Lets start the new year with understanding etherchannel which is having more than one link connected to a server, switch, or router and treating it like one logical link. Configuring an etherchannel link free ccna workbook. Etherchannel is a feature used to group multiple parallel links into one single logical interface. If the ports are operating in full duplex, the maximum theoretical bandwidth supported is as follows. Narrator etherchannel is a way to provideincreased bandwidth and redundancyto a switching environment for not a ton of money. Manually configured etherchannel ports do not exchange etherchannel protocol packets. Note cisco nxos does not support port aggregation protocol pagp for etherchannels. This is very helpful if we are running layer three down. Well then build an ec between live cisco switches and verify the config with. Lesson 04 how to connect and access a router or switch using console connection.
When setting up an etherchannel connection, remember the following points. Cisco confidentialbcmsn 7 1 11 pagp allows the switches to learn the capabilities of each interface assigned to an etherchannel bundle and reliably activates interfaces of similar configuration to form a port channel. Unless you are using cisco nexus vswitches lacp and pagp are not available features on your vswitches so any aggregated links need to be configured in the static mode on the cisco switches. The initial part of the network is t3 into the 3725 router, which will connect up to a vlan, where a firewall will also connect. When you want more speed all you need is etherchannel, etherchannel can be configured as a layer three logical interface instead of just sitting at layer two. All ports in an etherchannel must use the same protocol. To set etherchannel to use with of the protocols you will configure it to support one of the following modes. I dont know why they have that separate command, maybe someone else can chime in why thats even there. The switch ports grouped in an etherchannel in cisco switch, are treated as a single port. It allows grouping of several physical ethernet links to create one logical ethernet link for the purpose of providing faulttolerance and highspeed links between switches, routers and servers. Etherchannel, that etherchannel will be included in the total. Etherchannel is the subject of our next exam topics discussion.
Yes, im sticking with the term homotocol, and you cant stop me. The icnd2 exam validates a candidates ability to install, configure, operate, and. Chapter 7 configuring etherchannel on a cisco switch cisco packet tracer tutorials jul 29, 2018 no comments 5 5 1 vote configuring etherchannel on a cisco switch. The standard version is lacp link aggregation control protocol. Enough of the terminology and reasons for using the technology. If the remote switch port is configured with desirable then only it will form pagp etherchannel. Packet tracer configuring etherchannel objectives part 1. This is a faulttolerant technique that is becoming a common setup in highly available, core devices. D down p bundled in portchannel i standalone s suspended h hotstandby. Etherchannel is a tool that is used on the network to increase your bandwidth. Etherchannel negotiation an etherchannel can be established using one of three mechanisms. Sets the interface to actively attempt to negotiate a pagp connection on. Fast etherchannel allows multiple physical fast ethernet links to combine into one logical channel.
In 2008 free ccna workbook originally started as a sharable pdf but quickly evolved into the largest ccna training lab website on the net. It also seen as one link by spanning tree algorithms. Verify that interfaces fa010, fa011 and fa012 on sw1 formed a pagp etherchannel correctly. Cisco was the first to the table with an etherchannel implementation when they created pagp.
There are two versions of etherchannel in computer networking pagp and lacp. We can create an etherchannel on a standalone switch, on a single switch in the stack, or on multiple switches in the stack known as crossstack etherchannel. An etherchannel can be created from between two and eight active fast, gigabit or 10. Etherchannel is the cisco term for the technology that enables the bonding of up to eight physical ethernet links into a single logical link. Do not be afraid to enable it on a pair of ports and try it.
Cisco has come up with their own proprietary version call. Then the industry created its vendorneutral homotocol, lacp. Interface fa0 and fa014 are both in use for this etherchannel. In this tutorial, ill show you how to configure them. Link aggregation can be useful when interconnecting switches together and when interconnecting other devices to a switch, e. Forces the connection to bring all links up without using a protocol to. How to configure and verify etherchannels ether channels are designed to provide the fault tolerant high capacity links between servers, routers and switches. In this lab, you will configure port aggregation protocol pagp, a cisco etherchannel protocol, and link aggregation control protocol lacp, an ieee 802. Ciscos etherchannel solution allows you to bundle two or more physical ethernet links in order to aggregate available bandwidth.
This allows load sharing of traffic among the links in the channel as well as redundancy in the event that one or more links in the channel fail. A maximum of 8 active ports are supported in a single etherchannel. Caution you should use care when using the on mode. The physical switch ports in pagp can be configured in one of two available modes in pagp. Now normally, if i wanted to increase speeds,i would have to pay for an entirely new switch.
The industry standard name is link aggregation ieee 802. Sets the interface to respond to pagp negotiation packets, but the interface will start negotiations on its own desireable. A port channel is the logical representation of the etherchannel on the switch. Understanding etherchannel the process used to bundle ports together in an ethernet switch to achieve higher bandwidth is known as etherchannel or link aggregation. Etherchannel in cisco switch developed by cisco for grouping several switchports into one single logical channel. Sample configuration of etherchannel link aggregation control protocol lacp with esxiesx and ciscoh for lacp deployments only with 5. Cisco ccna routing and switching 200120 complete video course is a comprehensive training course that brings cisco ccna exam topics to life through the use of realworld demonstrations, animations, live instruction, and configurations, making learning these foundational networking topics easy and fun.
