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The concept of VLANs explained simply and illustrated effectively showing you the purpose and functionality of VLANs.
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Want to see the Native VLAN in action?
• Native VLAN - the DEFI...
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Think you understand VLANs? Test yourself against the VLAN Challenge:
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What happens when there is a Native VLAN mismatch?
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Want to learn Computer Networking?
• Networking Fundamentals
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00:00 - Topology Intro
00:24 - Splitting one Physical Switch into Virtual Switches
01:47 - Extending Virtual Switches to other Physical Switches
03:19 - Access Ports, Trunk Ports, Tagged Ports, Untagged Ports
04:46 - VLAN Tags and 802.1q
06:55 - Logical Topologies vs Physical Topologies
07:31 - Native VLAN
10:20 - Summary of what we've learned
Summary:
VLANs provide two major functions:
- Break up physical switches into virtual "mini switches“
- Extend the virtual "mini switch" to multiple physical switches
VLANs allow your Logical topology to be unconstrained by your Physical topology
Access Ports / Untagged Ports - ports which carry traffic for only ONE VLAN
Trunk Ports / Tagged Ports - ports which carry traffic for MULTIPLE VLANs
All frames traversing a Trunk port must be "tagged" so the receiving switch knows what VLAN to associate that traffic to.
802.1q - open standard for how to tag Layer 2 frames
Native VLAN - The one VLAN which traverses a Trunk/Tagged link without a VLAN tag
#vlans #networking #ccna