Inter-VLAN Routing Quiz

The 'router-on-a-stick' inter-VLAN routing method only requires one physical Ethernet interface to route traffic between multiple VLANs on a network. It involves configuring a Cisco IOS router Ethernet interface as an 802.1Q trunk and connecting it to a trunk port on a Layer 2 switch. The router interface is then configured using subinterfaces to identify routable VLANs, which are software-based virtual interfaces. Each subinterface is independently configured with an IP address and VLAN assignment, facilitating logical routing.

When VLAN-tagged traffic enters the router interface, it is forwarded to the VLAN subinterface. After a routing decision is made based on the destination IP network address, the router determines the exit interface for the traffic. If the exit interface is configured as an 802.1q subinterface, the data frames are VLAN-tagged with the new VLAN and sent back out the physical interface.

The 'router-on-a-stick' method of inter-VLAN routing does not scale beyond 50 VLANs.

<p>Subinterfaces are configured in software on a router and are associated with a single physical Ethernet interface. Each subinterface is independently configured with an IP address and VLAN assignment, and are configured for different subnets that correspond to their VLAN assignment.</p> Signup and view all the answers

<p>The steps include creating VLANs, creating SVI VLAN interfaces, configuring access ports, and enabling IP routing.</p> Signup and view all the answers

<p>Inter-VLAN routing using a Layer 3 switch is simpler to configure than the router-on-a-stick method.</p> Signup and view all the answers

<p>A routed port must be configured by disabling the switchport feature on a Layer 2 port.</p> Signup and view all the answers

<p>Troubleshooting inter-VLAN routing involves verifying subinterface status and VLAN assignments.</p> Signup and view all the answers

<p>Layer 3 switch D1 is connected to R1, both in an OSPF routing protocol domain, and OSPF configuration commands will be given in activities and assessments.</p> Signup and view all the answers

<p>Packet Tracer activity focuses on locating network problems, implementing the solution, and verifying network connectivity.</p> Signup and view all the answers

<p>The Troubleshoot Inter-VLAN Routing Lab involves building the network, loading device configurations, troubleshooting the Inter-VLAN Routing Configuration, verifying VLAN Configuration, Port Assignment, and Trunking, and testing Layer 3 Connectivity.</p> Signup and view all the answers

<p>The text ends with a module practice and quiz.</p> Signup and view all the answers

<p>To enable routing on a Layer 3 switch, a routed port must be configured by disabling the switchport feature on a Layer 2 port.</p> Signup and view all the answers

<p>A Layer 3 SVI must be created for each of the routable VLANs.</p> Signup and view all the answers

<p>SVIs are configured using the same command as used to create the management SVI on a Layer 2 switch.</p> Signup and view all the answers

<p>Layer 3 switch D1 is connected to two hosts on different VLANs: PC1 in VLAN 10 and PC2 in VLAN 20.</p> Signup and view all the answers

<p>Inter-VLAN routing is the process of forwarding network traffic from one VLAN to another VLAN.</p> Signup and view all the answers

<p>The three options are legacy, router-on-a-stick, and Layer 3 switch using SVIs.</p> Signup and view all the answers

<p>The steps include creating and naming the VLANs, creating the management interface, configuring access ports, and configuring trunking ports.</p> Signup and view all the answers

<p>A subinterface is created using the $interface\ interface_id\ subinterface_id$ global configuration mode command.</p> Signup and view all the answers

<p>The physical interface must be enabled using the $no\ shutdown$ interface configuration command.</p> Signup and view all the answers

<p>Layer 3 switches use switched virtual interfaces (SVIs).</p> Signup and view all the answers

<p>SVIs are configured using the $interface\ vlan\ vlan-id$ command.</p> Signup and view all the answers

<p>A routed port is created by disabling the switchport feature on a Layer 2 port that is connected to another Layer 3 device.</p> Signup and view all the answers

<p>Reasons include missing VLANs, switch trunk port issues, switch access port issues, and router configuration issues.</p> Signup and view all the answers

<p>A common cause is a misconfigured switch port, which could occur when the connecting router port is not assigned to the correct VLAN.</p> Signup and view all the answers

<p>The most common cause is a misconfigured trunk port.</p> Signup and view all the answers

<p>Use ping and show interfaces interface-id switchport commands to identify the problem.</p> Signup and view all the answers

<p>Advantages include faster hardware switching and routing, no need for external links to the router, and increased bandwidth using Layer 2 EtherChannels. The main disadvantage is that Layer 3 switches are more expensive than routers.</p> Signup and view all the answers

<p>SVI uses virtual interfaces on a Layer 3 switch to provide Layer 3 processing for packets, while Router-on-a-Stick involves logically dividing a router interface into subinterfaces to route between VLANs.</p> Signup and view all the answers

<p>The key steps involve creating and naming VLANs, creating the management interface, configuring access ports, configuring trunking ports, and configuring SVIs for inter-VLAN routing.</p> Signup and view all the answers

<p>Layer 3 switches use hardware-based switching to convert a Layer 2 switchport to a Layer 3 interface, allowing for higher-packet processing rates.</p> Signup and view all the answers

<p>Troubleshooting may be needed if devices in different VLANs cannot communicate. Potential issues include misconfigured SVIs, trunking, or VLANs, and incorrect routing settings.</p> Signup and view all the answers

<p>The main steps involve creating a subinterface for each VLAN to be routed, configuring it with encapsulation settings and IP address, and enabling the physical interface. Switches need to be configured with VLANs and trunking, and the router must be configured for inter-VLAN routing.</p> Signup and view all the answers

<p>Layer 3 switches use SVIs to route from one VLAN to another, and this method is considered faster and more scalable due to hardware-based switching and the ability to use multiple SVIs for routing between VLANs.</p> Signup and view all the answers

<p>The main limitation is the need to create a subinterface for each VLAN, which can become complex and less scalable for large networks. In contrast, Layer 3 switches can scale more effectively using SVIs for inter-VLAN routing.</p> Signup and view all the answers

<p>Subinterfaces are configured by logically dividing a router interface, and each subinterface needs to be configured with encapsulation settings and an IP address for routing between VLANs.</p> Signup and view all the answers

<p>Layer 3 switches provide faster hardware switching and routing, do not require external links to the router, and can use Layer 2 EtherChannels for increased bandwidth. They are more commonly deployed in campus LANs due to these advantages, despite being more expensive than routers.</p> Signup and view all the answers

<p>Advantages include faster hardware switching and routing, no need for external links to the router, and increased bandwidth using Layer 2 EtherChannels. SVIs contribute to the efficiency by providing a faster and more scalable method for inter-VLAN routing using hardware-based switching.</p> Signup and view all the answers