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Router on a Stick - Routing Fundamentals | Network Design | Repovive

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Network Design26 sections · 911 units44h total

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Router on a Stick

Single-arm routing

Router on a stick uses a single physical router interface with multiple subinterfaces to route between VLANs.

Configuration steps:

$1.$ Configure the switch port as a trunk

$2.$ Create subinterfaces on the router for each VLAN

$3.$ Assign IP addresses to each subinterface

Router(config)# interface GigabitEthernet0/0.10
Router(config-subif)# encapsulation dot1Q 10
Router(config-subif)# ip address 192.168.10.1 255.255.255.0

The "dot1Q" command specifies the VLAN tag. Each subinterface handles traffic for its VLAN.