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VLAN

VLAN Trunking Explained: 802.1Q, Allowed Lists, and Trunk Negotiation

Learn why VLAN trunks exist, how 802.1Q tagging works, the difference between ISL and 802.1Q, and how allowed VLAN lists and trunk negotiation function in Cisco networks.

Dec 21, 2024 7 min read

Fundamentals

Cisco Port Security Guide: Lock Down Your Network Ports

Master Cisco port security techniques to prevent unauthorized devices from joining your LAN — step-by-step commands, violation modes, and best practices included.

Dec 21, 2024 3 min read