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What is a disadvantage of router-on-a-stick?
The disadvantages to a Router on a Stick Network are: It is more complex to set up compared to other networks. Traffic between VLANs goes into the router and out of the router through the same port. The trunk is a major source of congestion.
Why use a router-on-a-stick?
Advantages. Networks that utilise router on a stick benefit from only requiring one LAN connection to be used for multiple VLANs, i.e. the number of VLANs are not limited by the number of LAN ports available. Separation of network connections do not respond to the physical location of the ports on the router.
How do I configure my router-on-a-stick?
Router on a Stick Configuration
- Use the interface type number.
- Use the encapsulation dot1q vlan_id command to enable 802.1Q trunking and associate each VLAN with the subinterface.
- Use the ip address address mask command to configure the IP settings.
Does router-on-a-stick require a VLAN trunk?
The router-on-a-stick method requires you to create a subinterface for each VLAN to be routed. A subinterface is created using the interface interface_id. subinterface_id global configuration mode command.
How to configure a router on a stick?
It’s possible to create sub-interfaces on a router. These are virtual interfaces and on each sub-interface we can configure an IP address, basically it looks like this: You can pick any number that you like but I decided to use the VLAN numbers, one sub-interface for VLAN 10 and another for VLAN 20.
What are the subinterfaces for router on a stick?
In the configuration in Example 4-6, the R1 G0/0/1 subinterfaces are configured for VLANs 10, 20, and 99. The router-on-a-stick configuration is complete after the switch trunk and the router subinterfaces have been configured. The configuration can be verified from the hosts, router, and switch.
How is a router on a stick routed between VLANs?
To route between VLANs, the R1 GigabitEthernet 0/0/1 interface is logically divided into three subinterfaces, as shown in Table 4-2. The table also shows the three VLANs that will be configured on the switches. Assume that R1, S1, and S2 have initial basic configurations.
Do you need a router to use a switch?
If you are familiar with switches and VLANs you might know that you require a router if you want to communicate between VLANs. In this lesson, I’ll show you how you can use a router connected to a single switch as a “router on a stick”.