The website was founded in late 2009 with the goal of providing free cisco ccna labs that can be completed using the gns3 platform. Perform these steps to configure the etherchannel feature on cisco 1900, 2900 and 3900 series isrs. To see if etherchannel is workingto see as one logical link 1. Oct 24, 2006 what i think is having etherchannel between the router and switch is not that recommended.
Etherchannel lacp between cisco 3750x stack and dell powerconnect 5448 new to this environment, not sure why they setup the network they way they did in the past, but i have replaced our switches dell powerconnect 5448 and and unmanaged linksys 24 port yeah i know with cisco 3750x stack. Configuring an etherchannel link free ccna workbook. You can also connect your devices in this order if you want. Jan 04, 2012 basic understanding of etherchannel posted on january 4, 2012 january 2, 2012 by ryan 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. My question is is it possible to configure po1 as trunk which in turn set the components ports in etherchannel as trunk. Dont be afraid to use etherchannel on your cisco network. Figure 1 shows a network using cisco etherchannel connections. I had an instance where 2 ports on a switch were configured with via trunk ports properly however the opposing switch was only had one port switch as a trunk, the 2nd as a regular access port. When setting up an etherchannel connection, remember the following points. Preventing stp loops in etherchannels configurations. Etherchannel allows you to take up to eight network ports on your switch and treat them as a single larger link. In a conventional network where stp blocks one link to avoid switching loops, etherchannel forces stp to see both paths or bundled as one logical link while avoiding. In this article we will describe how to configure both lacp and pagp etherchannels on cisco switches. Etherchannel supports fast, gigabit, and 10 gigabit ethernet ports.
An etherchannel bundles individual ethernet links into a single logical link that provides the aggregate bandwidth of up to eight physical links. Etherchannel allows up to eight redundant links to be bundled together into one logical link. The etherchannel provides fullduplex bandwidth up to 8 gbs gigabit etherchannel or 40 gbs 10gigabit etherchannel between your switch and another switch or host. Manage ios configuration files configure and verify a ppp connection between cisco routers, and frame relay on cisco. 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. This company was acquired by cisco systems in 1994. Iphash this is on a 6500 series switch with 4 cardsblades. Bipin is a freelance network and system engineer with expertise on cisco, juniper, microsoft, vmware, and other technologies. Supose if you configure etherchannel on switch the bandwidth becomes 200mbps but when on the router you are connected with t3 link. Configure static mac addresses on the etherchannel. This chapter describes how to configure etherchannels on layer 2 and layer 3 ports on the catalyst 3750x or 3560x switch. Also from the vmware virtual networking concepts doc p8.
Chapter 7 configuring etherchannel on a cisco switch. Ethernetchannel is a oneone relationship that connects only two devices. Fast etherchannel and fast ethernet links will be used throughout these examples. Etherchannel is fully support and preferred spreading links across cards, right. Oct 17, 2016 an etherchannel consists of individual fast ethernet or gigabit ethernet links bundled into a single logical link as shown in figure 11. 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. 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. 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. In this way you can configure lacp etherchannel in cisco switch. Sw1 should actively try to form an etherchannel and sw3 should only respond to requests. Cisco switch etherchannel configuration lacp pagp in this article we will describe how to configure both lacp and pagp etherchannels on cisco switches.
Ciscos implementation of port aggregation is called etherchannel. Configure the etherchannel between sw1 and sw2 to use destination mac address loadbalancing. If the ports are operating in full duplex, the maximum theoretical bandwidth supported is as follows. Part of cisco networking allinone for dummies cheat sheet.
Jul 30, 20 etherchannel is the cisco term for the technology that enables the bonding of up to eight physical ethernet links into a single logical link. Catalyst 2960 and 2960s software configuration guide. Link aggregation, lacp, and etherchannel vmware communities. Etherchannel negotiation an etherchannel can be established using one of three mechanisms. Etherchannel technology was invented in the early 1990s. The concept manual etherchannel configuration is arrived from cisco as a lan switchtoswitch technique, which is port link aggregation technology dispenses faulttolerant speed links between the servers, switches, and routers. How to configure etherchannel link aggregation control. Do not be afraid to enable it on a pair of ports and try it. 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. If the remote switch port is configured with desirable then only it will form pagp etherchannel. In this lab, you will configure port aggregation protocol pagp, a cisco etherchannel protocol, and link aggregation control protocol lacp, an ieee 802. Etherchannel interfaces in suspend mode cisco community. Etherchannel is the port link aggregation technology invented by a company named kalpana.
