Router on a stick explained
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Troubleshooting router-on-a-Stick Inter-VLAN Routing Configuration. The Router on a Stick network uses one connection between the router and the switch.
ROUTER ON A STICK EXPLAINED HOW TO
How to configure Inter-VLAN routing on Cisco Router ■ A router on a stick is configured with a subinterface for each VLAN and 802.1Q trunk ■ Inter-VLAN routing using a router on a stick utilizes an external router to pass traffic Router R1 has a separate interface configured for each of the VLANs. PC1 and PC3 are on different VLANs and have IP addresses on different subnets.ģ. The figure above show a traditional inter-VLAN routing:ġ Traffic from PC1 on VLAN10 is routed through router R1 to reach PC3 on VLAN 20.Ģ. In the Router on the stick method, both switch and router are needed but while using layer 3 switches, a single switch will perform inter-VLAN routing as well as the layer 2 functions (Vlan), therefore this method is cost-effective and also less configuration is needed. Devices on those VLANs communicates with each other via the router. When using a router to facilitate inter-VLAN routing, the router interfaces can be connected to separate VLANs. This subnet configuration enables the routing process in a multi-VLAN environment. One of the ways of the ways to carry out inter-VLAN routing is by connecting a router to the switch infrastructure. VLANs are associated with unique IP subnets on the network. We just have to create virtual interfaces for each VLAN and assign them IP Addresses from the same network. Configure router on a stick To enable inter-VLAN communication, you can divide a single physical interface on a router into logical interfaces that will be. The more simple way to do routing between VLANs is by using a Layer 3 Switch. There is a way to permit these computers to communicate it is called inter-VLAN routing. Hence, ‘Router on a Stick’ is a perfect solution for routing between VLANs with just one router interface. Servers and VMs however have NICs, they are what connects the server/VM to a switch/router. To allow devices connected to the various VLANs to communicate with each other, you need to connect a router.Īs we’ve learned that each VLAN is a unique broadcast domain, so, computers on separate VLANs are, by default, not able to communicate. Purpose-built routers do not have NICs, they have physical ports/interfaces, which can be used for many different applications, and internal (logical/virtual) interfaces that can be defined in software. In the previous pages, we learned about how to configure VLANs on a network switch. When using a table mounted router, use push sticks on narrow stock to distance your hands from the spinning bit. We define inter-VLAN routing as a process of forwarding network traffic from one VLAN to another VLAN using a router or layer 3 device.