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. First, a brief overview of what you get from the show command. Skills covered in this course network administration it cisco. Assume physical interfaces gi00 up to gi03 will be used to form an etherchannel. Follow these steps to configure the lacp port priority. Understanding etherchannel load balancing and redundancy. After you configure an etherchannel, the configuration that you apply to the port channel interface affects the etherchannel.
Which etherchannel negotiation protocol is configured on the interface f0 f015. Moreover, its better to configure the resulting portchannel logical interface as trunk in order to allow vlans to pass between the switches. Much of the configuration on the portchannel will be applied directly to the member interfaces. Etherchannel can use two methods for load balancing cisco device connections, with the default load balancing based on the source mac address of the system sending data. Etherchannel configuration on cisco switch learn linux. The one disadvantage to xor operation is the load on the channels might not be equal because the loadbalancing policy is done on a specific. Few configuration restrictions can make a note that various interfaces cannot be merged in the ethernetchannel i. Consult this list of recommendations before configuring etherchannel. In this lesson well take a look at some common issues with etherchannels. But it doesnt explain the stepbystep process that you should use to make sure that you do it right.
Layer 2 etherchannel free ccna in this video imran explains the concepts of layer 2 etherchannel. Etherchannel technique is known as nic teaming in windows and ethernet bridging in linux. Etherchannel has some specific guidelines that must be followed in order to avoid configuration problems. Keep in mind that the configuration of all physical interfaces has to match. Hi, can somebody help me with the configuration for configuring etherchannel on the two vlan interfaces101,102 i have created on my cisco 1841 router. Etherchannel configuration pdf network switch internet standards. Use the option that provides the greatest variety in your configuration. Before running off to implement etherchannel, know what the restrictions are so you do not get halfway through and find out it will not work the way you planned. You can have up to eight primary ethernet adapters and up to eight backup ethernet adapters per etherchannel. Etherchannel is a feature used to group multiple parallel links into one single logical interface. 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. Pass cisco 300115 exam with 100% guarantee certbus.
I want to increase bandwidth on trunk between two for now switches specifically 3750 and 6500. 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 switching loops. 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. Learn how to configure a dynamic etherchannel using the ieee standard protocol. 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 configuration guide ios xe release 3s cisco. Sw1 should actively try to form an etherchannel and sw3 should only respond to requests. Link aggregation can be useful when interconnecting switches together and when interconnecting other devices to a switch, e. He introduces the pagp port aggregation protocol, lacp. There are different modes in which you can configure your interface.
Port channel interfaces also can be configured as vlan member ports. Hi, im new at configuring etherchannel, im a bit puzzled at a few things and have a few questions. Catalyst 4500 series switch sw configuration guide, release iosxe 3. Etherchannel configuration guidelines and restrictions. Do not be afraid to enable it on a pair of ports and try it. L2 l3 switches vlan configuration guide supermicro. We want all of these interfaces to be exactly alike. When an etherchannel is configured all adapters that are part of the channel share the. Configuring etherchannel utilizing lacp free ccna workbook. Etherchannel configuration pdf free download as pdf file. This is very helpful if we are running layer three down to the access layer switches, instead of at.
In part 2, i configure pagp, and etherchannel manual mode. Consolidated platform configuration guide, cisco ios release 15. Etherchannel can be provisioned across cisco switches and routers. Hi, regarding the network diagram attached, im confused about portchannels 32 and 34. Catalyst 4500 series switch sw configuration guide.
The first is by manually issuing a command on each port of the device that is part of the 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. This field displays a value of none if the etherchannel is not contained within another adapter the default. 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. The first switch sw1 will be active mode and sw2 will be in passive mode. 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. Configure the etherchannel between sw1 and sw2 to use destination mac address loadbalancing. You can configure multiple etherchannels on a single system, but each etherchannel constitutes an additional ethernet. Configuration an etherchannel must be configured using the cisco ios on switches and router, and using specific drivers when connecting a server. Chapter 2 the basics of device configuration 18 chapter 3 the basics of device interfaces 46. Configuring an etherchannel link free ccna workbook. When setting up an etherchannel connection, remember the following points.
