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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- EtherChannel - implementing over 802.1Q tunneling
- EtherChannel - prerequisites for bundling
- Ethernet VPN (EVPN)
- FHRP Load Balancing Behavior
- HSRP - Deployment in Distribution Layer
- 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
- IP addressing on a Switch
- Layer 2 (L2) LISP
- Layer 2 network
- Local Proxy ARP
- Loop-free layer 2 network design
- Loops in layers 2 and 3
- MAC address table - Switches maintain one table per VLAN
- MST Configuration and VLAN Specific STP Overrides
- MST and RSTP with vPC and EtherChannel
- MetroEthernet - VLAN design considerations
- MetroEthernet - Virtual Private LAN service
- Native VLAN Best Practices
- Native VLAN Tagging
- Native VLAN Traffic Flow on Trunk Ports
- Native VLAN
- Native VLANs and untagged frames
- NetFlow - applying to an SVI
- Network - Layer 3 network
- Network Design - Choosing a technology for multiple datacenter topology
- 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
- Port Access Control Lists (PACLs)
- Private VLANs - non-operational type
- Private VLANs and Trunks
- Proxy ARP Best Practices
- QoS - CoS to DSCP and DSCP to CoS mapping
- QoS - Recommended router images for QoS labs in GNS3
- 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 - BPDUs, VLAN IDs, and PVST+
- STP - Disabling spanning-tree
- STP - MST CST and CIST
- STP - MST and PVST+ selecting root port
- STP - MST maps groups of VLANs
- STP - Multiple Spanning Tree (MST)
- STP - Multiple types of STP on the same switch
- STP - PVST+ and Rapid PVST+ interaction
- STP - Per VLAN Spanning Tree plus (PVST+)
- STP - Shortest Path Bridging (SPB)
- STP - bridge priority
- STP - spanning-tree root primary command
- STP how to find the root bridge
- Spanning Tree Protocol (STP)
- Switch configuring a routed port
- Switch protected port limitations
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- Switched Virtual Interface (SVI)
- Switching - switchport autostate command
- Switchport - IEEE 802.1q
- Switchport - ISL
- Switchport - show vlan internal usage
- Switchport access
- Switchport trunk
- VACL - use cases
- VACL Changes to ACL are active immediately
- VACL vs ACL
- VLAN - Extended Range
- VLAN - Native VLAN on a router on a stick
- VLAN - Private VLAN
- VLAN - QinQ troubleshooting
- VLAN - VLAN IDs 0 and 4095
- VLAN Mapping
- VLAN SVI status
- VLAN Tag
- VLAN Trunk interfaces missing in show vlan output
- 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
- VMware vSwitch Port Groups and VLAN Configuration
- VRF
- VRRP - using the same ID on different interfaces
- VTP - Client can't modify VLANs
- VTP - Pruning the Extended VLAN ID Range
- 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 Mapping Multiple VLANs to a Single VNI
- VXLAN access trunk port
- VXLAN
- VoIP IP phone registration issues
- Wireless - WLC trunk connection to core
- Wireless roaming defined