Use the show etherchannel portchannel command to check if the portchannel is active or not. If the remote switch port is configured with desirable then only it will form pagp etherchannel. Etherchannel and hsrp free download as powerpoint presentation. These free pdf notes is to improve the ccna basics and concepts. Download what is etherchannel in cisco switches and routers in pdf click here. Packet tracer configuring etherchannel instructor version instructor note. It is used for logical aggregation and automated aggregation of ethernet ports. I dont know why they have that separate command, maybe someone else can chime in why thats even there. The same cisco proprietary hash algorithm is also implemented in cisco catalyst 65006000 series switches that run cisco ios software. Cisco offers you three ways of configuring the etherchannel three modes of operation. Cisco ccna routing and switching scaling networks 3. Packet tracer configuring etherchannel topology objectives part 1.
By far, the last show command is the most important show command. Etherchannel between 3725 router and 3560 switch the reason for the ehterchannel between the router and the switch is to provide more bandwidth and some sort of load balancing and. Etherchannel connections to windows server and portfast cisco. Note cisco nxos does not support port aggregation protocol pagp for etherchannels. Etherchannel is a port link aggregation technology or portchannel architecture used primarily on cisco switches. The etherchannel provides fullduplex bandwidth up to 8 gbs gigabit etherchannel or 40 gbs 10gigabit etherchannel between your switch and another switch or host.
The channelgroup mode command allows you to decide if the etherchannel. Etherchannel configuration cisco pdf cisco systems network. Configuring etherchannel utilizing pagp free ccna workbook. A maximum of 8 active ports are supported in a single etherchannel. What is etherchannel in cisco switches and routers. Note that ether channel technology is general allows for multilink aggregation, redundancy and load balancing.
Lab 71 configuring routing information protocol rip lab 72 configuring rip versions 1 and 2. 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. Etherchannel configuration pdf network switch internet standards. You can form an etherchannel with up to eight compatibly configured.
The manually configured etherchannel will only form when all ports are configured in the etherchannel compatibility. After you configure an etherchannel, the configuration that you apply to the port channel interface affects the etherchannel. Cisco confidentialbcmsn 7 1 10 catalyst switches can leverage a protocol to dynamically establish and maintain the etherchannel bundle. Solved cisco network assistant etherchannels spiceworks. Cisco nexus 5000 series nxos layer 2 switching configuration guide, release 4. By configuring etherchannel, we are bundling multiple physical connections between two or more cisco switches into one logically link. In order to setup mdix on our cisco catalyst switches.
Jan 28, 2015 cisco was the first to the table with an etherchannel implementation when they created pagp. Practice switching, ip routing, wan and security labs with asa 5506x or isr routers. Jul 09, 2007 fast etherchannel allows multiple physical fast ethernet links to combine into one logical channel. Interface fa0 and fa014 are both in use for this etherchannel. Etherchannel with cisco wireless bridges i have tried it with layer 3 etherchannel and used the eigrp routing protocol to route between the different networks and it works now but i am going to try it with a bigger file. Etherchannel allows you to take up to eight network ports on your switch and treat them as a single larger link. Cisco s implementation of port aggregation is called etherchannel. It allows grouping of several physical ethernet links to create one logical. To set etherchannel to use with of the protocols you will configure it to support one of the following modes.
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. All cisco switches have the ability to support etherchannel. I can create the etherchannel between the 3825 and 3750 without subinterfaces and etherchannel. Etherchannel configuration pdf free download as pdf file. Catalyst 65006000 switches that run cisco ios system software uses a cisco proprietary hash algorithm. 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. You are not allowed to use any protocol for negotiation. This ciscoauthorized, selfpaced foundation learning tool helps you prepare for both the 200101 icnd2 and 200120 ccna exams.
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. When you configure one end of an etherchannel in either pagp or lacp mode, the system negotiates with the other end of the channel to determine which ports. Do not be afraid to enable it on a pair of ports and try it. Jan 19, 2018 to successfully configure etherchannel bonding between two cisco switches using lacp as the aggregation protocol, the following configuration commands are required. Understanding etherchannel the process used to bundle ports together in an ethernet switch to achieve higher bandwidth is known as etherchannel or link aggregation. Yes, im sticking with the term homotocol, and you cant stop me. Pagp is a cisco proprietary protocol that you can only run on cisco switches and on switches that are licensed vendors to support pagp. It delivers the higher level of foundational knowledge you need to prepare for the. Lacp is the ieee standard and is the most common dynamic etherchannel protocol, whereas pagp is a cisco proprietary protocol and works only between supported vendors and cisco devices.
