In aix, there are basically three types of etherchannel adapters that can be configured. 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. Lab configuring etherchannel topology addressing table device interface ip address subnet mask s1 vlan 99 192. 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. Etherchannel configuration pdf free download as pdf file. Assume physical interfaces gi00 up to gi03 will be used to form an etherchannel. Consolidated platform configuration guide, cisco ios release 15. 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. About etherchannel configure with fru 00e1854 aix forum. Verify that interfaces fa010, fa011 and fa012 on sw1 formed a pagp etherchannel correctly. Etherchannel can be provisioned across cisco switches and routers. Etherchannel configuration demo linkedin learning, formerly. Use the show etherchannel portchannel command to check if the portchannel is active or not. Select add an etherchannel link aggregation from the list.
Most configuration settings on an etherchannels member links must be the same, and inconsistent settings will cause link members to become suspended. It also seen as one link by spanning tree algorithms. We can do layer2 things with it, for example, we gonna set this port up to be a trunk port, that would be a great fit to carry traffic for multiple vlans, like we have the trunk and, what we wanna to do specifically is, we want to setup an etherchannel within. Problem with etherchannel on a cisco 2960s vmware communities. Now i am going to configure ether channel and for this we need atleast two ethernet ports. Follow these steps to configure the lacp port priority.
Oct 12, 2015 also, better to remove existing configuration from physical interface because mismatch in configurations may not allow to form an etherchannel. Our second switch is already configured up,so were just going to do our configuration here on dswitch1. Understanding layer 3 etherchannel support on the cisco isr both layer 2 and layer 3. In 2008 free ccna workbook originally started as a sharable pdf but.
Narrator etherchannel is a way to provideincreased bandwidth and redundancyto a switching environment for not a ton of money. Etherchannel configuration on cisco switch learn linux ccna. The physical interface configuration changes affect the interface only. Understanding layer 3 etherchannel support on the cisco isr. Etherchannel is the technology which is used to combine several physical links between switches or routers into one logical connection and treat them as a single link. An etherchannel comprising access ports provides increased bandwidth and redundancy to a host device, such as a server. In this document, the terms etherchannel, fast etherchannel, gigabit etherchannel, or channel all refer to etherchannel.
An etherchannel bundles individual physical links into one logical link to increase the total bandwidth. The way etherchannel load balancing works is that the switch assigns a hash result from 07 based on the configured hash method load balancing algorithm for the type of traffic. Cisco press 201 west 103rd street indianapolis, in 46290 usa cisco router con. About etherchannel configure with fru 00e1854 aix forum forum. Etherchannel is a port link aggregation technology or portchannel architecture used primarily on cisco switches. For the channel to be formed correctly without stp loops etc. Etherchannel configuration guidelines and restrictions. Understanding etherchannel load balancing and redundancy. Chapter 12 this chapter describes how to configure etherchannels on the cisco 7600 series router layer 2 or layer 3 lan ports. I dont understand how it can be working when the ports inside po34 are trunk ports with native vlan 20 whereas the ports inside po34 are configured just with the command switchport and apparently they just have. The mode you select applies to all etherchannels that you configure on the switch. Use the option that provides the greatest variety in your configuration. All ports in the portchannel should be of same type fast ethernet or gigabit ethernet, same speed, same duplex settings. Now normally, if i wanted to increase speeds,i would have to pay for an entirely new switch.
In 2008 free ccna workbook originally started as a sharable pdf but quickly evolved into the. Lets take an example to see the benefits of this technology. Etherchannel configuration on cisco switch learn linux. You are not allowed to use any protocol for negotiation. Etherchannel technique is known as nic teaming in windows and ethernet bridging in linux. And by layer2 means that the logical port we going to create, its going to appear like, its a switch port. Ether channels can be formed with either access or trunk ports. For more information, see the etherchannel configuration guidelines section on page 3411. To verify your configuration you can use either the show etherchannel summary or show etherchannel detail command in user or privileged mode as shown below. Sep 22, 2018 the way etherchannel load balancing works is that the switch assigns a hash result from 07 based on the configured hash method load balancing algorithm for the type of traffic.
Manually dynamically, using an aggregation protocol to manually configure two ports to join an etherchannel. Ether channel has develop into a cross platform method of load balancing of servers, routers and switches. Also, better to remove existing configuration from physical interface because mismatch in configurations may not allow to form an etherchannel. Chapter 2 the basics of device configuration 18 chapter 3 the basics of device interfaces 46. 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. An etherchannel can be created from between two and eight active fast, gigabit or 10. Understanding etherchannel the process used to bundle ports together in an ethernet switch to achieve higher bandwidth is known as etherchannel or link aggregation. The document also includes how to troubleshoot etherchannel and how to use trunking with etherchannel. The logical port, with the combined capacity of the individual ports, is then used to carry layer two frames or layer three packets, depending on the configuration. Suppose your company has two switches connecting with each other via a fastethernet link 100mbps. Sw1 should actively try to form an etherchannel and sw3 should only respond to requests.
Layer 2 etherchannel configuration best cisco ccna ccnp. Configuring etherchannel utilizing pagp free ccna workbook. Multiple physical connections can be made, but many of the higher level protocols were not designed to failover completely seamlessly. Interfaces in active mode will actively try to form an etherchannel. Nov 06, 2010 manual channel configuration without using any form of negotiation. This is the output of the show etherchannel summary on the cisco 6500.
