An essential factor in troubleshooting LAN connectivity is by first ensuring that the physical connections are functional. When it comes to a Layer 2 network, this means the Switches, the Ports and the Ethernet cables that connect them all together. For the Ethernet cable side of things, we usually have …
On a Cisco Device, the Configuration Register (often referred to and listed in the configuration as ‘confreg’) is a value which tells the device which software to load and run. We can check with the ‘show version’ command what the device is currently set to. See the example output below: …
When installing or upgrading the IOS on a Cisco Switch, there are 2 modes we should be aware of. Bundle Mode and Install Mode. As you’ve likely guessed, these are simply different methods of installing the Cisco IOS, but the difference is important. As newer IOS updates get released, the …
Having been fortunate enough to get some hands on experience with Cisco’s vision of the future of the Campus Network, DNA Center, I found myself relearning how to do basic Network Engineer configuration. At times it didn’t seem intuitive, but I will share my experience configuring ports and where the …
When you have multiple Switches as part of a Stack, it can be slightly confusing when checking the uptime to determine what is what. Let’s take a look at how to understand this better. Here’s some example output of a Stack comprising of 2 Switches. Note that all sensitive information …