Hands-on experience in networks, servers and business communications.
Forgot your Cisco switch password, or inherited a switch whose password nobody knows? This article walks through password recovery on Catalyst switches step by step, without losing the configuration or the VLANs.
· 4 min read
A switch running on default settings is an open door into your network. This article gives a practical hardening checklist for Cisco switches with ready-to-use commands, from passwords and ports to Port Security, DHCP Snooping and BPDU Guard.
· 5 min read
VLANs split the network into separate segments, and VTP carries the VLAN definitions from one central switch to the rest. Learn how to create VLANs, access and trunk ports, set up a VTP server and clients, and avoid the dangerous revision number trap.
· 4 min read
There are three ways to manage a Cisco switch: the console cable, Telnet and SSH. This article sets up all three step by step, from the management address and console password to SSH version 2, restricting access and closing Telnet.
· 4 min read