We use cookies to ensure you have the best browsing experience on our website. See this table in order to determine whether your switch can support interVLAN routing.For more information on the differences between SMI and EMI, refer to This document assumes that Layer 2 has been configured and that the devices within the same VLAN connected to the 3550 communicate with one another. PC1-192.168.1.10/24, PC2-192.168.1.20/24, PC3 – 192.168.2.10/24, PC4-192.168.2.20/24.Now creating vlans on layer 3 switch namely vlan 2 on the switch ports fa0/1, 2 and fa0/3, 4 for vlan 3.Now creating SVI for vlan 2 giving it IP address 192.168.1.1/24 and SVI for vlan 3 giving IP address 192.168.2.1/24The packet is first delivered to switch then to the destination. Also verify the interface VLAN status by issuing the If the interface status is administratively down, enter the If the interface status is down/down, verify the VTP configuration and that the VLANs have been added to the VLAN database. Configure Inter-VLAN Using Layer 3 Switches. Get hold of all the important DSA concepts with the If you like GeeksforGeeks and would like to contribute, you can also write an article using Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.
Giving IP address to All hosts. Therefore, devices in VLAN 3 can communicate with devices in VLAN 10, VLAN 2 and vice versa. If the ping fails, verify that IP routing is enabled and that the VLAN interfaces status is up with the Initiate a ping from the end device in one VLAN to the end device in another VLAN. For the switch to be able to route between the VLANs, the VLAN interfaces must be configured with an IP address. The hosts PC1, PC2 will be in Vlan 10 and PC3, PC4 will be in Vlan 20. Refer to the appropriate client configuration guide for more information on how to designate the default gateway.This section provides information in order to confirm that your configuration works properly.Note that the routing table has an entry for each VLAN interface subnet. Inter VLAN Routing on Layer 2 Switches. Before you attempt this configuration on a 3550 series switch, ensure that you meet these prerequisites:InterVLAN routing on the Catalyst 3550 has certain software requirements in order to support interVLAN routing on the switch. People ask me the question if you can route traffic between VLANs on Layer 2 switches. Follow the instructions in order to troubleshoot your configuration.Issue Internet Control Message Protocol (ICMP) pings in order to verify whether you have Layer 2 connectivity.If you are not able to ping between two devices on the same VLAN on the same switch, verify that your source and destination ports have devices connected to them and are assigned to the same VLAN. All rights reserved. 39 As the destination is present in other networks, the packet will be first delivered to switch which has a SVI for both vlans (acts as gateway). Assigning an IP address to VLAN is easy, only read the “Assigning IP address to VLAN” section at the end of this articles. The scenario can be expanded to include a multi-switch environment if you first configure and test inter-switch connectivity across the network before you configure the routing capability. For example, a device on VLAN 2 should be able to ping a device on VLAN 3. In this example, ping from VLAN 2 (10.1.2.1) to Interface VLAN 3 (10.1.3.1) or Interface VLAN 10 (10.1.10.1). If your network is live, make sure that you understand the potential impact of any command.In this section, you are presented with the information to configure the features described in this document.This logical diagram explains a simple interVLAN routing scenario. In this example, you want to route traffic between VLANs 2, 3 and 10.Determine the IP addresses you want to assign to the VLAN interface on the switch. The default route with the next hop 200.1.1.2 allows the switch to forward traffic to the gateway of last resort (for traffic the switch cannot route).This section provides the information used in order to troubleshoot your configuration.Here is troubleshooting information relevant to this configuration. The packet is then passed to the VLAN interface of the destination. If the ping test is successful in step 3, but fails to reach the end device on the other VLAN, verify that the default gateway on the connected device is configured correctly.If you are not able to reach the Internet or corporate network, verify that the default route on the 3550 points to the correct IP address on the default router. If you are not able to ping the interface, verify that the host's default gateway points to the corresponding VLAN interface IP address and that the subnet masks match. Inter VLAN routing on layer 3 switch without a router is also approachable with the development of technology. Check to see if a port is assigned to the VLAN and whether it is in the Spanning Tree forwarding state.Initiate a ping from an end device in one VLAN to the interface VLAN on another VLAN in order to verify that the switch routes between VLANs. On Catalyst switches it is accomplished by the creation of Layer 3 interfaces (switch virtual interfaces (SVIs) ).Catalyst switch models 3560, 3750, Catalyst 4500/4000 Series with Sup II+ or later, or Catalyst 6500/6000 Series that run Cisco IOS system software support basic InterVLAN routing features in all their supported software versions.
