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IBM Cloud: Classic InfrastructureのPortable/Static/Unrouted(None)の変更をした際の経路情報

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Last updated at Posted at 2025-12-19

1. はじめに

Classic Infrastructureのsubnetにおいて、Portable/Static/Unrouted(None)の変更を確認した記事を書いたことがあったが、それぞれの属性によってClassic Infrastructure外部にどのように経路広告されるのかを確認した。

Portable subnet

  • subnet設定 image.png
  • Transit Gatewayのroute table。subnetが外部に経路広告されている。 image.png

Static subnet

  • subnet設定image.png
  • Transit Gatewayのroute table。subnetが外部に経路広告されている。 image.png

None(Unrouted)

  • subnet設定image.png
  • Transit Gatewayのroute table。subnetは外部に経路広告されていない。 image.png
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