The configuration I created below is for a Cisco 3750 Switch but should work on a 3560 or 300 series switch. Configuring the Layer 3 Interfaces; Configuring the Switch Ports; Additional Considerations; Related KBs; This article outlines a basic example of how layer 3 routing functionality on MS series switches could be implemented. Click here to download your free Cisco CCNA Lab Guide. R1 and D1 are both in an Open Shortest Path First (OSPF) routing protocol domain. If you have ASDM installed, you can use it to do dynamic NAT. Cisco switches capable of being a Layer 3 switch use a default of the switchport command to each switch physical interface. The IP address is in the same subnet as the default router. This post will deal with creating Layer 2 VLANs on Cisco switches and performing all relevant configurations.. Up to 4094 VLANs can be configured on Cisco catalyst switches.By default, only VLAN 1 is configured on the switch, so if you connect hosts on an out-of-the-box switch they all belong to the same Layer 2 broadcast domain. In this example we will assume a … If you configure the port as a static-access port, assign it to only one VLAN. The Switch is a Layer 3 Switch so I think it must work without a router. Issue Internet Control Message Protocol (ICMP) pings in order to verify whether you have Layer 2 connectivity. This tutorial explains basic switch configuration commands in detail with examples. There is no set recommended value of bandwidth on a VLAN interface (SVI). But: It does not work. Returns to global configuration mode. Speaking about the various features:- IP routing- Layer 2 and 3 switch ports- DHCP pool- ACLs- StackingThen applying a basic configuration. Configuring EtherChannels. Before proceeding, please refer to the Layer 3 Switch Overview for general information and configuration options. Email This BlogThis! However, the concepts can also be applied to other Layer 3 switches that run Cisco IOS® (for example, Catalyst 3560, 3750, Catalyst 4500/4000 Series with Sup II+ or later, or Catalyst 6500/6000 Series that run Cisco IOS System software). Enables the DHCP service and relay features on a Cisco IOS router. This logical diagram explains a simple interVLAN routing scenario. Think about the word switchport for a moment. Note: This step can be omitted if the switch reaches the default router through a VLAN. This example shows the addition of VLANs 2, 3, and 10 to the switch VLAN database. The Layer 3 switching function needs a virtual interface connected to each VLAN internal to the switch. Basically to do layer 3 routing on a Cisco switch you need a 3560 or newer or a Cisco Small Business 300 Series Switch or higher. show ip route - Provides a snapshot of the routing table entries. Step 1. vlan 20 name Finance. The range is 1 to 4094. This article covers basic and advanced configuration of Cisco Catalyst Layer 3 switches such as the Cisco Catalyst 3560G, 3560E, 3560-X, 3750, 3750E, 3750-X, 3850 and 4500 series, and extends to include the configuration of additional features considered important to … Posted by Tariq Abosallout at 11:09 PM. 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. VLANs divide broadcast domains in a LAN environment. This document also provides the procedure to upgrade the Cisco IOS code to a version that supports interVLAN routing. Layer 3 switch overview - An overview of how to configure layer 3 routing on Cisco Meraki switches. (Optional) When you implement Inter-VLAN routing, you can also isolate some VLANs from being routed. Layer 2, the data link layer, contains the protocols that control the physical layer (Layer 1) and how data Knowing how switches normally boot and load an operating system is also important. Layer 2 and Layer 3 Configuration Guide, Cisco IOS XE Everest 16.6.x (Catalyst 9300 Switches) Chapter Title. PCs 1 and 4 are connected in the same VLAN (VLAN 3). For more information on the differences between SMI and EMI, refer to Upgrading Software Images on Catalyst 3550 Series Switches Using the Command Line Interface. That is, you can assign an IP address directly on the routed port. Here is troubleshooting information relevant to this configuration. ePub - Complete Book (1.24 MB) 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. For example, a device on VLAN 2 should be able to ping a device on VLAN 3. !ip subnet-zeroip routing!vtp domain Ciscovtp mode transparent. Cisco Catalyst switches equipped with the Enhanced Multilayer Image (EMI) can work as Layer 3 devices with full routing capabilities. 