Layer 2 etherchannel configuration best cisco ccna ccnp. Figure 2 shows how to use an etherchannel as a cluster control link in a virtual switching system vss or virtual port channel vpc environment. Because ports configured in the on mode do not negotiate, there is no negotiation traffic between the ports. Ports configured in the on mode do not exchange pagp packets both the auto and desirable modes enable ports to negotiate with partner ports to form an etherchannel based on criteria such as port speed.
I need some help with ether channel configuration between my two switches. I need some help with etherchannel configuration between my two switches. An etherchannel is simply a logical bundling of 2 8 physical connections between two cisco switches. A layer 3 etherchannel is similar to an interface on a router. Catalyst 3750x and 3560x switch software configuration. Hi, i want to make etherchannel between isr4331 router with cisco 9200 series stacking switches, i have a doubt in isr4331 which type of nim cards should i used to make 4 uplinks as etherchannel connecting to cisco switches, 1 nim4 4port serial. For example, if you configure an interface w channelprotocol lacp, the cli wont let you configure channelgroup mode desirableauto pagp. Some more on etherchannels including how the loadbalancing is calculated. All ports in each etherchannel must be configured as either layer 2 or layer 3 ports. When setting up an etherchannel connection, remember the following points. Configuring an etherchannel link free ccna workbook. I am very familiar with configuring etherchannel on cisco switches. Layer3 etherchannel configuration best cisco ccna ccnp.
Layer 2 etherchannel configuration best cisco ccna ccnp and. 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. Switch ports exchange pagp packets only with partner ports configured in the auto or desirable modes. The configuration applied to the port channel interface also affects the individual interfaces. Layer 2 configuration guide, cisco ios xe amsterdam 17.
The process of creating an etherchannel bundle is very finicky. How to configure and verify etherchannels examcollection. Figure 301 typical etherchannel configuration the etherchannel provides fullduplex bandwidth up to 800 mbps fast etherchannel or 8 gbps gigabit etherchannel between your switch and another switch or host. The messages sent by pagp are always sent to the known multicast addresses 0ccccccc and 0x0104 2 protocol code. To set a cisco ios based switch to the default configuration, use the following commands. Configure etherchannel lacp between cisco router and cisco. So what are some of these parameters on our switches. In this lab, you configure port aggregation protocol pagp, a cisco etherchannel protocol, and link aggregation control protocol lacp, an ieee 802. Cisco recommends using an etherchannel for the cluster control link, so that traffic can pass on multiple links in the etherchannel while still achieving redundancy.
It is not constrained by the restriction of per module setting. Etherchannel between a cisco switch and server 2012. To change the parameters of all ports in an etherchannel, apply the configuration commands to the port channel interface, for example, spanning tree protocol stp commands or commands to configure a layer 2 etherchannel as a trunk. Remember that i have an upcoming ccna bootcamp on the weekend of august 17. The layer 3 etherchannel can be configured with an ip address. For a lacp etherchannel, you can configure up to 16 ethernet ports of the same type. In this lab, you will configure port aggregation protocol pagp, a cisco etherchannel protocol, and link aggregation control protocol lacp, an ieee 802. 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. To change the parameters of all ports in an etherchannel, apply the configuration commands to the portchannel interface. Discussion about etherchannel and how to configure etherchannel on switch. This lab uses cisco wsc296024ttl switches with the cisco ios image c2960lanbasek9mz. From configure mode, go into the interface you wish to add to the channel. Mode that forces the lan port to channel unconditionally. We can also create layer 3 etherchannel subinterfaces and assign them ip addresses.
In a previous lesson i explained how etherchannels work and how to configure them, but i didnt write about layer 3 etherchannels before. I currently have a conondrum between a cisco router and cisco switch. The channelprotocol lacp pagp interface subcommand restricts an etherchannel to lacp or pagp, it is optional, as the channelgroup interface subcommand can also set the mode for an etherchannel. Remember that you can use the interface range giga25 6 mode to configure 2 ports that a directly next to each other this is convenient if you are configuring an 8port etherchannel. Etherchannel feature configuration guidelines and restrictions. Lacp supports the automatic creation of etherchannels by exchanging lacp packets between lan ports. Cisco confidential 30 hsrp configuration hsrp configuration commands step 1.
