VLAN
A Virtual Local Area Network or VLAN is a logical subdivision of a network. A VLAN in general corresponds to a single subnet, a broadcast domain, and to a network segment.
VLANs can be configured within a switch, and can be assigned to access ports as well as to trunk ports. Frames that belong to specific VLANs have an 802.1Q tag that includes the VLAN ID of the VLAN to which it belongs.
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- DHCP snooping rate limiting best practice
- EEM Matching a string within CLI output
- ERSPAN
- EtherChannel - implementing over 802.1Q tunneling
- EtherChannel - prerequisites for bundling
- Ethernet VPN (EVPN)
- FHRP Load Balancing Behavior
- HSRP - standby group numbers
- IGMP - Snooping Querier
- IGMP - access group
- IGMP - ip igmp snooping querier command
- IGMP - using VLAN access maps to filter multicast traffic
- IGMP snooping source IP address for messages
- IGMP snooping
- IP addressing on a Switch
- IPv6 RA Guard
- Loops in layers 2 and 3
- MetroEthernet - VLAN design considerations
- MetroEthernet - Virtual Private LAN service
- Native VLANs and untagged frames
- NetFlow - applying to an SVI
- Network - Layer 2 network
- Network - Layer 3 network
- Network - broadcast domain
- Network Design - Spine and leaf architecture
- Network design - confine VLANs to as few access switches as possible
- Network planes
- Networks - Overlay Transport Virtualization (OTV)
- PTP - Clock Types
- Private VLANs - across a trunk
- Private VLANs - non-operational type
- QoS - CoS to DSCP and DSCP to CoS mapping
- QoS - marking
- QoS CoS vs DSCP
- QoS using a shared policer on Nexus devices connected with vPC
- RSPAN
- Routers - what is a loopback interface
- Routing - default gateway
- Routing - what is a WAN port
- SG300-10 - InterVLAN routing defaults
- SPAN using VLANs as a source on a Nexus device
- SPAN
- STP - BPDUs on a switch where STP is disabled
- STP - Disabling spanning-tree
- STP - MST and PVST+ selecting root port
- STP - MST maps groups of VLANs
- STP - Multiple Spanning Tree (MST)
- STP - PVST+ and Rapid PVST+ interaction
- STP - Per VLAN Spanning Tree plus (PVST+)
- STP - Shortest Path Bridging (SPB)
- STP - bridge priority
- STP how to find the root bridge
- Spanning Tree Protocol (STP)
- Switch configuring a routed port
- Switch protected port limitations
- Switch protected port
- Switching - switched virtual interface (SVI)
- Switching - switchport autostate command
- Switchport - IEEE 802.1q
- Switchport - ISL
- Switchport access
- Switchport trunk
- VACL - Changes to ACL are active immediately
- VLAN - Extended Range
- VLAN - Native VLAN best practices
- VLAN - Native VLAN on a router on a stick
- VLAN - Private VLAN
- VLAN - VLAN IDs 0 and 4095
- VLAN Access Lists
- VLAN Mapping
- VLAN SVI status
- VLAN Tag
- VLAN control frames
- VLANs - 802.1Q tunneling (QinQ)
- VLANs - Dynamic VLAN membership (VMPS)
- VLANs - Vlans allowed and active in management domain
- VLANs - when a tagged frame arrives on an access port
- VLANs SVI
- VRF
- VRRP - using the same ID on different interfaces
- VTP - Client can't modify VLANs
- VTP - Versions
- VTP - protecting switches from lower revision numbers
- VTP Advertisements
- VTP filtering shared VLANs
- VTP operation over trunks
- VTP primary server
- VTP revision number maximum
- VTP revision number
- VTP
- VXLAN - Use Cases
- VXLAN - VLAN to VNI mapping
- VXLAN access trunk port
- VXLAN
- VoIP - Configuring a switch port for use with an IP phone
- VoIP - Voice VLAN
- VoIP IP phone registration issues
- Wireless - WLC trunk connection to core
- Wireless AP FlexConnect mode switchport mode
- Wireless roaming defined