VLAN Database Mode
Enter at enable prompt, not global configuration mode.
You must use the word ‘apply’ or ‘exit’ to have changes saved, otherwise VLANs will not show in database.
VLAN Design Rules
Keep core switches available purely for switching
VLAN scheme should keep broadcasts and multicasts away from core
End to end VLAN 80/20 rule 80 percent of the local traffic stays within the local area and the other 20 will traverse the network.
Local VLANs 20/80 – 20 local in scope and 80 percent to traverse network
Users are grouped by location with local VLAN design