For more information about networ k, internet, firewall, and vpn t echnologies, see the links to the netgear website in appendix b, related. Example for switching an interface between layer 2 and layer 3. Spanning tree protocol overview the plugandplay spanning tree protocol stp, a layer 2 protocol that ensures a loop free topology in bridged lans, has been around for decades. Seethecisconexus7000seriesnxoshighavailabilityandredundancyguideforcompleteinformation onhighavailabilityfeatures. The book opens by discussing layer 2 vpn applications utilizing both atom and l2tpv3 protocols and comparing layer 3 versus layer 2 providerprovisioned vpns. Layer 2 switching switching uses the hardware address of devices on a lan to segment the network. Bridging involves segmentation of localarea networks lans at the layer 2 level. The extremeswitching 200 series is an economical, fixed configuration family of gigabit ethernet layer 2 3 switches designed for enterprises, branch offices, and small to mediumsized businesses looking for key features in a flexible, yet easytomanage solution. For example in layer 3 switch i will setup vlan 100 as 10. This manual is written for the managed layer 2 switch according to these specifications.
Cisco switch commands cheat sheet cli cisco switches can be used as plugandplay devices out of the box but they also offer an enormous amount of features. A switch operating as a network bridge may interconnect devices in a home or office. The ip address of the switch, subnet and global gateway are just like your computers address. Although the main purpose of the switch is to provide interconnectivity in layer 2 for the connected devices of the network, there are myriad features and functionalities that can be. This book is designed to provide information about the cisco certified. Switches and bridges are used for layer 2 switching. If the neighboring interface supports trunking and is configured to trunk mode or dynamic desirable mode, the link becomes a layer 2 trunk. In most cases a hybrid approach where wireless vlans are spanned across all floors of the same building with the other vlans wired etc being closet. Its only used when you use the switch to ping something or telnet into it, things like that.
Please note that the simulatorsemulators used in this course are not part of the course. A tree which must be sure to span so packets can reach every lan. Understanding basic layer 2 switching part 1 duration. Layer 2 switches do not decrease the amount of broadcast traffic, do not increase the amount of network collisions and do not increase the number of dropped frames. It is recommended that adopting free resource related. Cisco nexus 5000 series nxos layer 2 switching configuration guide, release 4. Fun with ethernet switches sean convery, cisco systems. Layer 2 vpn with mikrotik, ye wint aung agb communication, myanmar. I will explain the technology and media access control method for ethernet networks, network segmentation, switching concepts and the operation of cisco switches. Managed layer 2 switches gsm7224r and gsm7248r hardware. Quickly identify the recommended cisco catalyst layer 2 and 3 fixed configuration switch using this easytofollow selection guide. Since its layer two it doesnt really care about ip addresses in the routing since. Managed layer 2 switches gsm7224r and gsm7248r hardware installation guide ii v1.
This article covers basic and advanced configuration of cisco catalyst layer 3 switches such as the cisco catalyst 3560g, 3560e, 3560x, 3750, 3750e, 3750x, 3850 and 4500 series, and extends to include the configuration of additional features considered. S1 is a layer 2 switch, so it makes forwarding decisions based on the layer 2 header. Mar, 20 first, if we want to classify a switch by the osi model, then it is a data link layer device. Layer 2 switching or data link layer switching is the process of using devices mac addresses to decide where to forward frames. The layer 2 bridging functions include integrated routing and bridging irb for support for layer 2 bridging and layer 3 ip routing on the same interface, and virtual switches that isolate a lan segment with its spanningtree protocol instance and separate its vlan id space. A similar phenomenon is in progress with layer 2 l2 and layer 3 l3 switching today.
May 20, 2015 for the proposed scenario the distribution and aggregation layer will be combined on the same layer 3 switch to keep the design simple and for better understanding. It describes how to implement flow control and load sharing, isolate uses in the same vlan, eliminate layer 2 loops, divide vlans, and modify vlan tags for packets. Layer 2 vlans overview techlibrary juniper networks. In what situation would a layer 2 switch have an ip address configured. Catalyst 3xx series only functions lan base ip base ent erprise access layer 2 complete access layer 2 wide range of layer 2 access features for enterprise deployments supports all cisco catalyst 2000 and.