An etherchannel bundles individual links into a channel group to create a single logical link that provides the aggregate bandwidth of up to eight physical links. This company was acquired by cisco systems in 1994. Once youve passed the ccent, your next step toward cisco certification and a career in it is the ccna. The channel protocol lacp is not absolutely needed it knows when you add channelgroup x mode active that it is lacp. In this tutorial from my free ccnp switch course on etherchannels, youll learn. Etherchannel tutorial network switch computer standards. Implementing and troubleshooting etherchannel hack and. Configure etherchannel on cisco asa to increase bandwidth. Prepare the ccna and ccnp exams with our cisco packet tracer tutorials. An etherchannel bundles individual physical links into one logical link to increase the total bandwidth. Etherchannel some links below may open a new browser window to display the document you selected. Cisco ccna routing and switching 200120 complete video. Im here to help you as much as possible, thats why i try to answer every comment and email that i receive. Understanding layer 3 etherchannel support on the cisco isr.
Free cisco certified network associate ccna online. This is a manual configuration, and ports on both ends of the etherchannel must have the. Dont hesitate to contact me or leave a comment under my posts on this website and ill try to address and answer your questions if i. Lesson 01 introduction to cisco certified network associate ccna certification. In this way you can configure lacp etherchannel in cisco switch.
The website was founded in late 2009 with the goal of providing free cisco ccna labs that can be completed using the gns3 platform. Cisco s implementation of port aggregation is called etherchannel. Etherchannel allows us to group several practically eight physical ethernet links on a cisco switch into one logical link. Bipin is a freelance network and system engineer with expertise on cisco, juniper, microsoft, vmware, and other technologies. Pagp is a ciscoproprietary protocol that you can only run on cisco switches and on switches that are licensed vendors to support pagp. The etherchannel protocols allow ports with similar characteristics to form an etherchannel through dynamic negotiation with connected network devices. Etherchannel can be provisioned across cisco switches and routers. Ciscos implementation of port aggregation is called etherchannel. The basic process for configuring your etherchannel interfaces is as follows. A layer 3 etherchannel is similar to an interface on a router. Etherchannel is the port link aggregation technology invented by a company named kalpana.
Fast etherchannel can be used to interconnect lan switches, routers, servers, and clients via unshielded twisted pair utp wiring or singlemode and. Etherchannels can be used to enhance the bandwidth between data centre and wiring closets, you can also apply it anywhere in network where the bottlenecks can possibly occur. Etherchannel technology was invented by kalpana in the early 1990s. There are three mechanisms you can choose to configure etherchannel. Etherchannel is a port link aggregation technology developed by cisco, which provides faulttolerant highspeed links between switches, routers, and servers. What it does, it actually tricks spanning tree into thinking that youre one channel. Etherchannel supports fast, gigabit, and 10 gigabit ethernet ports. Stps great for switching loop prevention, but on occasion it leaves perfectly good bandwidth to waste. The 100105 interconnecting cisco networking devices part 1 icnd1 exam is the exam associated with the cisco certified entry network technician ccent certification and is a tangible first step in achieving an associatelevel certification candidates can prepare for this exam by taking the interconnecting cisco networking devices part 1 icnd1 course. Use the show etherchannel portchannel command to check if the portchannel is active or not. You would need dot1q trunk mode if youre tagging multiple vlans across the links which is common for esxi hosts with multiple networks on the same nics.
Upto 8 active links can be bundled to form etherchannel for fast ethernet, gigabit ethernet and 10gigabitethernet links. Etherchannel has been a part of the cisco ios for many years, so you should find that all your switches support it with proper configuration. Pagp transmits and receives messages on all interfaces in the etherchannel bundle and restricts the pagp traffic to the. Download ccnp tshoot exam topology for cisco packet tracer and practice troubleshooting scenarios on the real exam network. Etherchannel has been a part of the cisco ios for many years, so you should. Cisco offers you three ways of configuring the etherchannel three modes of operation. Etherchannel between 3725 router and 3560 switch the reason for the ehterchannel between the router and the switch is to provide more bandwidth and some sort of load balancing and redundancy. Note for releases earlier than cisco io s release 12. Configuring etherchannel utilizing pagp free ccna workbook. After you configure an etherchannel, the configuration that you apply to the port channel interface affects the etherchannel. An etherchannel is a link aggregation technology whereby two switches are connected together with multiple interfaces which are bundled together to form a single logical interface. Configure a redundant etherchannel link background three switches have just been installed. Ccie brandon carroll shows you stepbystep how to set it up on. This tutorial explains how to configure etherchannel using pagp and lacp on cisco ios switches.
And by utilizing our etherchannel configuration,i can increase bandwidth for the cost of portsinstead of the cost of hundred dollar bills. Ccna icnd2 essential training covers the second part of the exam that networking candidates need to take to earn their cisco certified network associate routing and switching ccna rs certification. Cisco switch etherchannel configuration lacp pagp in this article we will describe how to configure both lacp and pagp etherchannels on cisco switches. Etherchannel is a port link aggregation technology or portchannel architecture used primarily on cisco switches. A few years ago, cisco came up with a method to not only provide substantially higher bandwidth but with lower cost overhead. Pagp is a ciscoproprietary protocol while lacp is standard or multivendor as defined in ieee 802. Chapter 7 configuring etherchannel on a cisco switch. Etherchannel etherchannel is a port link aggregation technology used primarily on cisco networking devices. Etherchannel is a technology originally developed by cisco systems as a lan switchtoswitch technique of inverse multiplexing of multiple fast or gigabit ethernet switch ports into one logical channel. On a standard vswitch the only supported method for link aggregation 802. Manual etherchannel configuration in cisco switches using.
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