What is the difference between a default VLAN and a native VLAN?
What will be an ideal response?
ANSWER: A default VLAN is typically preconfigured on a switch and initially includes all the switch's ports. Other VLANs might be preconfigured as well, depending on the device and manufacturer. The default VLAN cannot be renamed or deleted; however, ports in the default VLAN can be reassigned to other VLANs. A native VLAN receives all untagged frames from untagged ports. By default, this is the same as the default VLAN. However, this configuration poses a security risk when untagged traffic is allowed to travel in a VLAN-managed network. To protect the network from unauthorized traffic, the native VLAN should be changed to an unused VLAN so that untagged traffic essentially runs into a dead-end. Each switch port can be configured for a different native VLAN. However, switch ports on each end of a trunk should agree on the native VLAN assignment. If the ports don't agree, this is called a native VLAN mismatch, or just VLAN mismatch, and will result in a configuration error.
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