Cisco switch etherchannel configuration lacp pagp in this article we will describe how to configure both lacp and pagp etherchannels on cisco switches. This algorithm is explained in the catalyst os section. 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. The same cisco proprietary hash algorithm is also implemented in cisco catalyst 65006000 series switches that run cisco ios. So show etherchannel summary, pretty important command. The show etherchannel portchannel command allows us to dive into the specifics about our portchannel. The industry standard name is link aggregation ieee 802. To locate and download mibs for selected platforms, cisco ios releases, and feature sets, use cisco. How to configure and verify etherchannels examcollection. You want to be able to read through that output inside and out, up and down, side to side without a problem. 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. Etherchannel supports fast, gigabit, and 10 gigabit ethernet ports. Ciscos implementation of port aggregation is called etherchannel.
Hence, in essence, you can only achieve perfect load balancing, even with random addresses, if. I realize that i could probably do this via command line but i wanted to create. Enough of the terminology and reasons for using the technology. A catalyst 4500 series switch supports a maximum of 64 etherchannels. Cisco press 201 west 103rd street indianapolis, in 46290 usa cisco router con. Implementing and troubleshooting etherchannel hack and tinker. Adding a port to an etherchannel configuring etherchannels. Configuring an etherchannel link free ccna workbook. Fast etherchannel can be used to interconnect lan switches, routers, servers, and clients via unshielded twisted pair utp wiring or singlemode and. Red font color or gray highlights indicate text that appears in the instructor copy only. If the ports are operating in full duplex, the maximum theoretical bandwidth supported is as follows. Mar 30, 2010 matching network parameters between ibm system p and cisco networks change load balancing hash mode ent0 linux eth0 ent1 ent3 aix ent2 aix61server2. The etherchannel will balance the traffic across links in etherchannel.
Learn network troubleshooting skills on a large range of cisco. You can download the newest questions and answers in this pdf file. Link aggregation interoperability of the dell powerconnect. Bandwidth upto 40 gbs 10gigabit etherchannel is supported with cisco. We have three modes in link aggregation control protocol. Because of ed issues, we had to remove all questions and answers out of certprepare. Sw1 should actively try to form an etherchannel and sw3 should only respond to requests. The physical switch ports in pagp can be configured in one of two available modes in pagp. Part of cisco networking allinone for dummies cheat sheet. As part of my studies for the bcmsn exam, i have been trying to configure etherchannel on a 3550 emi switch and keep recieving the following message. Sample configuration of etherchannel link aggregation control protocol lacp with esxiesx and cisco h for lacp deployments only with 5. 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. Vce player download vce online open vce files convert vce to pdf.
This chapter describes how to configure etherchannel on the layer 2. Lacp is a link aggregation protocol that is defined by ieee 802. 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. I am attempting to configure an etherchannel in cisco cna but i cannot select any of the local ports for the group. Etherchannel technology was invented by kalpana in the early 1990s. Sets the interface to respond to pagp negotiation packets, but the interface will start. Hi everyone, need to confirm if cisco switch 4500 has etherchannel that has connections going to server is this config ok switchport access vlan 20 switchport mode access no cdp enable channelgroup 4 mode on second thing to know is is there any advantage if i config spanning tree portfast on ab. I have followed the config examples from the cisco.
Link aggregation can be useful when interconnecting switches together and when interconnecting other devices to a switch, e. Etherchannel configuration cisco pdf free download as pdf file. When setting up an etherchannel connection, remember the following points. 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. It is required that these interfaces share the same speed.
Layer 2 etherchannel configuration best cisco ccna ccnp and. Etherchannel configuration with example icnd2 200105. Configure the etherchannel between sw1 and sw2 to use destination mac address loadbalancing. Manual etherchannel configuration in cisco switches using. All ports in an etherchannel must be assigned to the same vlan or they must be configured as trunk ports. Sample configuration of etherchannel link aggregation control protocol lacp with esxiesx and ciscoh for lacp deployments only with 5.
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. Oct 12, 2015 configure pagp etherchannel in cisco ios switch. Etherchannel with cisco wireless bridges cisco community. In this demonstration, we are going to establish an etherchannel bonding between switches 1 and 2, using three fast ethernet ports on both switches. Etherchannel some links below may open a new browser window to display the document you selected. Etherchannel is the subject of our next exam topics discussion. The channel protocol lacp is not absolutely needed it knows when you add channelgroup x mode active that it is lacp. Trying to create a etherchannel wtih sub interfaces to support vlan interrouting between 3825 esm module to 3750 g 1ru switch. Interconnecting cisco network devices part 2 icnd2 download. 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. On most cisco switches it is possible to create logical connections that are madeup off different physical interface. Then the industry created its vendorneutral homotocol, lacp. Lacp is a link aggregation protocol that is defined by ieee. This allows load sharing of traffic among the links in the channel as well as redundancy in the event that one or more links in the channel fail.
1447 1139 873 1072 1636 1564 1340 324 1529 416 680 205 1335 393 770 1592 822 935 1520 1577 479 89 334 807 26 601 976 1564 759 1440 936 650 130 837 692 1469 899 427 8 543 294