Change layer 2 settings in port channel interface configuration mode. Pagp is a cisco proprietary protocol so you can only use it between cisco devices. Use the command channelgroup 1 mode on on every port you want to be placed into the etherchannel. Catalyst 2960 and 2960s software configuration guide.
This is the output of the show etherchannel summary on the cisco 6500. Etherchannel configuration hi, i have the following configuration regarding etherchannel. Simply configure the etherchannel manually on both ends of the bundled link even if the other device supports these protocols. Cisco asa cluster spanned etherchannel mode duconet. Lab configuring etherchannel 2017 cisco andor its affiliates.
Etherchannel manual configuration there are two methods of configuring an etherchannel. Configure pagp pagp is a cisco proprietary protocol for link aggregation. Before exploring etherchannel, you will examine dynamic trunking protocol, a cisco proprietary protocol for automatically forming trunks. Feb 07, 2021 in this lab, you will configure port aggregation protocol pagp, a cisco etherchannel protocol, and link aggregation control protocol lacp, an ieee 802. Otherwise, the etherchannel misconfig guard may place these ports into errdisabled state. Pagp is a cisco proprietary protocol that you can only run on cisco switches and on switches that are licensed vendors to support pagp. Pdf chapter 2 lab 22, configuring etherchannel carmen. Cisco switch etherchannel configuration lacp pagp in this article we will describe how to configure both lacp and pagp etherchannels on cisco switches. Each etherchannel can consist of up to eight compatibly configured ethernet ports. Catalyst 6500 series switch cisco ios software configuration guide, release 12.
The physical interfaces are bundled together into a port channel interface, as shown in the figure. Understanding etherchannel load balancing and redundancy on catalyst switches cisco pdf configuring etherchannel and link state tracking. I have a cisco 2911, and a cisco 3650x that i would like to configure link aggregation between. You cannot configure the on mode with an etherchannel protocol. Configuring a cisco ios gigabit ethernet switch for dynamic link aggregation the following example shows the cisco ios switch cli commands for configuring six ports for lacp. Cisco confidential 23 configure etherchannel configuration guidelines the following guidelines and restrictions are useful for configuring etherchannel. Lacp is an ieee standard which many vendors support. The channelprotocol lacp pagp interface subcommand restricts an etherchannel to lacp or pagp, it is optional, as the channelgroup interface subcommand can also set the mode for an. This bundling of fast ethernet, gig ethernet, or even 10 gig ethernet ports is also called aggregation. Specify the interfaces that compose the etherchannel group. The concept etherchannel has arrived from cisco as a lan switchtoswitch technique, which is port link aggregation technology dispenses faulttolerant speed links between the servers, switches, and routers. We use more of our available bandwidth, we avoid some of that 50second delay that comes with.
This document provides a sample configuration for fast etherchannel fec and ieee 802. An etherchannel is a logical bundling of two to eight parallel links running between two switches. This tutorial explains how to configure etherchannel using pagp and lacp on cisco ios switches. 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.
We can manage load balancing, redundancy on cisco switches with the help of ethernetchannel. Manually dynamically, using an aggregation protocol to manually configure two ports to join an etherchannel. Vtp, etherchannel, stp, portsecurity, and dhcp snooping lab hi all, this structured lab prepared by dante mcneil and myself covers vtp, etherchannels, stp, portsecurity and dhcp snooping and is an exercise for anyone who wants a scenario to challenge their understanding of the same. Once the etherchannel negotiation protocol is set by either one of the commands, the setting cannot be overridden by the other command issuing the channelprotocol pagp lacp interface. Vtp, etherchannel, stp, portsecurity, and dhcp snooping lab. This is what you need to know about etherchannel to pass the ccna. Protocol pagp, a cisco etherchannel protocol, and link aggregation control protocol lacp, an ieee. Lacp is the ieee standard and is the most common dynamic etherchannel protocol, whereas pagp is a cisco proprietary protocol and works only between. The catalyst l2 fixed configuration switches include the 29003500xl, 2940, 29502955, and 2970 switches. New ccna routing and switching 200125 ccna security and ccna voice best ever ccnp route300101 and 642902 and switch and also best rhcerhcsa linux notes for rhel6 and rhel 7 and also ubuntu and pfsense firewall pdf notes. What would be the proper configuration to connect a 2960x and a 3850 stack together switch. Manual etherchannel configuration in cisco switches using.