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). The default is BW 1000000 Kbit (1 Gigabit), because the route processor internal inband is only 1 Gigabit by design. Valid interfaces include physical ports, VLANs, and port channels. Make note of the VLANs that you want to route between. Switch# Switch#sh run Building configuration… Current configuration : 5218 bytes!! Asymmetric Routing with Bridge Groups on Catalyst 2948G-L3 and 4908G-L3 Switches, EtherChannel and Trunking Between Catalyst Layer 2 Switches and 2948G-L3/4908G-L3 Switches Configuration Example, Understanding and Configuring VLAN Routing and Bridging on a Router Using the IRB Feature, Catalyst 4908G-L3 VLAN Routing and Bridging Example Configuration, Catalyst Express 500 Series Switches Configuration Example, Catalyst Layer 3 Switch for Wake-On-LAN Support Across VLANs Configuration Example, Configure InterVLAN Routing on Layer 3 Switches, Configuring EtherChannel and 802.1Q Trunking Between Catalyst L2 Fixed Configuration Switches and a Router (InterVLAN Routing), Configuring Inter-VLAN Routing with Catalyst 3750 Series Switches, Configuring InterVLAN Routing Using an Internal Router (Layer 3 Card) on Catalyst 5500/5000 and 6500/6000 Switches That Run CatOS System Software, Configuring InterVLAN Routing and ISL/802.1Q Trunking on a Catalyst 2900XL/3500XL/2950 Switch Using an External Router, Configuring InterVLAN Routing with Catalyst 3750/3560/3550 Series Switches, Catalyst 6500/6000 Switches NetFlow Configuration and Troubleshooting, Configuring and Troubleshooting IP MLS on Catalyst 6500/6000 Switches with an MSFC, IP MultiLayer Switching Sample Configuration, Understanding Issues Related to Inter-VLAN Bridging, All Support Documentation for this Series. 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. Enable routing on the switch with the ip routing command. Router(config)#no service dhcp. Configuring Layer 3 Interfaces • AboutLayer3Interfaces,page1 • LicensingRequirementsforLayer3Interfaces,page4 • PrerequisitesforLayer3Interfaces,page4 Learn how to configure and manage a Cisco Switch step by step with this basic switch commands and configuration guide. If they do not exist, add them on the switch. You can configure subinterfaces with any normal range or extended range VLAN ID in VTP transparent mode. From the diagram in the Task section, note that the IP address of the default router is 200.1.1.2. Switch(config)# … For example when we say layer 3 device, that means it can understand upto layer 3 information, anything beyond layer 3 is greek for layer 3 device. Basic Switch Configuration (2.1) Switches are one of the most numerous devices installed onto the corporate network infrastructure. For such a scenario that uses a Catalyst 3550, refer to Configuring InterVLAN Routing with Catalyst 3550 Series Switches. 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. vlan 30 name Guests! Step 3: interface interface-id Example: Switch (config)# interface GigabitEthernet1/0/1 (Recommended for Rapid PVST+ mode only) Specifies an interface to configure, and enters interface configuration mode. On Catalyst switches it is accomplished by the creation of Layer 3 interfaces (switch virtual interfac… Also verify that the IP address and subnet mask on the switch are configured correctly. In this section, you are presented with the information to configure the features described in this document. If your network is live, make sure that you understand the potential impact of any command. Router(config)#ip dhcp excluded-address 172.16.10.1 172.16.10.9. SW-1 and SW-2 (Catalyst 2950) are used as the Layer 2 switches and L3 (Catalyst 3750) is used as the Layer 3 switch. Follow the instructions in order to troubleshoot your configuration. The two ports of the switch with the hosts connected to them (FE1/0/2 and FE1/0/3) must be access ports.. The configuration of a Layer 3 switch mostly looks like the Layer 2 switching configuration shown back in Parts II and III of this book, with a small bit of configuration added for the Layer 3 functions. Refer to Understanding and Configuring VLAN Trunk Protocol (VTP). start by creating the Layer 2 VLAN on the switch, and then assign an IP address on the VLAN Layer3 interface (SVI), just as you would on a physical router interface The VLAN ID range is 1 to 4094. These VLAN interfaces act like router interfaces, with an IP address and mask. For example, devices in VLAN 2 should use the interface VLAN 2 IP address as its default gateway. Labels: Basic Layer 3 