Difference between revisions of "VLAN"
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* VLANs segregate subnets, but subnets are not securely isolated. | * VLANs segregate subnets, but subnets are not securely isolated. | ||
* VLANs make provisioning, routing subnets easier. | * VLANs make provisioning, routing subnets easier. | ||
Revision as of 15:16, 25 August 2008
- VLANs segregate subnets, but subnets are not securely isolated.
- VLANs make provisioning, routing subnets easier.
- VLANs make moving physical subnets easier. They can maintain their virtual topology, but be physically relocated.
- VLANs can be created at the layer 2 level (based on MAC addresses) which is simpler but can't cross switches.
- VLANs can be created at the layer 3 level (based on IEEE 802.1q packet tagging) which allows more flexible routing over dumb switches.
