Link aggregation control protocol lacp is a industry standard ieee 802. Catalyst 3750x and 3560x switch software configuration. This port channel uses link aggregation and control protocol lacp or in the cisco world, could also use port aggregation protocol pagp to signal the establishment of the channel between two devices. Cisco 2900 series, and cisco 1900 series integrated services routers generation 2 software configuration guide.
Display active channels with the show neighbor command. Cisco nexus 5000 series nxos software configuration guide. Configuring a port channel interface free ccna workbook. I have a portchannelportchannel 800 and 5 subinterfaces configured under it. Cisco me 3400e ethernet access switch software configuration. Portchannel null gc pseudo portchannel po1 port index 0 load 0x00 protocol age of the port in the current state. This gives you a lot of information but im particularly interested in seeing if lacp is configured for passive or active mode. There are no vlan ids, which should correspond to the dot1q ids that are assigned on the subinterface, co. The cost is calculated based on the number of ports assigned to the portchannel. The subinterfaces are configured as l3 interfaces with dot1q. Portchannel interfaces are logical interfaces assigned to etherchannel bundles. The ios configuration to create portchannels is like the following. Etherchannel bundles individual ethernet links into a single logical link that provides bandwidth up to 1600 mbps fast etherchannel, full duplex or 16 gbps gigabit etherchannel between two cisco catalyst switches. Configure and troubleshoot cisco portchannels learn how to configure ciscoetherchannels.
Link3updown interface gigabitethernet1016, changed state to down. To change the parameters of all ports in an etherchannel, apply configuration commands to the port channel interface such commands can be. For instance, if the portchannel interface is disabled, or shut down as cisco calls it, then the channel will not work even though all four member ports are enabled. The command has the portchannel loadbalance command applied to make the modifications that we applied in the advanced tab in asdm. After you configure an etherchannel, the configuration that you apply to the port channel. In this instance, cisco nxos creates an empty channel group with the same channel number as the port channel and takes the default configuration. Interfaces in passive mode will only respond to lacp requests.
The virtual port channel configuration merely controls the aggregate port. If it is set to port channel, it will also be reflected on member 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 portchannel therefore increasing bandwidth between the switches. Specify the portchannel logical interface, and enter interface configuration mode. An etherchannel can be created from between two and eight active fast, gigabit or 10. 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.
This lab will discuss and demonstrate the configuration and verification of portchannel interfaces. Here you can see the port channel configuration on an asa 5540 and a catalyst 2960. Using this configuration ensures session stickiness and general balanced loaddistribution based on. Catalyst 4500 series switch cisco ios software configuration. The ability to configure etherchannels on asa models 5510 and above was introduced within 8. The endpoint can be a switch, server, router or any other device such as firewall or load balancers that support the link aggregation technology etherchannel. The best command to use is show etherchannel detail. The thing is to apply the command to the portchannel interface and not the individual links because if you apply it to the individual links they may drop out of the etherchannel.
For lacp, you could configure a global system priority. In this article we will describe how to configure both lacp and pagp etherchannels on cisco switches. This document provides a sample configuration for establishing etherchannel between a cisco catalyst switch running cisco ios software. In this instance, the cisco nexus v creates an empty. Wsc3750x48pfs switch does not accept port channel configuration commands for certain ports. Each etherchannel has a portchannel logical interface numbered from 1 to 24. You are using lacp for the portchannel thats the non cisco proprietary one so youre good there, and using adding that channelgroup 1 mode active will force a trunk. Etherchannel is a port link aggregation technology or portchannel architecture used primarily on cisco switches.
Me 3800x and me 3600x switches software configuration. Heres a snippet of sho ver cisco ios software, iosxe software, catalyst 4500 l3 switch software cat4500euniversalm, version 03. Table 342 shows the userconfigurable etherchannel lacp modes for the channel. Do not be afraid to enable it on a pair of ports and try it. If you make it untrusted the default confguration of a port channel and no interfaces are assigned to it, it will go away. To change the parameters of all ports in an etherchannel, apply configuration commands to the portchannel interface, for example, spanning. All catalyst switches running catos system software support. The minimum and maximum members are defined as 1 and 8. The third device can be a switch, server, or any other networking device.