Hi cpqarray, thanks for the explanation about the static and dynamic aspects of 802. Once youve passed the ccent, your next step toward cisco certification and a career in it is the ccna. Does the order matter for changing load balancing algorithm in vmware first or doing cisco work first. Etherchannel lacp between cisco 3750x stack and dell powerconnect 5448 new to this environment, not sure why they setup the network they way they did in the past, but i have replaced our switches dell powerconnect 5448 and and unmanaged linksys 24 port yeah i. Ether channels are designed to provide the fault tolerant high capacity links between servers, routers and switches. Sep 11, 2018 this chapter describes how to configure etherchannels on layer 2 and layer 3 ports on the catalyst 3750x or 3560x switch. Identify and correct port channel protocol issues step 1. An etherchannel consists of individual fast ethernet or gigabit ethernet links bundled into a single logical link as shown in figure 11. Aug 19, 20 etherchannel technology was invented in the early 1990s. Cisco etherchannel topologies the following diagrams show some common applications of cisco etherchannel technology and how they solve the bandwidth requirements of todays networks.
After you configure an etherchannel, the configuration that you apply to the port channel interface affects the etherchannel. The point is that they got these interfaces on a trial and upload these were in sleep mode produces the following log. Below are the configurations of both the cisco switch 6500 in this case and peer vswitch in esx to support removed lacp 802. Capital, the cisco systems logo, cisco unity, enterprisesolver, etherchannel, etherfast, etherswitch, fast step, follow me browsing, formshare, gigadrive, homelink, internet quotient, ios, iphone, iptv, iq expertise, the iq. Correct any switch ports that are not assigned to the correct etherchannel port. Jul 29, 2018 configuring etherchannel on a cisco switch. Apr, 2020 the etherchannel provides fullduplex bandwidth up to 8 gbs gigabit etherchannel or 40 gbs 10gigabit etherchannel between your switch and another switch or host. In the world of etherchannel technology there are two types of dynamic channelgroup protocols, port aggregation protocol pagp which is a cisco proprietary protocol and link aggregation control protocol lacp which is the ieee standard. Etherchannel technology was invented by kalpana in the early 1990s. You can form an etherchannel with up to eight compatibly configured.
Bandwidth upto 40 gbs 10gigabit etherchannel is supported with cisco ios release 15. Etherchannel provides faulttolerant highspeed links between switches, routers, and servers. Basic understanding of etherchannel posted on january 4, 2012 january 2, 2012 by ryan 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. Oct 12, 2015 as you can see above, po1 is trunking with 802. May 04, 2008 hi cpqarray, thanks for the explanation about the static and dynamic aspects of 802. Etherchannel is a port link aggregation technology or portchannel architecture used primarily on cisco switches. Lacp belongs to the ieee standard, technically explains as 802.
You are not allowed to use any protocol for negotiation. Part 2 dives into the actual details of the protocols and how to configure them on your devices. Cisco s implementation of port aggregation is called etherchannel. The physical switch ports in pagp can be configured in one of two available modes in pagp. Layer 2 etherchannel when youre designing your network one of the factors you always consider is resiliency. What i think is having etherchannel between the router and switch is not that recommended. A maximum of 8 active ports are supported in a single etherchannel. Pagp is a cisco proprietary protocol and lacp is defined in ieee 802. The etherchannel protocols allow ports with similar characteristics to form an etherchannel through dynamic negotiation with connected network devices. The channel protocol lacp is not absolutely needed it knows when you add channelgroup x mode active that it is lacp. On by default sh etherchannel sh etherchannel 1 detail.
Link aggregation can be useful when interconnecting switches together and when interconnecting other devices to a switch, e. Part 1 defines what etherchannel is and cases for using it in your networks from a nontechnical perspective. By configuring etherchannel, we are bundling multiple physical connections between two or more cisco switches into one logically link. The problem is that with this configuration we do not get any lacp packages and the etherchannel does not. Etherchannel allows us to group several practically eight physical ethernet links on a cisco switch into one logical link. 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. Hello i configured an etherchannel two interfaces gi037 and gi039 in a ciscowsc2960g48tcl, which is connected to an hp blade, where they spend 2vlan 16 and 17. Configuring etherchannel utilizing lacp free ccna workbook. Manual etherchannel configuration in cisco switches using. There are two more things i would like to cover in this cisco fundamentals series that relates to switches. Cisco 3900 series, cisco 2900 series, and cisco 1900 series integrated services routers generation 2 software configuration guide chapter configuring etherchannel restrictions and guidelines for etherchannel feature configuring etherchannel. In 2008 free ccna workbook originally started as a sharable pdf but quickly evolved into the largest ccna training lab website on the net.
You can use it to increase the bandwidth between the wiring closets and the data center, and you can deploy it anywhere in the. Software configuration guide, cisco ios release 15. Within this article we will provide the steps required to create an etherchannel link on the cisco asa along with providing the main troubleshootingshow commands. What is the best practice when configuring etherchannel on cisco switches to prevent a stp loopbroadcast storm when etherchannel is misconfigured. Let say we have a etherchannel named portchannel p01. Link status only our network team configured the switches with etherchannel and active lacp. Pagp is a ciscoproprietary protocol and lacp is defined in ieee 802. Etherchannel is the cisco term for the technology that enables the bonding of up to eight physical ethernet links into a single logical link. Understanding etherchannel the process used to bundle ports together in an ethernet switch to achieve higher bandwidth is known as etherchannel or link aggregation. Oct 12, 2015 configure pagp etherchannel in cisco ios switch.
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