Etherchannel is a technology that allows us to bundle multiple physical links into a single logical link. The last command that we can use to verify the status of an etherchannel, is the show etherchannel summary command and it will give information pertaining the configured etherchannels on the switch, the output of this command on ds2 is shown below. Etherchannel configuration guide ios xe release 3s cisco asr 920 series chapter title. Download vce online open vce files convert vce to pdf exam formatter vce mobile tutorial terms of service privacy policy billing policy. Manually dynamically, using an aggregation protocol to manually configure two ports to join an etherchannel. Provides information of an etherchannels parent device for example, when an etherchannel belongs to a shared ethernet adapter. The on mode is the same for the two protocols because the ethernetchannel configuration can be done statically or unconditionally. Lab configuring etherchannel topology addressing table device interface ip address subnet mask s1 vlan 99 192. Etherchannel diagnostic information gathering dummies. Layer3 etherchannel configuration best cisco ccna ccnp. Now i am going to configure ether channel and for this we need atleast two ethernet ports. Etherchannel is a technology that lets you bundle multiple physical links into a single logical link. By configuring etherchannel, we are bundling multiple physical connections between two or more cisco switches into one logically link. There are two main ways an etherchannel can be set up.
You started this assessment previously and didnt complete it. In this way, you can double, triple, even quadruple, the amount of data you send between two devices. Etherchannel is used to aggregate bandwidth between multiple layer 2 layer 3 interfaces. Etherchannel enables bundling of multiple physical ethernet links to create one logical ethernet link which provides high throughout and resilient links. In this article we will describe how to configure both lacp and pagp etherchannels on cisco switches. Etherchannel protocols to form an etherchannel, there are 2 protocols, port aggregation protocol pagp and link aggregation control protocol lacp. To diagnose etherchannel problems on a cisco network, you first must be able to collect information about your switch and its configuration. Perform these steps to configure the etherchannel feature on cisco 1900, 2900 and 3900 series isrs. Download what is etherchannel pagp and lacp modes in pdf click here. Etherchannel is a port link aggregation technology or portchannel architecture used primarily. Etherchannel configuration with example icnd2 200105. Serious traffic problems can result from mixing manual mode with lacp mode, or by connecting an. Manual etherchannel configuration in cisco switches using.
Etherchannel manual configuration there are two methods of configuring an etherchannel. Etherchannel on cisco ios catalyst switch in this tutorial we. Etherchannel offers great advantages in highbandwidth situations where you need more throughput. Copy the running configuration to startup configuration. If the active channel used by a connection is lost, the existing traffic can traverse over another active link on that etherchannel. Configure sw1s fa010, fa011 and fa012 interfaces to aggressively attempt to form a pagp etherchannel. What were looking at here is the output of our running configuration from our online switching lab and its showing us the final configuration for etherchannel. Etherchannel allows you to take ports on a cisco switch and combine them to give you a larger data pipe. How to configure and verify etherchannels examcollection.
What is etherchannel pagp and lacp modes snabay networking. Configuring etherchannel utilizing pagp free ccna workbook. If the etherchannel is contained within another adapter, this field displays the parent adapters name for example, ent6. With this, we come to the end of our chapter on the ether channel. Port aggregation protocol pagp port aggregation protocol is a cisco proprietary protocol used to form an etherchannel. Now, to finish configuration i need to specify loadbalancing method on both ends. This is a manual configuration, and ports on both ends of the etherchannel must have the same configuration. 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. What is etherchannel in cisco switches and routers. Upto 8 active links can be bundled to form etherchannel for fast ethernet, gigabit ethernet and 10gigabitethernet links. Link aggregation control protocol, also known as lacp.
You are not allowed to use any protocol for negotiation. To perform this task, you, as always, rely on the show and debug commands. Ok, i configure etherchannel between them on two ports making bandwidth up to 2 gb. To locate and download mibs for selected platforms, cisco ios releases, and feature sets, use cisco mib locator. Download what is etherchannel in cisco switches and routers in pdf click here. 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. But because it is sometimes more important for some data to be received rather than sent, cisco gives you a choice.
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