Ruggedcom layer 2 switches rugged and reliable our layer 2 ethernet switches are specifically designed to operate reliably in industrially harsh environments and are available in compact and rackmounted form factor. Complete the steps in the configuring a lan port for layer 2 switching section on page 107. A virtual wire interface supports appid, userid, contentid, nat and decryption. Spanning tree protocol stp, a layer 2 protocol that ensures a loopfree topology in bridged lans, has been. Switches are layer 2 devices and are therefore relatively easy to configure in. It uses hardware based switching techniques to connect and transmit data in a local area network lan. Network diagram the diagram above shows one layer 3 switch used for aggregation, three layer 2 switches used for access purposes and one router for internet connectivity. Clearing layer 2 configuration, page 158 configuring an ethernet interface as a layer 2 trunk note the default for layer 2 interfaces is switchport mode dynamic auto. In addition to describing the concepts related to layer 2 vpns, this book provides an extensive collection of case. Jan 24, 2019 layer 2 vpn with mikrotik, ye wint aung agb communication, myanmar. Create a basic switch configuration, including a name and an ip address. How to configure a cisco layer 3 switchintervlan routing. The main reason for using hyperterminal is that it is free and comes with. Company x has several departments grouped on several levels in a building.
Posted in cisco switches catalyst switch configuration. Configuring bridge domains as switches for layer 2 trunk ports 46 iii. How do i configure the cisco 4331 routers ethernetinternal interface to communicate with a smx layer 23 etherswitch service module. Prerequisite access and trunk ports normally, routers are used to divide broadcast domain and switches at layer 2 operates in a single broadcast domain but switches can also divide broadcast domain by using the concept of vlan virtual lan vlan is logical grouping of devices in same or different broadcast domain. Layer 2 switches do not decrease the amount of broadcast traffic, do not increase the amount of network. A network switch also called switching hub, bridging hub, officially mac bridge is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device a network switch is a multiport network bridge that uses mac addresses to forward data at the data link layer layer 2 of the osi model. Preface the h3c s5830 documentation set includes 10 configuration guides, which describe the software features for the s5830 switch series and guide you through the software confi. A layer 2 network device is a multiport device that uses hardware addresses, mac address, to process and forward data at the data link layer layer 2. Configuration guide of layer3 managed switch planet technology. The website was founded in late 2009 with the goal of providing free cisco ccna labs that can be completed using the gns3 platform. A maclevel switch operates in layer 2 of the osi model and can also operate in a combination of layers 2 and 3.
Bridging technology has been around since the 1980s and maybe even earlier. Inter vlan routing by layer 3 switch geeksforgeeks. Layer 2 switch is a network device that forwards traffic based on mac layer ethernet or token ring addresses. A layer 2 switch is a type of network switch or device that works on the data link layer osi layer 2 and utilizes mac address to determine the path through where the frames are to be forwarded. Industrially hardened 11 port managed ethernet switch with 3. If multiple networks are connected to a switch, you need to specify how the switch forwards the internetwork frames, because.
On a layer3capable switch, the port interfaces work as layer 2 access ports by default, but you can also configure. Upon detection of an invalid mac the switch can be configured to block only the offending mac or just shut. Make sure your network is free of physical loops before disabling. The series provides nonblocking gigabit per port performance and include either 2. In 2008 free ccna workbook originally started as a sharable pdf but quickly evolved into the largest ccna training lab website on the net. The extremeswitching 200 series is an economical, fixedconfiguration family of gigabit ethernet layer 23 switches designed for enterprises, branch offices, and small to mediumsized businesses looking for key features in a flexible, yet easytomanage solution. Unfortunately this means if one layer is hacked, communications are compromised without the other layers being aware of the problem. The layer 2lan switching configuration guide describes lan switching fundamentals and configuration.
