EIGRP Enabler exercise 3 asked you to configure four routers, specifically to add the EIGRP network commands. If you’ve not seen these before, check out the Routing Protocol Enabler intro post. [...]

The goal is to get so good at your OSPF and EIGRP network commands that you get bored with all these exercises. There yet? If not, here’s another. As always with the EIGRP and OSPF Enabler [...]

The Cisco SE organization and Cisco DevNet are teaming up to hold a Cisco Chat about CLI and API. It has a catchy title: “Have APIs Killed the CLI?”. This blog post gives some short [...]

Can you think abstractly about how layer 2 switching works, and how VLANs and trunks impact their forwarding decisions? Or do you need to see the specific configurations to make sense of it? This [...]

Layer 2 switching seems easy – but then you must think through how it works in a real network. Applying the ideas proves whether you really understood the concepts or not. This next question [...]

This latest OSPF Enabler exercise asked you to configure four routers in a three-area design. As usual, the exercise asks for different styles of OSPFv2 network commands, for no other reason than [...]

In this latest OSPF Enabler exercise, you’ll configure a network of four routers with three areas. As always, the idea is simple: In one exercise, you’ll get to configure about 10 different [...]

This latest EIGRP Enabler exercise asked you to configure three routers, specifically to add the EIGRP network commands. This post lists the answers – simple enough.