200-301 V1 Part 3: VLANs, STP

Both layer 2 EtherChannel and layer 3 EtherChannel use the same set of commands to create the channel. You have the option to use static configuration or one of two dynamic protocols to negotiate [...]

EtherChannel takes a big step towards improving STP. With two links between switches, but without using EtherChannel, each instance of STP could use only one of the links blocking the other link. [...]

LAN switches use many default settings that work without you having to do anything, and oftentimes, you can leave those default settings as-is. However, with Spanning Tree Protocol (STP), and its [...]

LAN switches use many default settings that work without you having to do anything, and oftentimes, you can leave those default settings as-is. However, with Spanning Tree Protocol (STP), and its [...]

VLAN trunks between Cisco Catalyst switches support all VLANs known to the switches. As time progresses, each time the switch learns of a new VLAN, the VLAN trunk also allows traffic in the VLAN [...]

Configuring VLANs on access switches may be the most common repetitive configuration task in many networks. So what do you configure when adding new access devices to new VLANs? This lab gives [...]

You can memorize VLAN trunking commands by staring at a table – but you will remember them much better if you try different combinations in sample labs, especially if you try them from the CLI of [...]

Ready to prepare some access switches to support IP phones? This latest config lab sets up the problem for that specific task. The lab shows the common access switch configuration required when [...]

Creating a VLAN is simple: just configure the vlan number command. However, even in a small network with four switches, like the one used in this next lab, a VLAN config lab can give you a few [...]

Short and sweet – how do you create new VLANs and put a couple of ports in each? Today’s lab should be an easy and automatic process before you go take the CCNA exam, but getting one more rep in [...]