Cisco switch layer2 layer3 design and configuration. Adding a layer 2 switch to a network increases the number of collision domains and increases the size of the broadcast domain. Some ios version may require a manual shutdown command before entering the no shutdown. Configure ip addresses of layer 3 ethernet interfaces as gateway addresses. Switches are layer 2 devices and are therefore relatively easy to configure in comparison to routers. This course is several hours in length and will cover layer 2 switching in detail. A network device that forwards traffic based on layer 3 information at very high speeds. From the html or pdf version of the manual, copy a configuration. Brocade fastiron sx series switches brocade fastiron sx series switches. Switching break up large collision domains into smaller domain and that a collision domain is a network segment with two or more devices sharing the. Of course, the output interface in our case is vlan1, as it is the ip interface associated with the virtual lan, in which the port connecting to the router is in. For international or directdial options in countries without tollfree numbers, see. Then to physically connect each layer two switch to the layer 3 switch i will use port 24 from each layer 2 switch to the layer 3. I am a proponent of l3 access layer design but the two issues that need to be considered are cost of the access layer switch with l3, and layer 3 wireless roaming when aps are in flex connect mode.
They break up one large collision domain into multiple smaller ones. How to configure a cisco layer 3 switchintervlan routing networks training. The vwire deployment options overcome the limitations of tap mode deployment, as engineers are able to monitor and control traffic traversing the link. Planet disclaims liability for any inaccuracies or. Spanning treeenabled switches go through a root election process based on bridge p rotocol data unit. When it comes to networking, layer 2 can be a very weak link physical links mac addresses ip addresses protocolsports application stream application. Part 2 basic switch concepts and configuration duration. Spanning tree protocol in layer 2layer 3 environments. Cisco catalyst layer 2 and layer 3 fixedconfiguration. The departments are callenter, sales, accounting, support and management. Overview of vpn vpn types supported by mikrotik l2 vpn and l3 vpn point to point type and point to multi point type of vpn l2.
In a typical lan, all hosts are connected to one central device. For the proposed scenario the distribution and aggregation layer will be combined on the same layer 3 switch to keep the design simple and for better understanding. Preventing layer 2 loops with bpdu guard free ccna workbook. The diagram above shows one layer 3 switch used for aggregation, three layer 2 switches used for access purposes and one router for internet connectivity. The brocade fastiron sx series of layer23 switches provide a superior scalable foundation for improved operational efficiency and faster response to business opportunities today and into the future, extending control from the network edge to the backbone with intelligent network services, including. Layer 2 network design guidelines always connect hierarchically if there are multiple switches in a building, use an aggregation switch locate the aggregation switch close to the building entry point e. Cisco nexus 5000 series nxos layer 2 switching configuration. Layer 2 network design network startup resource center. Neither interface ethernetinternal 100 nor interface ethernetinternal 101 have the ip address command available. Switch configuration by the end of this session, you will be able to. Layer 2 vpn architectures is a comprehensive guide to consolidating network infrastructures and extending vpn services. From a technology perspective, l2 switches are similar to bridges and have similar characteristics. Traditionally, routers, which inspect layer 3, were considerably slower than layer 2 switches. May 31, 2017 cisco nexus 5000 series nxos layer 2 switching configuration guide, release 4.
You can configure one or more vlans to perform layer 2 bridging. Configure hp layer 3 switch to two hp layer 2 switches to use. Configure hp layer 3 switch to two hp layer 2 switches to. Over the last three years the l2 switch market has grown from nonexistent to one worth multiple billions of dollars. They break up one large collision domain into multiple smaller ones in a typical lan, all hosts are connected to. Feb 06, 2016 in what situation would a layer 2 switch have an ip address configured. The bridge learns the mac address of each connected device. A layer 2 switch doesnt use the global gateway for routing any traffic. The brocade icx 6650 switch easily moves highperformance application data, but its benefits go far beyond speed. This document covers the vlan configurations for the below listed supermicro switch products. Iplevel switches operate in layer 3, layer 4, or a combination of the two.