> For the complete documentation index, see [llms.txt](https://docs.lan.kokomocloud.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lan.kokomocloud.com/application-note/application-note/vlan/untagged-vlan.md).
# タグなしVLAN
VLAN IDをタグなしVLANとしてポートに設定します。タグなしVLANフレームを送信する際は、そのフレームにマッピングされたVLAN IDが、タグなしVLANに設定されているポートからのみ送出されます。
スイッチのポート状態では「**U**」マークで表示されます。PCなど、VLANタグを処理できない端末が接続されているポートで設定します。
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# Agent Instructions
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## Querying This Documentation
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"
