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Home Documentation Junos OS イーサネットスイッチングユーザーガイド レイヤー 2 ブリッジング インターフェイスの設定

イーサネットスイッチングユーザーガイド

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レイヤー 2 ブリッジング インターフェイスの設定

date_range 19-Jan-25
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統合型ルーティングおよびブリッジング インターフェイスは、ブリッジ ドメイン(VLAN)間でトラフィックをルーティングする論理レイヤー 3 VLAN インターフェイスです。そのため、IRB 論理インターフェイスは通常、ブリッジ ドメインまたは VLAN に関連付けられます。IRB論理インターフェイスは、同じVLANに関連付けられた同じサブネットワーク上の他のデバイスのゲートウェイIPアドレスとしても機能します。IRB インターフェイスは、同じインターフェイス上でレイヤー 2 ブリッジングとレイヤー 3 ルーティングをサポートします。その結果、IRB インターフェイスにより、ルーターはルーターとレイヤー 2 スイッチの両方として同時に機能できます。

注:

ブリッジ ドメイン内のすべてのレイヤー 2 論理インターフェイスのステータスがダウンしている場合、 irb 論理インターフェイスのステータスもダウンしています。

IRB論理インターフェイスを設定するには、次の手順に従います。

  1. 設定モードで、[edit bridge-domains]階層レベルで、ブリッジ名とVLAN IDを指定してブリッジドメインを設定します。
    content_copy zoom_out_map
    [edit bridge-domains]
user@host# set bridge-domain-name vlan-id vlan-id
  2. トランクモードでインターフェイスを設定し、[edit interfaces] 階層レベルで vlan-id-list コマンドを使用して、インターフェイスを適切なブリッジドメインに含めます。
    content_copy zoom_out_map
    [edit interfaces]
user@host# set interfacetype-fpc/pic/port vlan-tagging
user@host# set interfacetype-fpc/pic/port unit logical-unit-number family bridge interface-mode trunk
user@host# set interfacetype-fpc/pic/port unit logical-unit-number family bridge vlan-id-list vlan-id
  3. IRB インターフェイスを [edit interfaces] 階層レベルで設定し、関連する IP アドレスを指定します。
    content_copy zoom_out_map
    [edit interfaces]
user@host# set interfaces irb unit logical-unit-number family inet address address
  4. IRB インターフェイスを [edit bridge-domains] 階層レベルでブリッジ ドメインのルーティング インターフェイスとして設定します。
    content_copy zoom_out_map
    [edit bridge-domains]
user@host# set bridge-domain- name vlan-id vlan-id routing-interface irb.logical-interface-number

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