To reassign a port to the default VLAN (VLAN 1), use the no switchport access vlan
command in interface con?¬?guration mode.
Summary of Implementing VLANs and Trunks
The following list summarizes the key points that were discussed in this section.
?– A poorly designed network has increased support costs, reduced service availability,
and limited support for new applications and solutions.
NOTE You cannot change the VLAN number. To use a different VLAN number, create
a new VLAN using a new number and then reassign all ports to this VLAN.
NOTE Before deleting a VLAN, be sure to reassign all member ports to a different
VLAN. Any ports that are not moved to an active VLAN are unable to communicate with
other stations after you delete the VLAN.
40 Chapter 2: Medium-Sized Switched Network Construction
?– VLANs provide broadcast segmentation and organizational ?¬‚exibility.
?– Ethernet trunks carry the traf?¬?c of multiple VLANs over a single link and allow you to
extend VLANs across an entire network.
?– VTP is a Layer 2 messaging protocol that maintains VLAN con?¬?guration consistency.
Improving Performance with Spanning Tree
Most complex networks include redundant devices to avoid single points of failure.
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