Etherchannel technologies and the various means available to implement them. Etherchannel overview etherchannel is a cisco technology that enables the aggregation or bundling of switchports into one logical link. Matching network parameters between ibm system p and cisco networks configuring link aggregation ieee 802. Cisco etherchannel computer skills flashcards quizlet. Verify that interfaces fa010, fa011 and fa012 on sw1 formed a lacp etherchannel correctly. Sample configuration of etherchannel lacp with esxi and cisco. The messages sent by pagp are always sent to the known multicast addresses 0ccccccc and 0x0104 2 protocol code. Etherchannel is a port link aggregation technology or portchannel architecture used primarily on cisco switches. Under the support section, click download software for this product.
Essentially, the active end of the lacp group sends out special frames advertising the ability and desire to form an etherchannel. Switchrouter ports can form an etherchannel when they are in different pagp modes as per below criteria a port in the desirable mode can form an etherchannel with another port that is in the desirable or auto mode. You can use etherchannel guard to detect an etherchannel misconfiguration between the switch and a connected device. Standardsbased negotiation protocol, known as ieee 802. For example, a bundle of four switchports into one etherchannel would provide four times the bandwidth coming to. To do this, it uses the cisco proprietary port aggregation protocol pagp with the channel mode desirable command or the ieee 802. Span the etherchannel across several switches in a virtual stack configuration. The etherchannel protocols allow ports with similar characteristics to form an etherchannel through dynamic negotiation with connected network devices. You can configure an etherchannel in one of these modes. Dec 22, 20 etherchannel cisco switches configuration using packet tracer version 6. Etherchannel now has also has an industry standard, lacp. Lacp is the ieee standard and is the most common dynamic ether channel protocol, whereas pagp is a cisco proprietary protocol and works only between supported vendors and cisco devices.
So in the end game is get 2gbps instead of 1gbps between switches while using ciscos proprietary protocol pagb. Lacp works in a similar way to pagp, only its multivendor or standard channeling protocol. Etherchannel is the subject of our next exam topics discussion. Catalyst 2960x switch layer 2 configuration guide, cisco ios release 15.
Esxesxi running on a blade system do not require ip hash load balancing if an etherchannel exists between the blade chassis and upstream switch. Lacp port oper port port port flags priority dev id age key number state fa01 sa 32768 x. Thats usually true for newer switches but some old switches dont support using both source and destination macs. Etherchannel bonding portchannel network redundancy. Jan 22, 2016 cisco uses the term, etherchannel, to encompass both the pagpbased and the lacp based link aggregation methods. I dont know why they have that separate command, maybe someone else can chime in why thats even there. Its possible, and quite common, that both ends are set to. In this tutorial i want to show you how to configure an etherchannel between your cisco catalyst switch and a synology nas device. Configuring etherchannel utilizing pagp free ccna workbook. You can also configure lacp protocol in cisco switches for etherchannel. Instructor alright, so here we are in my environment.
It is important to remember that both of these protocols pagb and lacp are link aggregation protocols only, their job is to make sure that. It uses the multicast address of 0ccccccc for communication. Etherchannel can be configured on many different switch platforms such as the 65006000, 55005000, 45004000. To verify the etherchannel lacp configuration you can use either the show etherchannel summary or show etherchannel detail command in user or privileged mode as shown below. 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. He explains how to configure and troubleshoot etherchannel. Implementing and troubleshooting etherchannel hack and tinker. Etherchannel can use 3 links, and etherchannel doesnt fill a link and move to the next. A misconfiguration can occur if the switch interfaces are configured in an etherchannel, but the interfaces on the other device are not. Free network scan cisco meraki cloud networking products webex meetings.
Cisco was the first to the table with an etherchannel implementation when they created pagp. Etherchannel configuration on cisco switch learn linux ccna. Bundling multiple switchport ethernet links into one logical channel increases bandwidth as well creating redundancy and fault tolerance. This lab will discuss and demonstrate the configuration and verification of pagp etherchannel. Cisco uses the term, etherchannel, to encompass both the pagpbased and the lacpbased link aggregation methods. In this way you can configure pagp in cisco switches. Sep 09, 20 for additional information relating to configuring of etherchannel link aggregation with esxesxi and cisco hp switches, check out vmware knowledge base article sample configuration of. Port aggregation protocol pagp, link aggregation control protocol lacp, or on. Our second switch is already configured up,so were just going to do our configuration here on dswitch1. Which brings us to the link aggregation control protocol lacp. Etherchannel cisco networking, vpn security, routing. Bipin is a freelance network and system engineer with expertise on cisco, juniper, microsoft, vmware, and other technologies.
Etherchannel uses a ciscoproprietary hashing algorithm to achieve this link bonding. 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. An etherchannel is a link aggregation technology whereby two switches are connected. For additional information relating to configuring of etherchannellink aggregation with esxesxi and cisco hp switches, check out vmware knowledge base article sample configuration of. Protocol, lacp link aggregation control protocol and static etherchannel. Pagp etherchannel configuration, page 223 ieee 802. This is only required if an etherchannel exists between the blade and the internal chassis switch, or if the blade is operating in a network passthrough mode with an etherchannel to the upstream switch.