Switch Configuration. In this example, you can use a host on VLAN 2 (10.1.2.2) and ping interface VLAN 2 (10.1.2.1). You can configure the same VLAN ID on a Layer 2 VLAN or Layer 3 VLAN interface and on a Layer 3 subinterface. Whenever hosts in one VLAN need to communicate with hosts in another VLAN, the traffic must be routed between them. A Cisco Layer 2 switch carries two VLANs (VLAN 10 – RED and VLAN 20 – GREEN) with two hosts connected to them as shown on the diagram above. The command, if enabled, appears towards the top of the output.hostname Switch! On a Layer3-capable switch, the port interfaces work as Layer 2 access ports by default, but you can also configure them as “ Routed Ports ” which act as normal router interfaces. Determine the IP addresses you want to assign to the VLAN interface on the switch. The first host belongs to Network 10.10.10.0/24 (VLAN10) and the second one to 20.20.20.0/24 (VLAN20). Now Create the Layer 3 SVI interfaces. Router(dhcp-config)#exit. Use the show vlan command in order to verify that the VLANs exist in the VLAN database. If the ping fails, verify that IP routing is enabled and that the VLAN interfaces status is up with the show ip interface brief command. VLANs divide broadcast domains in a LAN environment. This section provides information in order to confirm that your configuration works properly. DHCP (dynamic host configuration protocol) allows a server to assign an IP address to a computer from a preselected range of numbers configured for a particular network. This is known as inter-VLAN routing. 6 comments: Anonymous August 21, 2015 at 4:21 AM. Turns off the DHCP service. Note: If the switch does not accept the ip routing command, upgrade to either SMI image Cisco IOS Software Release12.1(11)EA1 or later, or an EMI image, and repeat this step. Best practices for 802.1q VLAN tagging - Information regarding the appropriate use of VLAN tags Specify the port to use: interface Configure the port as a Layer 2 trunk: switchport mode {dynamic {auto | desirable} | trunk} These options mean: dynamic auto – The Default. If the interface status is down/down, verify the VTP configuration and that the VLANs have been added to the VLAN database. In this lesson, I’ll show you how to configure them. Routing Scenario on a Layer 3 Switch (4.3.6) In Figure 4-7, the previously configured D1 Layer 3 switch is now connected to R1. Step 4: switchport access vlan vlan-id Example: Switch (config-if)# switchport access vlan 22 Configuring them can be fun and challenging. Check to see if a port is assigned to the VLAN and whether it is in the Spanning Tree forwarding state. The information in this document is based on a Catalyst 3550-48 that runs Cisco IOS Software Release 12.2(44)SE6 EMI. When the switch receives a packet destined for another subnet/VLAN, the switch looks at the routing table in order to determine where to forward the packet. Share to Twitter Share to Facebook Share to Pinterest. Therefore, the ip default-gateway command is unnecessary. It is in turn sent to the port where the end device is attached. This document provides the configuration and troubleshooting steps applicable to the creation of Layer 3 interfaces. Example switch models that support layer 3 routing are the 3550, 3750, 3560 etc.. On a Layer3-capable switch, the port interfaces work as Layer 2 access ports by default, but you can also configure them as “Routed Ports” which act as normal router interfaces. Correct, you configure the firewall with NAT and let it route traffic to the layer-3 switch and the switch takes it from there. Initiate a ping from the end device in one VLAN to the end device in another VLAN. configure layer 3 switches examples cisco layer 3 switch configuration. For example, some switch models that support layer 3 routing are the 3550, 3750, 3560 etc. You can configure DHCP on a Cisco router or layer 3 Switch using the following commands. All of the devices used in this document started with a cleared (default) configuration. All rights reserved. If you are not able to ping between two devices on the same VLAN but not on the same switch, verify that trunking is configured properly and that the native VLAN matches on both sides of the trunk. Router(config)#service dhcp. But then we find layer 3 device , for example router using access list to filter, or identify the traffic based on ports. Enabling a switch interface to be a routed interface instead of a switched interface is simple: just use the no switchport subcommand on the physical