FLOW MOD, PACKET IN, PACKET OUT and more captures using Wireshark and GNS3

GNS3 Talks: OpenFlow captures using Wireshark, Docker containers, OpenDaylight, SDN

GNS3 Talks: Ostinato Packet Generator - double tag 802.1Q frames for VLAN hopping (Ostinato Part 7)

CCNA #054 Address Resolution Protocol (ARP) explained (with Wireshark)

GNS3 Talks: Ostinato Packet Generator - Inject 802.1Q frames for VLAN hopping (Ostinato Part 6)

CCNA #052 Campus troubleshooting scenario 3: Can you find the issue?

GNS3 Talks: Ostinato Packet Generator - Craft packets to hack network devices (Ostinato Part 5)

CCNA #051 CCNA IP addressing and subnetting: Can these hosts ping each other?

GNS3 Talks: Ostinato Packet Generator - Broadcast traffic: What happens? (Ostinato Part 4)

GNS3 Talks: Ostinato Packet Generator - Multicast traffic: what happens? (Ostinato Part 3)

GNS3 Talks: Create a Docker based network using OVS and Linux Containers

GNS3 Talks: Ostinato Packet Generator - what happens to Unknown Unicast traffic? (Ostinato Part 2)

CCNA #049 IPv6 static routing using next hop IPv6 address (IPv6 routing Part 2)