What is a best practice for VLAN design?
- Local VLANs should not extend beyond the distribution layer.*
- Place unused access ports in trunk mode and in a speciﬁc VLAN.
- No more than three VLANs should be trunked to core layer switches.
- VLANs should be designed in a hierarchical fashion with access VLANs at the access layer and local server VLANs at the core layer.
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