“Dear Experts, I want to make etherchannel with 4 nic port in aix lpars. ent8 and ent9 from expansion box ent12 and ent13 from server pci adapter Now how to. On AIX with “smitty etherchannel”, in the same menu, depending how the fields are filled out, 2 distinctly separate functioning devices can be created. This can. For example, ent0 and ent1 can be aggregated into an EtherChannel adapter called ent3. And interface en3 would then be configured with an.

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If all adapters in the EtherChannel fail, the backup adapter is used to send and receive all traffic. Anonymous February 6, at 3: To solve this problem, a backup option is available that keeps the service active when the main EtherChannel fails. Hello, I need your help with one of problems which occurs, regarding etherchannel: So what I want to do is remove the one adapter port from the EtherChannel ent0 or ent1 then add it back to EtherChannel as a ethefchannel adapter.

Anonymous December 30, at 9: The Available Network Adapters displays all Ethernet adapters.

I have an issue where I created EtherChannel with – ent0 ent1 using mkvdev -lnagg ent0 ent The link poller will be started automatically. We Unix Admins appreciate it: I learnt something new today: I was wondering if there was a difference between the two modes “Standard” and “ad” when it comes to the load balancing algorithm used?

Thank you for your help. In this case, you must configure your Ethernet switch to create a channel by aggregating a series of Ethernet ports.

AIX for System Administrators

You can configure multiple EtherChannels per system. But since I have no control over the network switches, I do not see if a switch had problems and my etherchannel failed over to the backup interface or not and, to my surprise, this happens more often than one might think. When either ent0 or ent1 recover, they are again etherchannell for all traffic. Change the Enable Link Polling value to yes and press Enter. You must manually configure this switch to treat the ports that belong to the EtherChannel as an aggregated link.


Configuring an EtherChannel

efherchannel I was wondering if there is a command that tells me straight out, which interface in the etherchannel is actually active and which is acting as a backup adapter at any given time. Multiple connections between two peers likely hash over different adapters. The Network guys at our place have this setting as Auto. Could you help me etherchanmel a script showing which network connections are currently active?

Anonymous August 10, at 6: Originally Posted by dukessd. If you select an Ethernet adapter that is already being used, you will get an error message and will need to detach this interface before you can use it. On AIX with “smitty etherchannel”, in the same menu, depending how the fields are filled out, 2 distinctly separate functioning devices can be created. Durham-EMS June 21, at 6: As per my understanding if one of the interfaces of etherchannel goes down the other one should be keep the interface up and available!

I have 2 4 port cards in my P7.

I have a server with multiple network interfaces. Anonymous January 20, at 4: Thanks for your consideration Jim T. Anonymous November 8, at I just got done with making Link Aggregation work across our environment. If the primary adapter becomes unavailable, the Network Interface Backup switches to the backup adapter.

The Link Aggregation status is a diagnostic value and does not affect the AIX side of the configuration. I suggest also to read this, where are some tips how to increase bandwidth: Walangkopok June 15, at 6: All Linux Man Pages.

In this case, the entstat -d command will always report the aggregation is in the Negotiating state. I don’t have an scenario to try so it’s difficult for my to know the best option between them. So, a 2x10Gb LACP channel, for 1 connection will utilize only 1 adapter at a time, and there is no guarantee that the next connection will be dispatched to the other adapter.


How do I calculate total number of active and non active hosts? EtherChannel is a trademark registered by Cisco Systems and is generally called multi-port trunking or link aggregation. The interface is defined on the EtherChannel. So far, the only method Ethercannel found etherchannnel determine which physical interface is actively handling the network traffic passing thru the etherchannel’ed IP address is, running the command entstat -d en8 in few second intervals while watching the individual interface while watching the transmit and ethetchannel statistics of individual network adapters dtherchannel the channel, determining the active one depending on which adapter’s numbers are increasing.


To debug any aggregation problems, it is best to verify the switch’s configuration. The steps to enable the use of IEEE Incoming traffic is distributed in accordance to the switch configuration and is not controlled by the EtherChannel operation mode.

The feature will be enabled automatically if you set the Enable Jumbo Frames attribute to yes. How to find the active network inteface on etherchannel. At first, congratulations for your blog.

Windows Active Network Connection Override. View Public Profile for homeyjoe. If LACP is enabled, is it more efficient? If you select an Ethernet adapter that is already being used has an interface definedyou will get an error message.