Advanced level · Module 1 of 6 · 22 guided hours
Routing and Switching in Depth
Build larger, resilient networks with dynamic routing, redundancy, IPv6 and WAN links.
Learning objectives
- Explain and configure single-area OSPF
- Add redundancy with spanning tree and link aggregation
- Plan and configure IPv6 addressing
- Design WAN and internet links with failover
Topics
- OSPF
- administrative distance
- spanning tree
- EtherChannel
- IPv6 addressing
- WAN and dual ISP
Lessons
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Lesson 1 Dynamic Routing with OSPF
Let routers learn routes automatically and adapt to failures.
dynamic routingOSPFneighbourscost
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Lesson 2 Switching Redundancy
Add redundant links without creating loops.
switching loopsspanning treeroot bridgeEtherChannel
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Lesson 3 IPv6 Addressing
Plan and configure IPv6 alongside IPv4.
IPv6 formatglobal and link-local addresses/64 subnetsSLAAC and DHCPv6
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Lesson 4 WAN Links and Internet Resilience
Connect sites and keep the internet available.
fibre, microwave, 4G/5G, satelliteSLAsdual WANfailover testing
Practical activity
Build a three-router OSPF network with redundant switch links and dual-stack IPv4/IPv6 addressing in Packet Tracer, then test failover.
Expected outcomes
- Resilient, scalable designs
- Dual-stack readiness
Assessment
Configurations and failover tests reviewed.
Taught live by an instructor — online or in person. Free course lessons are for self-study and do not lead to a certificate — see registration options.