How router is configured when there are 2 VLANs in router on stick inter VLAN method?
2 different VLANs have been created on the switch. The router’s interface is divided into 2 sub-interfaces (as there are 2 different VLANs) which will acts as a default gateway to their respective VLANs. Then router will perform Inter VLAN Routing and the VLANs will communicate with each other.
How do you interconnect two VLANs?
The simplest way to enable routing between the two VLANs to simply connect an additional port from each VLAN into a Router. The Router doesn’t know that it has two connections to the same switch — nor does it need to. The Router operates like normal when routing packets between two networks.
What is necessary for a router on a stick inter VLAN routing?
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. The subinterface syntax is the physical interface followed by a period and a subinterface number.
Why do we need inter-VLAN routing?
Regardless of the reason, hosts in one VLAN cannot communicate with hosts in another VLAN unless there is a router or a Layer 3 switch to provide routing services. Inter-VLAN routing is the process of forwarding network traffic from one VLAN to another VLAN.
Can 2 VLANs communicate?
Devices in different VLANs cannot communicate when only using layer 2 switches. In other words, a layer 2 switch allows devices in the same VLAN or subnet to communicate. Any VLAN to VLAN communication will not be allowed with just a layer 2 switch.
What is the advantage of router on a stick inter-VLAN routing?
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.
What is a disadvantage of using router on a stick inter-VLAN?
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.
Can you have 2 VLANs on the same port?
Since the purpose of VLAN tagging is to allow multiple VLANs on the same port, any port that has only one VLAN assigned to it can be configured as “Untagged” (the default) if the authorized inbound traffic for that port arrives untagged. A port can be a member of one untagged, port-based VLAN.
How to configure an inter VLAN router?
To configure inter-vlan routing, we need to configure the interface as sub-interfaces. According our diagram, we need to configure ge-0/0 for this. Let’s begin with, no shutdown command for the physical interfaces.
Which is the most scalable inter VLAN routing?
Layer 3 switch using switched virtual interfaces (SVIs): This is the most scalable solution for medium to large organizations. The first inter-VLAN routing solution relied on using a router with multiple Ethernet interfaces. Each router interface was connected to a switch port in different VLANs.
Which is better inter VLAN or multilayer switch?
The router-on-a-stick method of inter-VLAN routing also has some limitations, such as scalability and latency issues. To overcome these issues, Cisco developed a better alternative: The Multilayer Switch Inter-VLAN Routing.
How is an inter-VLAN SVI created in a switch?
Inter-VLAN SVIs are created the same way that the management VLAN interface is configured. The SVI is created for a VLAN that exists on the switch. Although virtual, the SVI performs the same functions for the VLAN as a router interface would.