Ping Labz

A step-by-step, screenshot-by-screenshot walkthrough of installing Cisco Modeling Labs (CML) 2.10 on VMware ESXi: deploy the OVA, size the VM, attach the refplat ISO, run setup, and start your first node.

MSTP (802.1s) maps many VLANs onto a few spanning tree instances. How MST regions, instances, the IST and CIST work, with Cisco IOS XE config and verification.

How to build a working QoS policy on a Cisco router: MQC class maps, policy maps, the LLQ + CBWFQ model, and the shaper rule that makes it actually engage.