To download your version of cisco configuration professional, go to this url. Link aggregation, lacp, and etherchannel vmware communities. One server ibm aix with 2 nics that have etherchannel set with mode 8023ad. Learn how to configure a dynamic etherchannel using the ieee standard. For example, you can stack original generation 3750s, stackwise, with later generation 3750s ex models stackwiseplus, but both wont stack with 2960s, flexstack, or later 2960 flexstackplus series models, although. Layer 2 etherchannel free ccna in this video imran explains the concepts.
Lacp cisco networking, vpn security, routing, catalyst. Etherchannels manually or you can use the port aggregation control protocol pagp or, with release cisco ios. D down p in portchannel ent1 aix i standalone s suspended ent2 h hotstandby lacp only fastethernet 010 r layer3 s layer2 u. If this is the case manually creating an etherchannel is redundant and will lock the port group into specific manually configured ports rather than lacp s dynamic assignment of ports. Cisco switch etherchannel configuration lacp pagp in this article we will describe how to configure both lacp and pagp etherchannels on cisco switches. Sample configuration of etherchannel link aggregation control protocol lacp with esxiesx and ciscoh for lacp deployments only with 5. Configuring cisco lacp etherchannel derpy networking.
Configuring etherchannel utilizing lacp free ccna workbook. If this is the case manually creating an etherchannel is redundant and will lock the port group into specific manually configured ports rather than lacps dynamic assignment of ports. Cisco nexus 5000 series nxos layer 2 switching configuration guide, release 4. Cisco configuration professional ccp download ccna security.
A misconfiguration can occur if the switch interfaces are configured in an etherchannel. Oct 12, 20 so in the end game is get 2gbps instead of 1gbps between switches while using ciscos proprietary protocol pagb. It is not constrained by the restriction of per module setting. How to configure and verify etherchannels download free vce. Pagp cisco proprietary enables the catalyst switches to learn the capabilities of each interface assigned to an etherchannel group and activate interfaces of similar configuration to form a portchannel.
Catalyst 4500 series switch sw configuration guide. S device is requesting slow lacpdus f device is requesting fast lacpdus a device is in active mode p device is in passive mode channel group 1 neighbors partners information. Cisco configuration professional for catalyst ccpcatalyst. Etherchannel configuration guidelines and restrictions. When configured in this manner, a switch in a stack could fail taking two links with it, but the second switch in the stack would continue to operate. Etherchannel using lacp if you want to configure an etherchannel using a dynamic exchange of packets that is compliant with an industry standard method, the ios offers you two mode options. Below are the configurations of both the cisco switch 6500 in this case and peer vswitch in esx to support link aggregation control protocol 802. Lacp is a link aggregation protocol that is defined by ieee 802. I know that you can load balance layer 2 etherchannel by source and destination mac address. Lacp configuration examples part 6 michael mcnamara. Yes, im sticking with the term homotocol, and you cant stop me. Autopassive will tell that end to passively wait for the other end to start the etherchannel negotiation process, while desirableactive will actively try to initiate the etherchannel link establishment modes for pagp and lacp, respectively. Jan 06, 2017 hello friends to day i will to give you how to configurate etherchannel in protocol lacp link configuration. Configuring layer three etherchannel posted on may 7, 2018 may 5, 2018 by ryan 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.
It is important to remember that both of these protocols pagb and lacp are link aggregation protocols only, their job is to make sure that etherchannel is setup correctly by negotiating. Pagp is a ciscoproprietary protocol and lacp is defined in ieee 802. Pagp is a cisco proprietary protocol that you can only run on cisco switches and on switches that are licensed vendors to support pagp. Nov 06, 2010 etherchannel using lacp if you want to configure an etherchannel using a dynamic exchange of packets that is compliant with an industry standard method, the ios offers you two mode options. Mar 30, 2010 matching network parameters between ibm system p and cisco networks configuring link aggregation ieee 802. Catalyst 3750x and 3560x switch software configuration. Stacking is very proprietary and may differ between different devices.
The synology nas and the cisco switch both support lacp link aggregation control protocol. May 24, 2016 configuring cisco lacp etherchannel derpy networking. Enter your email below to download our free cisco commands cheat sheets for. Etherchannel configuration examples and technotes cisco. May 07, 2018 configuring layer three etherchannel posted on may 7, 2018 may 5, 2018 by ryan 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. Where to download the cisco configuration professional software. Cisco devices running ios support single port configuration for lacp.
Oct 12, 2015 as you can see above, po1 is trunking with 802. Note that ether channel technology is general allows for multilink aggregation, redundancy and load balancing. Increase network bandwidth using ciscos etherchannel. Then the industry created its vendorneutral homotocol, lacp.
I have two 2960 switches with switch a gigabit port connected switch b gigabit port. 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 link free ccna workbook. Catalyst 4500 series switch cisco ios software configuration. Pagp is a cisco proprietary protocol while lacp is standard or multivendor as defined in ieee 802. Etherchannel cisco switches configuration using packet tracer version 6.