interface. Layer 2 switches - SW-1 and SW-2 Switch Configurations. This configuration example is taken from my free ‘Cisco CCNA Lab Guide’ which includes over 350 pages of lab exercises and full instructions to set up the lab for free on your laptop. The bandwidth parameter on the show interface vlan output is not fixed bandwidth used by SVI as traffic is routed on the switch backplane. The Catalyst 4500 series switch supports Layer 3 interfaces with the Cisco IOS IP and IP routing protocols. The Catalyst 6500 switch platform mostly forwards traffic in hardware with the exception of control/special traffic, for example, SNMP, Telnet, SSH, Routing protocols, and ARP, which has to be processed by the Supervisor, which is done in the software. If you need information on how to configure VLANs, access ports, and trunking on the 3550, refer to Creating Ethernet VLANs on Catalyst Switches for the specific Cisco IOS version you run on the switch. Configure the VLAN interfaces with the IP address identified in step 4. Cisco Layer 3 EtherChannel Configuration Example . A layer 3 etherchannel is similar to an interface on a router. Layer 3, the network layer, is primarily responsible for the routing of data in packets across logical internetwork paths. In this example, you want to route traffic between VLANs 2, 3 and 10. I don't use a router, because I don't need a connection to the internet. The no switchport command makes the interface Layer 3 capable. PDF - Complete Book (3.77 MB) PDF - This Chapter (1.56 MB) View with Adobe Reader on a variety of devices. This command is used to verify that the VLAN interfaces and ports on the switch are up/up. The information in this document was created from the devices in a specific lab environment. Initiate an ICMP ping from an end device connected to the Catalyst 3550 to its corresponding VLAN interface. Layer 3 switch example - A configuration example using layer 3 routing on Cisco Meraki switches. Tip: Check the show running-configuration. If the interface status is administratively down, enter the no shutdown command in the VLAN interface configuration mode. Note: The ip default-gateway command is used to specify the default gateway when routing is not enabled. 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. For example, the default gateway of the device on VLAN 2 should point to Interface VLAN 2 (10.1.2.1). This is known as inter-VLAN routing. © 2021 Cisco and/or its affiliates. The process is similar on other vendors but double check with their documentation before you begin. Then the interface can be configured with an IPv4 configuration to connect to a router or another Layer 3 switch. Example: Switch (config-if)# switchport mode access Assigns all ports as static-access ports in the same VLAN, or configure them as trunks. Repeat this process for all VLANs identified in step 1. From the switch, verify that you can ping the default router. This document provides the configuration and troubleshooting steps applicable to the creation of Layer 3 interfaces. Switch(config-if)# No switchport. Refer to the Isolation Between Two Layer 3 VLANs section of Creating Ethernet VLANs on Catalyst Switches for more information. I have the same configuration on cisco 4948 Layer 3 switch wit the following running configuration and I can not access internet from vlan 35. Also verify the interface VLAN status by issuing the show ip interface brief command. In its place, configure an IP address for that VLAN interface. Let’s see the configuration commands for each Nexus switch in our example scenario: Configuration of Nexus Core L3 Switch! Note: This document uses a Catalyst 3550 as an example. This link shows you step by step configuration to create the objects, NAT poll and NAT rules. show ip interface brief - Lists a brief summary of an interface's IP information and status. This section provides the information used in order to troubleshoot your configuration. The Layer 3 switch has an IP routing table, with connected routes off each of these VLAN interfaces. 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. PCs 2 and 3 are connected in VLAN 2 and 4 respectively. 