What Is Sub Interface?

1.	What Is Sub Interface?
Answer» To SUPPORT ISL or 802.1Q routing on a Fast ETHERNET interface, the router’s interface is divided into LOGICAL interfaces—one for each VLAN. These are called SUBINTERFACES. To support ISL or 802.1Q routing on a Fast Ethernet interface, the router’s interface is divided into logical interfaces—one for each VLAN. These are called subinterfaces.

Answer»

To SUPPORT ISL or 802.1Q routing on a Fast ETHERNET interface, the router’s interface is divided into LOGICAL interfaces—one for each VLAN. These are called SUBINTERFACES.

To support ISL or 802.1Q routing on a Fast Ethernet interface, the router’s interface is divided into logical interfaces—one for each VLAN. These are called subinterfaces.

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What Is Sub Interface?

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