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.
Now for some more EIGRP work. Your job: read and react to a set of requirements to then choose how to configure about a dozen EIGRP network commands. Simple, useful, do it and move on to the next [...]
This latest OSPF Enabler exercise asked you to configure four routers in a two-area design. As usual, the exercise asks for different styles of OSPFv2 network commands, for no other reason than [...]
Time for another OSPF Enabler exercise. The idea is simple: In one exercise, you’ll get to configure about 10 different OSPFv2 network commands, with different requirements for each. Just getting [...]
Do you do well with configuration, but then get confused about what happens behind the scenes? Do you know how to configure a layer 2 switch’s IPv4 address, but get confused about how it uses [...]