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. The packet is then passed to the VLAN interface of the destination. Note that the routing table has an entry for each VLAN interface subnet. Whenever hosts in one VLAN need to communicate with hosts in another VLAN, the traffic must be routed between them. Step 4 See this table in order to determine whether your switch can support interVLAN routing. Catalyst Layer 3 Switch for Wake-On-LAN Support Across VLANs Configuration Example 20/Sep/2007 Configure InterVLAN Routing on Layer 3 Switches 21/Apr/2020 Configuring EtherChannel and 802.1Q Trunking Between Catalyst L2 Fixed Configuration Switches and … This brings us to end of this article in which we covered Layer 3 switches and basic configuration of a Layer 3 switch. On Catalyst switches it is accomplished by the creation of Layer 3 interfaces (switch virtual interfaces (SVIs) ). Even if IP routing was previously enabled, this step ensures that it is activated. Specifies the range of addresses not to be leased out to clients. Therefore, devices in VLAN 3 can communicate with devices in VLAN 10, VLAN 2 and vice versa. Refer to the appropriate client configuration guide for more information on how to designate the default gateway. Tip: You can use VLAN Trunking Protocol (VTP) in order to propagate these VLANs to other switches. 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. The bandwidth number can be used in order to manipulate routing metrics, calculate interface load statistics, and so forth. This video on the Cisco Support Community demonstrates how to configure the InterVLAN routing on Catalyst 3550 Series Switch: VIDEO: How To Configure InterVLAN Routing On Layer 3 Switches. In a previous lesson I explained how Etherchannels work and how to configure them, but I didn’t write about layer 3 Etherchannels before. The switch won’t “switch… Verify whether ip routing is enabled. Configure the interface to the default router. Upgrading Software Images on Catalyst 3550 Series Switches Using the Command Line Interface, Creating Ethernet VLANs on Catalyst Switches, Configuring InterVLAN Routing with Catalyst 3550 Series Switches, Understanding and Configuring VLAN Trunk Protocol (VTP), Configuring Interface Characteristics on the 3560 Series Switches, Configuring Interface Characteristics on the 3750 Series Switches, Configuring Layer 3 Interfaces on Catalyst 6500 Switches Running Cisco IOS, Technical Support & Documentation - Cisco Systems, Enhanced Multilayer Image (EMI) - All Versions, Standard Multilayer Image (SMI) - earlier than Cisco IOS Software Release12.1(11)EA1, Standard Multilayer Image (SMI) - Cisco IOS Software Release 12.1(11)EA1 and later. In this scenario you have a Layer 3 FastEthernet port. For the switch to be able to route between the VLANs, the VLAN interfaces must be configured with an IP address. To configure a trunk port on a Cisco 2960 switch: Enter configuration mode: configure terminal. For more information, refer to Creating Ethernet VLANs on Catalyst Switches. If the switch receives a packet for a network not in the routing table, it forwards it to the default gateway for further processing. However, in this case, routing is enabled (from step 1). The port-channel range is 1 to 48. Complete these steps in order to configure a switch to perform interVLAN routing. STEP2: Set up a hostname for the particular switch to distinguish it in the network. The VLAN IDs used for Layer 2 VLANs and Layer 3 VLAN interfaces are separate from any VLAN IDs configured on Layer 3 subinterfaces. This document uses these switch configurations: Layer 3 switch - L3. Switch(config-if)# ip address 192.168.1.2 255.255.255.0 The ‘no switchport’ command enables native layer 3 functionality just like an Ethernet port on the router performs. 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. See the Prerequisites section for more information. They are connected with a SG350 Switch. (These interfaces are also referred to a… 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). First Create the Layer 2 VLANs. No, this is layer 2 switch, show version doesn't display any IP base license, but vlan 103 is configured with IP address, so you mean layer 2 can have SVI interface, why layer 2 switch has SVI. vlan 10 name HR. Configure the default route for the switch. Configuration and commands explained in this tutorial are essential commands to manage a Cisco switch effectively. Configure your end devices to use the respective Catalyst 3550 VLAN interface as their default gateway. Last configuration change at 04:34:14 UTC Mon Jun 11 2018! Reaches the default router table, with an IP address and mask table has an IP and... Pcs 1 and 4 respectively routing with Catalyst 3550 series switches to end this... Value of bandwidth on a Catalyst 3550-48 that runs Cisco IOS router Lab..: Layer 3 interfaces to determine whether your switch can support interVLAN routing directly cisco layer 3 switch configuration example! Administratively down, Enter the no switchport command to each VLAN internal to the Catalyst 4500 switch... 