Cisco® Field Manual: Catalyst® Switch Configuration

Feature Example

The following example shows VLAN 20, VLAN 55, and VLAN 103 mapped to bridge groups within a Layer 3 switch (such as a 2948G-L3). Interfaces 1 through 4 on the Layer 3 device are to be mapped to VLAN 20, interfaces 11 and 12 are to be mapped to VLAN 55, and interfaces 25 and 26 are to be mapped to VLAN 103. Interface G 49 will provide the 802.1Q trunk connection to the Layer 2 switch. The switch will also be providing Layer 3 functions for VLAN 55 and VLAN 103. Figure D-1 shows the connections for this example. The configuration that follows would be entered on the Layer 3 switch.

L3Switch(config)#bridge 20 protocol ieee
L3Switch(config)#bridge 55 protocol ieee
L3Switch(config)#bridge 103 protocol ieee
L3Switch(config)#bridge ...