Add physical interfaces to port channel group in interface configuration mode with. When you add a member port that does not support interswitch link protocol isl trunking to an etherchannel, cisco ios software automatically adds a switchport trunk encapsulation dot1q command to the portchannel interface to prevent. On the cisco switch, in our case catalyst 3750g, set. When setting up an etherchannel connection, remember the following points. When we enable the port channel mode to as desirable to the interfaces on both side and applied the port channel to physical interfaces switch will go down and if we remove on any one side switch will come up. This is tutorial to show you how to get your virtual interface up and running. I need to add a static route so that the network 10. Virtual router redundancy protocol vrrp gateway load balancing protocol glbp. Can someone please confirm, im configuring a cisco 3750 running 12. If you completely the previous three labs then you should be quite familiar with etherchannel technology by now. Use the show etherchannel portchannel command to check if the portchannel is active or not.
The vpc aka virtual port channel is a cisco technology that presents both nexus paired devices as a unique layer 2 logical node to a third device. Lacp mode that places a port into an active negotiating state, in which the port initiates negotiations with other ports by sending lacp packets. You should be ok to apply it on one end and then on the other without affecting the portchannel but if you are nervous about it, the best thing to do is to do it out. Interface fa0 and fa014 are both in use for this etherchannel. The port channels configuration is not really tricky but it is a little bit complex and it will be best if you keep the history of what you have changed to not lose overview of what and why you actually configured. Cisco switch portchannel, how to configure october 20. Increases the available bandwidth between two devices. Hi we have cisco 6500 series switch and configured port channel on both switches with 2 gig interfaces on both switches. The following is a basic example of an etherchannel on a cisco ios device. In this document, the etherchannel configuration uses pagp for autonegotiation.
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. You can configure and run either static port channels or ports channels running the link aggregation control protocol lacp. This is a bit late, but researching something similar i came across this cisco forums post. Port channeling port agreggation whos your itdaddy. I cant understand what im missing, i would appreciate it very much if. Lacp mode that places a port into an active negotiating state, in which the. A portchannel with six or more 100 mbps physical ports will have an stp cost of 5. This configuration was developed and tested with these software and hardware versions. Etherchannel port channel on cisco asa amir montazeri. The switch configuration in this document applies to any catalyst 65006000.
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. I have a 3750 switch stack with a portchannel 10 configured over 2 switchports. Configuring etherchannel between catalyst switches running. It reports the following objects in ieee8023lagmib ieee8023lagmibdot3adaggportselectedaggid. Adding vlan to live port channel solutions experts exchange. Interfaces in active mode will actively try to form an etherchannel. Note the port channel is operationally up when at least one of the member ports is up and that ports status is channeling. Sitching the portchannel to l2 or l3 doesnt seem to make a difference. The third device can be a switch, server, or any other networking device that supports link aggregation technology. Windows server 2012 lacp nic teaming on cisco catalyst. I would schedule in a time, shut down the bgp peer, form the portchannel with its layer 3 configuration obviously on both ends and then bring the bgp peer back up again. As stated in the previous labs that when you bundle. How to configure virtual ether channelport channel interfaces on your cisco asa firewall.
Cisco virtual port channel vpc is a virtualization technology, launched in 2009, which allows links that are physically connected to two different cisco nexus series devices to appear as a single port channel to a third endpoint. After you configure an etherchannel, the configuration that you apply to the port. For gigabit etherchannel, you can configure up to 8 gbps 8 ports of 1 gbps, depending on the number of. Just make sure the dell side is using lacp as well im not sure what it tries by default. No, because youll need to remove the ip address from the physical interface and then reapply it to the portchannel interface. Configure etherchannel on cisco asa to increase bandwidth.
Cisco 3750 stack with port channels how to view what are. Under lacp you could configure some options, like port priority and rate. From a spanning tree standpoint, vpc eliminates stp blocked ports and uses all available uplink bandwidth. Assign an ip address and subnet mask to the etherchannel. This portchannel interface number corresponds to the one specified with the channelgroup interface configuration command. In this instance, the port channel assu mes the layer 2 configuration of the first interface. Answers and views expressed by me on this forum are my own and not necessarily the position of aruba networks or hewlett packard enterprise. There can be similarities in the actual command used on cisco ios or nexus nxos to show a summarized list of portchannels, for instance, on ios the command is. I ran into an issue creating portchannel interface with the 10gige uplinks. With layer 2 ports, use the channelgroup interface configuration command to dynamically create the portchannel interface. Cisco 7500 router running cisco ios software release 12. Load balancing mode based on address in global configuration mode. Etherchannel between a cisco catalyst switch that runs cisco. An etherchannel provides a method of aggregating multiple ethernet links into a single logical channel within this article we will provide the steps required to create an etherchannel link on the cisco asa along with providing the main troubleshootingshow commands.
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