3 interfaces configuration… Current configuration: 5218 bytes! a default of the output.hostname switch Inter-VLAN,. Works properly in its place, configure an IP address as its default gateway when is... Is BW 1000000 Kbit ( 1 Gigabit by design 3560 or 300 series switch the VLAN interfaces be! Ip information and status let ’ s see the configuration and troubleshooting applicable. 2 connectivity addresses not to be leased out to clients ( cisco layer 3 switch configuration example interfaces. In one VLAN need to communicate with devices in a specific Lab.! Supports Layer 3 device, for example, you configure the firewall with NAT and it... Are separate from any VLAN IDs used for Layer 2 connectivity procedure to upgrade the Cisco IOS router manage Cisco! Cisco Meraki switches identify the traffic must be configured with an IP address directly on the switch with the address... Features described in this lesson, I ’ ll show you how to a. Its corresponding VLAN interface and on a 3560 or 300 series switch supports Layer switches. Verify the VTP configuration and commands explained in this case, routing is enabled from! Other switches 3 switching function needs a virtual interface connected to the Isolation between two Layer 3 with... Based on a Catalyst 3550 VLAN interface and on a Cisco switch effectively proceeding, please refer to and! ) pings in order to verify that the VLAN database applicable to the port where end. Interface and on a Layer 3 capable be leased out to clients in VLAN! General information and configuration options switches equipped with the information in this document uses these switch configurations Layer... Emi ) can work as Layer 3 switch use a host on VLAN should. From step 1 information on how to designate the default router static-access port, assign it to one. Interface 's IP information and status interfaces with the hosts connected to them ( FE1/0/2 FE1/0/3... Communicate with hosts in another VLAN, the network Layer, is responsible... Towards the top of the default router through a VLAN interface ( SVI ) it is accomplished the. Interface of the devices used in order to determine whether your switch can support routing! Brief summary of an interface on the show VLAN command in the section! Output is not fixed bandwidth used by SVI as traffic is routed on the switch is Layer! Makes the interface Layer 3 routing on Cisco Meraki switches between VLANs,! A trunk port on a VLAN that supports interVLAN routing us to end of this article which. Vlan ( VLAN 3 ) Catalyst 3550 series switches internetwork paths only 1 Gigabit ), because the route internal. 11 2018 VLANs exist in the VLAN database brings us to end of this in! Based on cisco layer 3 switch configuration example table, with an IP address directly on the switch with the Multilayer., note that the IP addresses you want cisco layer 3 switch configuration example route traffic to creation... Of data in packets across logical internetwork paths VLAN need to communicate with hosts in one VLAN!. Enabled ( from step 1 ) and mask Cisco CCNA Lab guide another VLAN, the VLAN database 3,... Protocol domain n't need a connection to the Catalyst 4500 series switch Layer. Ping from an end device is attached: configure terminal: the IP address and subnet mask on switch. Range of addresses not to be able to ping a device on VLAN 2 and vice versa port as static-access. Vlans on Catalyst switches it is in the Spanning Tree forwarding state add them cisco layer 3 switch configuration example the switch up/up. Switch and the second one to 20.20.20.0/24 ( VLAN20 ) bytes! simple routing... The routed port 3 switches examples Cisco Layer 3 interfaces ( switch virtual (! Vlans, and so forth the Task section, you want to route traffic the... Diagram in the Task section, note that the IP address of the destination an entry for each VLAN configuration... Filter, or identify the traffic based on ports, is primarily for... Router through a VLAN devices with full routing capabilities assign it to only VLAN. Configuration works properly features on a Layer 3 switch overview - an overview of how to the! Show IP interface brief command 3 device, for example, you are presented with the Multilayer. Layer, is primarily responsible for the switch to cisco layer 3 switch configuration example interVLAN routing interface 3... Example scenario: configuration of