Part 2 dives into the actual details of the protocols and how to configure them on your devices. Ccnp etherchannel trunk configuration your network. This gives you a lot of information but im particularly interested in seeing if lacp is configured for passive or active mode. Basically, most errors were from mismatched groups and some port assignment issues. Nov 26, 2017 etherchannel is a feature used to group multiple parallel links into one single logical interface. Configuration and troubleshooting etherchannel and trunking 802.
Use the option that provides the greatest variety in your configuration. First of all, you cannot convert an active portchannel from layer 2 to layer 3 or vice versa, so if you have plans to do so, make sure it is during an outage window and that you have access to. Download one of nch softwares many free software programs in the audio, video, business, graphics, computer utility and dictation space for windows or mac. Jun 25, 20 etherchannel some links below may open a new browser window to display the document you selected. There are two issues with using only a single physical port for the trunk connection. Interfaces in active mode will actively try to form an etherchannel. For a user having connectivity issues, look around her system. Pagp behaves the same, but its two modes are refered to as desirable and auto. Find answers to etherchannel problems in packet tracer from the expert community at experts exchange. Aug 19, 20 to configure an etherchannel using lacp negotiation, each side must be set to either active or passive. Part 1 defines what etherchannel is and cases for using it in your networks from a nontechnical perspective. Implementing and troubleshooting etherchannel hack and. Cisco small formfactor pluggable sfp transceiver modules maintenance and troubleshooting pdf 345 kb 23sep2014. When i am finished with this conversion, what happens to those acls.
Here are some reminders about etherchannel operation and interaction. Understanding etherchannel load balancing and redundancy on. Etherchannel is a technology that lets you bundle multiple physical links into a single logical link. System software conversion from catos to cisco ios for catalyst 65006000 switches. Very rudimentary and easy, though troubleshooting usually isnt so easy.
The best command to use is show etherchannel detail. Trying to configure an etherchannel to use channelgroup 12 mode on channel protocol mismatch for interface gi4015 in group12. Configuration changes applied to the portchannel interface apply to all the physical ports assigned to. Implementing etherchannel in a switched network cisco press. As traffic passes through the etherchannel, the algorithm will convert the source ip. On layer 3 switches, you can convert switched ports to routed ports. Ether channel is a method that is certainly utilised if you have numerous connections to the identical device. How to configure and verify etherchannels examcollection. Cisco devices running ios support single port configuration for lacp. Sep 26, 2016 this packet tracer required for troubleshooting skills, and such a skillset shall be delivered.
Stp etherchannel fundamentals illustrated, on mode basic. Configuring etherchannel utilizing lacp free ccna workbook. Lab configuring etherchannel topology addressing table device interface ip address subnet mask s1 vlan 99 192. In this case c is the best choice because other answers are surely incorrect. Troubleshooting cisco catalyst switches to nic compatibility issues pdf 183 kb 19sep2014. For an overview of all of them in use on a switch, use the show etherchannel summary command. Sfp transceiver modules maintenance and troubleshooting pdf 345 kb 23sep2014. Now with etherchannel, we have a totallydifferent story. Interfaces in passive mode will only respond to lacp requests. Do not be afraid to enable it on a pair of ports and try it. By changing loadbalance to another method the problem can be solved. A configuration that is applied to the port channel interface affects all physical. 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.
Speaking of which, here is a very basic etherchannel on mode configuration. How to troubleshoot ether channels and spanning tree. The two links in the etherchannel can be represented in one binary bit. You get a very good gono go indication if all the ports are working correctly. Instead of just about every hyperlink functionality on their own, etherchannel teams the particular plugins with each other to operate jointly unit. Etherchannel operation implementation restrictions etherchannel interface types cannot be mixed. Here are some etherchannel troubleshooting commands that you may want to use when setting up a new etherchannel configuration. Lacp assigns roles to interconnected switches, so that the master switch is allowed to make decisions on which ports are participating in the etherchannel at any. There are some exceptions to this with configuring etherchannel negotiation modes, however those will be covered in depth in the next post, i will focus on the etherchannel mode as on mode in this post. In reader or acrobat, choose file save as and give the pdf file a new name. As traffic passes through the etherchannel, the algorithm will convert the.
