Refer To The Exhibit. Which Implementation Of Inter-Vlan Routing Does This Topology Use?

Refer To The Exhibit. Which Implementation Of Inter-Vlan Routing Does This Topology Use?

The router on stick implementation of inter VLAN routing will be used. Now let us learn about the inter VLAN Routing in detail. Normally we know that each VLAN will be different and will be isolates the broadcast domain. All the hosts which are present on the separate VLAN I will not able to communicate even if they are connected to the same side of the switch.

But the Communications between all these different VLANs will be used in many different cases. Or simply we can say that we need to find various ways in order to route the traffic through different VLANs. Hence this concept is called inter-VLAN routing.

Now let us know about the different options of inter-VLAN routing. Firstly we can use the traditional approach, for this we need the physical router and we connect these to each VLAN to the different physical router interfaces. Let’s say we have 3 VLANs that are connected to the single switch, they are VLAN 10,vlan20, and VLAN 30. Each of these VLANs has its own physical link that is connected to different physical router interfaces.

Hence, with this type of approach, the router doesn’t need to know about the VLANs. It simply will treat it as a single VLAN. Here, if the VLAN device will send the packet to the VLAN 30 device, then the switch will deliver this packet to the router through the VLAN 10 links.

And the router will forward this packet to the switch through the VLAN 10 device link.

Then, the switch will forward this to the VLAN 30 device. Here, routing and switching can be achieved by this. But this traditional approach will be having some of the limitations as usual. Here, the number of physical interfaces that are present on the router will be very limited and very expensive. Here, we will need every cable that is going from the switch to the router to every single VLAN. This type of method will normally work with two or three VLANs. Even then it is a very challenging process on a large network.

In order to overcome this limitation, we will move to another option. That is called a router on a stick. This router on your stick is a type of setup that consists of a Router and a switch that are connected by using an ethernet link that to be configured as an 802.1 Q trunk. Here the router should understand the concept of VLAN and the concept of IEEE 802.11 q standard.

Here, in the traditional approach when each of the cables that are moving from one switch to the router can be configured as an access link. But with the presence of a route on a stick the inter VLAN routing will be able to configure one of the single links as a trunk.

In a physical manner, we will be having only one interface on the router. But many of the logical sub-interfaces will be created.