
The [VLAN](/vlan) Trunking Protocol ([VTP](/vtp)) operates only over [trunk](/switchport-trunk) links.  Switches will not share VTP information over [access](/switchport-access) ports.

VTP operation over trunks

VLAN Trunk interfaces missing in show vlan output

VLAN control frames

VLAN

VLANs - 802.1Q tunneling (QinQ)

VLANs - Dynamic VLAN membership (VMPS)

VLANs - QinQ and CDP

VLANs - Vlans allowed and active in management domain

VLANs - when a tagged frame arrives on an access port

VLANs SVI

VMware Configuration Maximums

VMware vSwitch Port Groups and VLAN Configuration

VPN - IKEv2 peer address of 0.0.0.0 0.0.0.0

VPN - Interesting Traffic

VPN - NAT Exemption

VPN - crypto keepalive

VPN - default gateway for site to site VPN

VPN - default gateway of VPN client

VPN - split tunneling

VPN DVTI tunnel source

VRF - Definition mode

VRF - VPNv4 address

VRF Communication and Route Target Configuration

VRF and L2TPv3 Configuration and Interaction

VRF capability vrf-lite command

VRF sharing across multiple routers

VRF use cases

VRRP - Virtual IP doesn't respond to pings

VRRP - load balancing

VRRP - support for authentication

VRRP - using the same ID on different interfaces

VRRP - using the same ID on subinterfaces

VRRP and sub-optimal routing

VRRP on sub-interfaces

VTP - Client can't modify VLANs

VTP - Code Field

VTP - Multiple Servers with VTP version 2

VTP - Per interface configuration

VTP - Pruning the Extended VLAN ID Range

VTP - Revision Numbers on transparent switch

VTP - Versions

VTP - domain name automatically changes

VTP - protecting switches from lower revision numbers

VTP Advertisements

VTP Support in Emulators

VTP configuration checklist

VTP filtering shared VLANs

VTP how to disable the VLAN trunking protocol

VTP primary server

VTP revision number maximum

VTP revision number reset

VTP revision number

VXLAN - Control Plane Options

VXLAN - MP-BGP EVPN and Multicast

VXLAN - Use Cases

VXLAN - VLAN to VNI mapping

VXLAN - using an MP-BGP EVPN control plane

VXLAN EVPN Ingress Replication with BGP

VXLAN Handling BUM Traffic

VXLAN Mapping Multiple VLANs to a Single VNI

VXLAN VTEP

VXLAN access trunk port

VXLAN

Value of Cisco certifications

Very-high-bit-rate  Digital Subscriber Line (VDSL)

Virtual Private LAN Service (VPLS)

Virtual Private Wire Service (VPWS)

Virtual Router Redundancy Protocol (VRRP)

Virtual Template Configuration

Virtualization functions - definition of terms

VoIP - Anatomy of a voice communication

VoIP IP phone registration issues

WAN - edge equipment names and terminology

WAN - how to choose a WAN technology

WAN - what is BVDSL

WAP Local Mode vs Monitor Mode for Rogue Detection

WFQ and CBWFQ Comparison

WRED Mark Probability Denominator (MPD) in Byte-Based Mode

WRED for Single and Multiple Queues

Wake on LAN

Weighted Fair Queuing (WFQ)

Why do we trust a website certificate

Wide Area Network

Wireless - Aggressive Client Load Balancing

Wireless - CAPWAP tunnel

Wireless - CSMA-CA

Wireless - FlexConnect Mode

Wireless - Light Weight Access Point Protocol (LWAPP)

Wireless - Lightweight Access Point

Wireless - Meraki Management Mode

Wireless - Orthogonal Frequency Division Multiple Access (OFDMA)

Wireless - Real-time and management functions

Wireless - Using GCMP with WPA2 and WPA3

Wireless - WLC authbypass feature

Wireless - WLC trunk connection to core

Wireless - WPA3

Wireless - Wi-Fi 2.4GHz frequency band and channels