“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 links in one EtherChanel are attached to a single switch and if the switch is unplugged or fails, the entire EtherChannel is lost. Find all posts by thenomad. Rahul Aggarwal June 5, at 9: Incoming traffic is distributed in accordance to the switch configuration and is not controlled by the EtherChannel operation mode.

Hi, You said that “Link Aggregation is not a complete high-availability networking solution because all the aggregated links must connect to the same switch” but our network guys tell they can make config LACP both ports on differents switch. The Available Network Adapters displays all Ethernet adapters. The backup adapter provides the equivalent function, so the mode was eliminated from the SMIT menu.

This mode is the typical choice for two hosts connected back-to-back without an intervening switch. I don’t have an scenario to try so it’s difficult for my to know the best option between them.

Adapter additions, removals, or changes in an EtherChannel or Link Aggregation

Hi Murat, thanks for the feedback! Link Aggregation Link Aggregation is a network port aggregation technology that allows several Ethernet adapters to be aggregated together to form a single pseudo Ethernet adapter.


For example, ent0 and ent1 can be configured as the main EtherChannel adapters, and ent2 as the backup adapter, creating an EtherChannel called en3.

I have an issue where I created EtherChannel with – ent0 ent1 using mkvdev -lnagg ent0 ent If the primary adapter becomes unavailable, the Network Interface Backup switches to the backup adapter. In Network Interface Backup mode, only one adapter at a time is actively used for network traffic. The outgoing adapter path is selected by the algorithm using the destination system port value.

Two adapters are used to create an EtherChannel that consists of one primary adapter and one backup adapter. See the ifconfig command for information on how to detach an interface. Windows Active Network Connection Override. I searched a little bit for this and found this forum, where soemeone wants to do the same: It was running fine for few years. Page 1 of 2.

Fayez Mohammed March 12, at 9: There are for example 2 primary adapters.

Configuring an EtherChannel

To solve this problem, a backup option is available that keeps the service active when the main EtherChannel fails. Anonymous July 15, at 8: The Network guys at our place have this setting wtherchannel Auto. When you have Link agg. The adapters making up the Primary Channel connect to the same switch and adapters making up Secondary Channel connect to another.

In this case, you must configure your Ethwrchannel switch to create a channel by aggregating a series of Ethernet ports. I’m thinking 2 aggregations that fail between each other Anonymous August 10, at 6: Still understanding problem for me If all adapters in the EtherChannel fail, the backup adapter is used to send and receive all traffic. Could you please share your opinion?


View Public Profile for zxmaus. Thanks for all the hard work. Originally Posted by zxmaus. When a failure is detected, the next adapter will be used for all traffic.

Configuring an EtherChannel

So far, the only method I found to 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 receive statistics of individual network adapters in the channel, determining the active one depending on which adapter’s numbers are increasing.

The info you need is in the ‘entstat -d’ output or netstat -v. Address to ping Not typically used. You must manually configure this switch to treat the ports that belong to the EtherChannel as an aggregated link. Anonymous February 6, at 3: Aids detection for failover to backup adapter.

Ideally, ent0 and ent1 are connected to the same EtherChannel-enabled switch, and ent2 is connected to a different switch. Hi, this is written by IBM: We had these cris-crossed and it never was Aggregated. This does not mean that such configurations will not work. 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 backup adapter.

Do think that is an option?