Etherchannel configuration with example icnd2 200105. E, e14, e and e14 of each of the cisco nexus are attached to gi219, gi220, gi221 and gi222 of the cisco 6500 respectively theres a network diagram attached. 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. Configuring an etherchannel is actually quite simple.
Understanding layer 3 etherchannel support on the cisco isr. How to configure an etherchannel between a switch and. Pagp and lacp are negotiation protocols that dynamically configure an etherchannel. Assign ip addresses to the pcs according to the addressing table. Configure the active router to preempt the standby router in cases where the active router comes. Layer3 etherchannel configuration best cisco ccna ccnp and. However, i have not configured lacp between a switch and a router. Sep 11, 2018 for a pagp etherchannel, you can configure up to eight ports of the same type and speed for the same group. For a pagp etherchannel, you can configure up to eight ports of the same type and speed for the same group. I tried to set it up, but i guess i didnt have the correct configuration because it did not work. Cisco confidential bandwidth up to 800 mbs fast etherchannel or 8 gbs gigabit etherchannel. In this lesson, ill show you how to configure them.
Sep 06, 2020 in this lab, you will configure port aggregation protocol pagp, a cisco etherchannel protocol, and link aggregation control protocol lacp, an ieee 802. Cisco devices running ios support single port configuration for lacp. 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. When configuring etherchannels, it is recommended to shut down the physical ports being grouped on both devices before configuring them into channel groups. The secret to using the currently blocked path is configuring an etherchannel. We can take a look at the benefits of etherchannel technology. Etherchannel between isr4331 and cisco 9200 series switch. The purpose of this document is to explain cisco integrated services router isr specific.
Link aggregation interoperability of the dell powerconnect. I have 2 cisco 2960g switches being used in an active, passive configuration. Jul 22, 2016 figure 371 typical etherchannel configuration the etherchannel provides fullduplex bandwidth up to 800 mbs fast etherchannel or 8 gbs gigabit etherchannel between your switch and another switch or host. Lacp is a link aggregation protocol that is defined by ieee 802.
Implementation tasks can be done on ethernetchannel instead of implementing or configuring on every single port. A lan port in desirable mode can form an etherchannel with another lan port in auto mode. In the on mode, a usable etherchannel exists only when a lan port group in the on mode is connected to another lan port group in the on mode. Cisco press 800 east 96th street indianapolis, indiana 46240 usa.
Oct 29, 2014 the outgoing interface is not defined by port, its based on a hash on the fields in the loadbalancing configuration. After you configure an etherchannel, the configuration that you apply to the port channel interface affects the etherchannel. What would be the proper configuration to connect a 2960x and a. Cisco ccna ccnp and linux pdf notes, cisco 200125, cisco ccna 200120, ccnp switch 300115, ccnp route, linux rhel6,rhel7, centos. Cisco ios software configuration guide, release 12.
Chapter 171 software configuration guiderelease 12. After you configure an etherchannel, the configuration that you apply to the port channel interface. Configure etherchannel lacp between cisco router and. Create the port channel interface with the channelgroup command in active mode. Do not be afraid to enable it on a pair of ports and try it. If you want to configure an etherchannel then we have three options. Configure the priority for the desired active router to be greater than 100. Etherchannel configuration ipcisco cisco networking. Up to eight ports can be active, and up to eight ports can be in standby mode.
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