Cisco – Purpose of a Switch Routed Port

ciscointerfacerouter

From my Cisco CCNA documentation:

Routed ports are used for point-to-point links. Connecting WAN routers
and security devices are examples of the use of routed ports. In a
switched network, routed ports are mostly configured between switches
in the core and distribution layer. The figure illustrates an example
of routed ports in a campus switched network.

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I don't understand what are the benefit of having a routed port between the distribution and access, and more generally, the purpose of routed ports except for inter-VLAN routing like with the router-on-a-stick method (and even there, it seems that SVI are a better approach).

Best Answer

Routed Interface means it is a Layer3 physical Ports which is not supported to Layer 2 communications such as STP.

All Ethernet ports are routed interfaces by default.(in router) You can change this default behavior with the CLI setup script or through the system default switchport command.

Routed ports are supported to all routing protocols.

But don't misunderstand, SVI and routed interface. SVI is a virtual or logical interface which assigned to one VLAN. But Routed port is a Physical interface.

IP address assigning, enable routing and layer 3 functions can be done on Routed Interface.

Reference cisco

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