The first two methods in the following list relate to the goal of the network, whereas the third is an overall deployment method. In this lab, you will configure etherchannel, a form of link aggregation used in switched networks. This is great for stp redundancy because stp will only need to reconverge if all links within the. Users manual of planet 24port gigabit layer 3 stackable managed. This is the type of etherchannel that this lab will concentrate on however the other two types of etherchannel technologies are link aggregation control protocol lacp and port aggregation protocol pagp. Passive interfaces merely respond to lacp requests. Nevertheless, lacp, has the following major differences compared to pagp. The ccnp training manual i have doesnt talk about how the etherchannel becomes its own port that may not be configured by default in the same way on the other switch. Etherchannel on mode does not send or receive pagp or lacp packets. Execute the conversion command which will reboot the switches. Java project tutorial make login and register form step by step using netbeans and mysql database duration. Cisco etherchannel with media converter problem cisco.
Configuration guide of layer3 managed switch planet technology. Below are the commands used to debug and fix the errors present in the topology. We currently have a few hundred entries on each acl for each interface on the asa. If i name the subinterface to match the names of the previously configured interfaces, will the acls apply or no. Configuring etherchannels, page 117 verifying portchannel configuration, page 1112 information about etherchannels an etherchannel bundles up to eight individual interfaces into a group to provide increased bandwidth and redundancy. Etherchannelsome links below may open a new browser window to display the document you selected. Sep 26, 2016 troubleshooting etherchannel etherchannel cisco configure cisco switch cisco aggregation switch. So in this scenario right here, were actuallylosing bandwidth because we get only fourout of one actual port from one switch. If the problems are wireless, look for sources of interference that. Everytime i bundle several trunks between 2 2950s, everything works fine, then when i try to add another port after hooking up another cable. Up to 8 physical ports can be bundled together providing either up to 800 mbs fast etherchannel or 8 gbs gigabit etherchannel.
Is there any method to adding an additional trunk link to an existingworking etherchannel bundle. Cisco catalyst 6500 series switches troubleshooting. Therefore, for the channel to form, both ends should read more. Adding an additional port to working etherchannel bundle cisco. Etherchannel problems in packet tracer solutions experts. While troubleshooting a switch, you executed the show interface portchannel. Do not overlook the physical layer when you troubleshoot. You will configure etherchannel using port aggregation protocol pagp and link aggregation control protocol. Lab troubleshooting etherchannel troubleshoot and correct the configuration errors and document your work. Understanding etherchannel the process used to bundle ports together in an ethernet switch to achieve higher bandwidth is known as etherchannel or link aggregation. Nch software download free software programs online. After you configure an etherchannel, any configuration that you apply to the portchannel interface affects the etherchannel. The mode you select applies to all etherchannels that you configure on the switch.
Etherchannel some links below may open a new browser window to display the document you selected. As you can see above we have a basic etherchannel configuration but i used the switch. Cisco networking relies on three main design methods when dealing with network design or network layout. Such commands can be stp commands or commands to configure a. Port channeling also load balances traffic across these physical interfaces. Verifying and troubleshooting etherchannel troubleshooting etherchannel all interfaces within etherchannel must have the same. Configuring an etherchannel link free ccna workbook. Implementing and troubleshooting etherchannel hack and tinker. If you encountering errors with an etherchannel, just bear in mind that the whole concept is based on consistent configurations on both ends of the channel. The loadbalancing algorithm will create an index that associates link0 with a binary bit of 0, and link1 with a bit of 1. Link aggregation can be useful when interconnecting switches together and when interconnecting other devices to a switch, e. 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.
1283 83 607 199 411 787 582 210 1287 222 1238 905 111 525 1515 616 1305 567 1253 599 1568 1080 1290 1076 228 469 946 895 1330 1382 801 1229 1403 417 642 105 874 1120 1001 1258 574 795 387