KTI Networks KFS-2621 User Manual page 41

Note:
For the Tag-based mode, the ingress port of a received packet must be the member port of the matched VLAN.
Otherwise, the packet is dropped. If any VLAN uplink ports are set, the packet is forwarded to the unlink ports
instead. Refer to Section "Miscellaneous-> VLAN Uplink" for more details.
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