If you are CE participating in MPLS Configuration, then need Router. If you need to build tunnels between your offices, then you need router. If you are connecting ISP directly to provide Internet, then Router is box you need to deploy. If you need more through - put and direct access and interVLAN communication, Switch is best option. If you need to connect your inter - offices via L2 circuits by ISP, you can directly terminate link on Switch and Configure Routing on same. If you need to connect your Hub rooms and make 元 decision and more Ethernet interfaces are required for direct server form connectivity, you can use Switch. Layer 3 Switch & Router: When and Where To Use Now Let's look into when should Layer 3 Switch or Router be used.
Hardware / Software decision making key difference between Layer 3 Switches and Routers lies in hardware technology used to build unit.S Hardware inside Layer Switch merges with that of traditional Switches and Routers, replacing some of Routers ' Software logic with hardware to offer better performance in some situations. Router is front runner in such scenarios where WAN technologies such as Frame Relay or ATM need to be foster. However, when it comes to working on WAN and edge Layer 3 Switch lags behind. Wan technologies support Layer 3 Switch is limit To usage over LAN where Inter VLAN Routing can be perform. Flexibility Layer 3 Switches allow you to mix and match Layer 2 and Layer 3 switching, which means that you can configure Layer 3 Switch to operate normal Layer 2 Switch, or enable Layer 3 switching as require. Routers, on other hand, typically have much lower port density. Port density Layer Switches, have more higher port count. High performance Routers are typically much expensive than Layer 3 Switches. Performance versus cost, Layer 3 Switches are much more cost effective than Routers for delivering high speed interVLAN Routing. In case of switching router, it is primarily router that may use switching technology for speed and performance. Router Is Layer - 3 Device That Simply Does Routing Only. You cannot configure Inter VLAN on layer 2 switch.In general, Layer - 3 Switch is primarily switch that has been enhanced or taught some routing capabilities and it was conceived as technology to improve performance of routers used in large Local Area networks like corporate intranets. But, for this, you need layer 3 switches. This method allows you to configure Inter VLAN Routing in the switch itself. Instead of this, you can add all the VLAN in the single port of a router itself by creating virtual subinterfaces. For example, there is 10 VLAN then unlike traditional method you no need 10 physical port on a router. This method allows you to create subinterfaces on the single port of a router. This is the latest method and nowadays every network admin using this method. Router configuration in which a single physical interface routes traffic between multiple VLAN on a network is called router on a stick. For this reason, it is also cost-effective. For example, if there is 10 VLAN then your router must have 10 physical ports to configure Inter VLAN. In this method, you need separate physical interfaces for each VLAN. This is an old method and not in use nowadays. Inter VLAN can be configured in three different ways: Same like this, Inter VLAN routing allows you to communicate between two or more completely different VLAN in the same switch or other with the help of layer device Router. As we know that, VLAN trunk allows you to communicate between two or more same VLAN on different switches. Inter VLAN Routing is the process of forwarding network traffic from one VLAN to another VLAN using a router. Then what is Inter VLAN Routing, what are its types and its uses? I am going to explain everything in this post. As we know that, VLAN stands Virtual Local Area Network and it is used to divide a LAN into multiple segments.