Multilayer Switching: SVI + Routed Ports

Switched Virtual Interfaces

Create SVI and set access ports into relevant VLAN ID/SVI ID. Standard stuff.. Default gateway for hosts in the VLAN will be the SVI itself. Of course!

Don’t forget to enable ip routing on MLS, directly connected networks/VLANs will now be in routing table and InterVLAN routing will be possible without the requirement for a routing protocol.

When ip routing is enabled, a static route should always be used for default traffic. (Gateway of last resort)

Routed Ports

Routed ports are physical L3 switch ports, as opposed to SVIs, which are logical. Another difference – routed ports don’t represent a particular VLAN as does as SVI.

You configure a routed port with a routing protocol such as OSPF or EIGRP in the exact same manner as you would on a router. That goes for protocol-specific commands as well as interface-specific.

Port is converted from a L2 port to a L3 port using the ‘no switchport’ command.

(How good does it feel to already know a lot of this stuff very well? It feels good! This is the 1st recap topic where I am very happy as I do this kind of stuff on a day to day basis)

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