Giving IP address to All hosts. Therefore, devices in VLAN 3 can communicate with devices in VLAN 10, VLAN 2 and vice versa. If the ping fails, verify that IP routing is enabled and that the VLAN interfaces status is up with the Initiate a ping from the end device in one VLAN to the end device in another VLAN. For the switch to be able to route between the VLANs, the VLAN interfaces must be configured with an IP address. The hosts PC1, PC2 will be in Vlan 10 and PC3, PC4 will be in Vlan 20. Refer to the appropriate client configuration guide for more information on how to designate the default gateway.This section provides information in order to confirm that your configuration works properly.Note that the routing table has an entry for each VLAN interface subnet. Inter VLAN Routing on Layer 2 Switches. Before you attempt this configuration on a 3550 series switch, ensure that you meet these prerequisites:InterVLAN routing on the Catalyst 3550 has certain software requirements in order to support interVLAN routing on the switch. People ask me the question if you can route traffic between VLANs on Layer 2 switches. Follow the instructions in order to troubleshoot your configuration.Issue Internet Control Message Protocol (ICMP) pings in order to verify whether you have Layer 2 connectivity.If you are not able to ping between two devices on the same VLAN on the same switch, verify that your source and destination ports have devices connected to them and are assigned to the same VLAN. All rights reserved. 39 As the destination is present in other networks, the packet will be first delivered to switch which has a SVI for both vlans (acts as gateway). Assigning an IP address to VLAN is easy, only read the “Assigning IP address to VLAN” section at the end of this articles. The scenario can be expanded to include a multi-switch environment if you first configure and test inter-switch connectivity across the network before you configure the routing capability. For example, a device on VLAN 2 should be able to ping a device on VLAN 3. In this example, ping from VLAN 2 (10.1.2.1) to Interface VLAN 3 (10.1.3.1) or Interface VLAN 10 (10.1.10.1). If your network is live, make sure that you understand the potential impact of any command.In this section, you are presented with the information to configure the features described in this document.This logical diagram explains a simple interVLAN routing scenario. In this example, you want to route traffic between VLANs 2, 3 and 10.Determine the IP addresses you want to assign to the VLAN interface on the switch. The default route with the next hop 200.1.1.2 allows the switch to forward traffic to the gateway of last resort (for traffic the switch cannot route).This section provides the information used in order to troubleshoot your configuration.Here is troubleshooting information relevant to this configuration. The packet is then passed to the VLAN interface of the destination. If the ping test is successful in step 3, but fails to reach the end device on the other VLAN, verify that the default gateway on the connected device is configured correctly.If you are not able to reach the Internet or corporate network, verify that the default route on the 3550 points to the correct IP address on the default router. If you are not able to ping the interface, verify that the host's default gateway points to the corresponding VLAN interface IP address and that the subnet masks match. Inter VLAN routing on layer 3 switch without a router is also approachable with the development of technology. Check to see if a port is assigned to the VLAN and whether it is in the Spanning Tree forwarding state.Initiate a ping from an end device in one VLAN to the interface VLAN on another VLAN in order to verify that the switch routes between VLANs. On Catalyst switches it is accomplished by the creation of Layer 3 interfaces (switch virtual interfaces (SVIs) ).Catalyst switch models 3560, 3750, Catalyst 4500/4000 Series with Sup II+ or later, or Catalyst 6500/6000 Series that run Cisco IOS system software support basic InterVLAN routing features in all their supported software versions.