A network engineer notices untagged frames being transmitted over an 802.1Q trunk link between two switches, causing unexpected traffic on certain network segments. To resolve this issue, which configuration setting on the trunk ports should the engineer adjust?
Native VLAN
Default VLAN
Management VLAN
Voice VLAN
In 802.1Q trunking, untagged frames are associated with the Native VLAN. The Native VLAN carries untagged traffic across trunk links. If untagged frames are causing unexpected traffic, adjusting the Native VLAN configuration on the trunk ports ensures untagged traffic is properly associated with the correct VLAN. This prevents traffic leakage into unintended network segments and enhances security. Adjusting the Management VLAN, Default VLAN, or Voice VLAN settings would not resolve issues specifically related to untagged frames on a trunk link.
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