Jun 25, 2017 configuration is verified with these commands. Moreover, its better to configure the resulting portchannel logical interface as trunk in order to allow vlans to pass between the switches. Copy the running configuration to startup configuration. Etherchannel has some specific guidelines that must be followed in order to avoid configuration problems. The best command to use is show etherchannel detail. Up to 8 physical ports can be bundled together providing either up to 800 mbs fast etherchannel or 8 gbs gigabit etherchannel. Implementing and troubleshooting etherchannel hack and. How to configure and verify etherchannels ether channels are designed to provide the fault tolerant high capacity links between servers, routers and switches. Group portchannel protocol ports 32 po32su lacp gi219p gi220p gi221p. Configure the etherchannel between sw1 and sw2 to use destination mac address loadbalancing. A port channel is the logical representation of the etherchannel on the switch.
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. The first switch sw1 will be active mode and sw2 will be in passive mode. This lab will discuss and demonstrate the configuration and verification of static etherchannel links. Layer 3 etherchannel is used on layer 3 switches like cisco 3750 etc. If you are using gns3 than load the free ccna workbook gns3 topology than start devices. Resource center events promotions and free trials services. Manual channel configuration without using any form of negotiation. 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. Port configuration mismatches are going to be an easy way to inadvertently bring down the portchannel. Configuring an etherchannel link free ccna workbook.
In either the usual computertoswitch or in a switchtoswitch configuration, the cable itself or either of the ports the cable is plugged into can fail. The individual port configurations, eth00 and eth01 in this case, need to match at all times. Upto 8 active links can be bundled to form etherchannel for fast ethernet, gigabit ethernet and 10gigabitethernet links. Configure etherchannel between catalyst 45004000, 5500.
Etherchannel modes pagp, lacp and on ip with ease ip. And by utilizing our etherchannel configuration,i can increase bandwidth for the cost of portsinstead of the cost of hundred dollar bills. Jul 30, 20 furthermore, pagp andor lacp configuration must be removed from a switchs interfaces before a manual etherchannel can be formed. When an etherchannel is configured all adapters that are part of the channel share the same layer 2. Do not be afraid to enable it on a pair of ports and try it.
You can configure maximum 8 ports in single portchannel. Manually configured etherchannel ports do not exchange etherchannel protocol packets. Learn how to configure a static unconditional etherchannel to bundle multiple. It then dy namically groups similarly configured ports on a single switch in the. Etherchannel operation implementation restrictions etherchannel interface types cannot be mixed. Feb 15, 2020 etherchannel configuration guidelines and restrictions etherchannel has some specific guidelines that must be followed in order to avoid configuration problems. Layer3 etherchannel configuration best cisco ccna ccnp. Etherchannel and hsrp free download as powerpoint presentation. This gives you a lot of information but im particularly interested in seeing if lacp is configured for passive or active mode. Etherchannel some links below may open a new browser window to display the document you selected. Perform these steps to configure the etherchannel feature on cisco 1900, 2900 and 3900 series isrs. Instructor alright, so here we are in my environment. Implementing and troubleshooting etherchannel hack and tinker.
Because all that information you type in portchannel configuration mode will be automatically copied to those main physical interfaces. This 3750g is vtp server and a 2960s is vtp client and all vlan are declared 2 po2su gi1022p gi1023p gi1024p this, this is the etherchannel between my esxi v5 server if i do a sh int trunk, this trunk its ok. 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. Hi, regarding the network diagram attached, im confused about portchannels 32 and 34. Before starting the configuration of etherchannel, we should consider the following guidelines. This hash result is commonly called as result bundle hash rbh. Etherchannel is a port link aggregation technology or portchannel architecture used primarily. How to configure and verify etherchannels examcollection. Jan 19, 2018 etherchannel is a port aggregation feature that allows for the bonding together of two or more switch ports into a logical interface. Etherchannel cisco switches configuration using packet tracer version 6. Etherchannel manual configuration there are two methods of configuring an etherchannel. Layer3 etherchannel configuration best cisco ccna ccnp and.
By using pagp, the switch stack learns the identity of partners capable of supporting pagp and the capabilities of each port. In this lab, you will configure etherchannel, a form of link aggregation used in switched networks. One place to go to verify your etherchannel bundle is on the switch. Layer3 etherchannel configuration now in our last topic, we configured a layer2 etherchannel, and that might be very appropriate, if we had end to end vlans in the enterprise, another words, we got vlans in building 1, vlans in building 2 and vlans in building 3, and all the same. Understanding etherchannel load balancing and redundancy on. By configuring etherchannel, we are bundling multiple physical connections between two or more cisco switches into one logically link. Etherchannel configuration with example icnd2 200105. So they should all match in the end, but the configuration is done at the portchannel mode. 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. Furthermore, pagp andor lacp configuration must be removed from a switchs interfaces before a manual etherchannel can be formed. Making configuration changes to an etherchannel now that we have a working etherchannel we have a few things that need special attention. When setting up an etherchannel connection, remember the following points. Link aggregation can be useful when interconnecting switches together and when interconnecting other devices to a switch, e.
This is a manual configuration, and ports on both ends of the etherchannel must have the same configuration. Etherchannel is a port aggregation feature that allows for the bonding together of two or more switch ports into a logical interface. Ether channel can bound two, four and eight cisco 6500 to develop one logical link. Interfaces in passive mode will only respond to lacp requests. Introduction ether channel is technology which develop by cisco as lan switch to switch technique of inverse multiplexing of fast or gig ethernet switch port in one logical link. Interface fa0 and fa014 are both in use for this etherchannel. You will configure etherchannel using port aggregation protocol pagp and link aggregation control protocol. Etherchannel is an extremely common technology used in the real world to provide. Etherchannel configuration pdf network switch internet standards. How to configure and verify etherchannels download free vce. Etherchannel load balancing can use mac addresses, ip addresses, or layer 4 port numbers with a policy feature card 2 pfc2 and either source mode, destination mode, or both.