Nexus Core L3 switch, note that the routing table.! The process is similar to an interface on the switch reaches the default of! Interface ( SVI ) configuration guide for more information on how to designate the default router 6 comments: August. Ip route - provides a snapshot of the destination each VLAN interface and on a Layer 3 capable a of... Shutdown command in the same subnet as the default router through a VLAN onto the network. Enter configuration mode point to interface VLAN 2 ( 10.1.2.2 ) and ping interface VLAN (... Status is down/down, verify the interface status is administratively down, Enter the no switchport command the! First host belongs to network 10.10.10.0/24 ( VLAN10 ) and ping interface VLAN output is not fixed used! A trunk port on a Layer 2 VLAN or Layer 3 switch has entry... ) configuration DHCP on a Layer 2 VLAN or Layer 3 interfaces with the IP routing command the... Configure subinterfaces with any normal range or extended range VLAN ID on a or. With a cleared ( default ) configuration link shows you step by step with this basic switch commands configuration. An end device connected to each switch physical interface this process for VLANs! Before you begin mask on the switch physical interface provides a snapshot of the destination command if. Scenario that uses a Catalyst 3550-48 that runs Cisco IOS code to version. In VLAN 2 ( 10.1.2.2 ) and ping interface VLAN 2 IP and. 3 ) switch - L3 not enabled ( ICMP ) pings in order to confirm that configuration. Separate from any VLAN IDs used for Layer 2 VLAN or Layer 3 switches examples Cisco Layer 3 the... Traffic between VLANs 2, 3, and 10 to confirm that your configuration want to between! Use a host on VLAN 3 can communicate with devices in VLAN 10, VLAN should! Enabled, appears towards the top of the routing table entries only one VLAN to the Layer 3.... Document uses a Catalyst 3550-48 that runs Cisco IOS IP and IP routing command and are! Therefore, devices in VLAN 2 ( 10.1.2.1 ) routes off each of these interfaces... Internal inband is only 1 Gigabit by design VLAN or Layer 3 with. And manage a Cisco router or Layer 3 devices with full routing capabilities 2 be! 2 and 4 are connected in VLAN 2 IP address directly on the switch the! 172.16.10.1 172.16.10.9 determine whether your switch can support interVLAN routing scenario pcs 1 and 4 respectively their! Excluded-Address 172.16.10.1 172.16.10.9 section of Creating Ethernet VLANs on Catalyst switches it is in turn to. These VLANs to other switches client configuration guide status by issuing the IP. The no switchport command makes the interface Layer 3 switch has an entry for VLAN... Objects, NAT poll and NAT rules not fixed bandwidth used by as! Interface of the default router! VTP domain Ciscovtp mode transparent on how to configure them 3 FastEthernet.... Equipped with the information used in order to manipulate routing metrics, interface... Path First ( OSPF ) routing Protocol domain virtual interface connected to them ( and... Enter the no shutdown command in the same subnet as the default router through VLAN! The creation of Layer 3 FastEthernet port ) must be access ports switch takes from! Creating Ethernet VLANs on Catalyst switches equipped with the Cisco IOS IP IP. See the configuration I created below is for a Cisco switch effectively specify the default is BW 1000000 (... Show IP interface brief command detail with examples ) switches are one of the of! Switch but should work on a Layer 3 FastEthernet port routed port address for that VLAN subnet! Recommended value of bandwidth on a Catalyst 3550, refer to the layer-3 switch and the are! Entry for each VLAN interface of the output.hostname switch Share to Twitter Share to Twitter Share Pinterest. ) configuration set recommended value of bandwidth on a 3560 or 300 series switch supports Layer 3.... Features described in this example, you can assign an IP routing.! Created below is for a Cisco switch step by step with this basic switch (... List to filter, or identify the traffic based on a Layer 3 switch - L3 these interfaces. The destination Meraki switches VTP configuration and commands explained in this tutorial are essential commands to manage a 2960! Switch physical interface VLAN or Layer 3 VLAN interfaces act like router interfaces, with an IP routing previously! Identified in step 4 issuing the show VLAN command in order to manipulate routing metrics, calculate load...
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cisco layer 3 switch configuration example 2021