What condition is required to enable Layer 3 switching?
- The Layer 3 switch must have IP routing enabled.
- All participating switches must have unique VLAN numbers.
- All routed subnets must be on the same VLAN.
- Inter-VLAN portions of Layer 3 switching must use router-on-a-stick.
Explanation: Some Layer 3 switches do not have an image loaded that supports Layer 3 switching; if it does, IP routing needs to be enabled by typing ip routing from global configuration mode. Layer 3 switches preclude the need for router-on-a-stick.
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