Hi John

Thanks for the reply made a lot or progress going forward didn’t notice the SVM was bound to e1a only after migrating to the trunk a0a - all now works against the test plan with link failures and switch failures for all four ports e1a,e1b,e1c and e1d for both nodes!

But I spotted a partial message in the config which is concerning?

I’ll get details tomorrow 

Thanks again for responding to this 

Andrew

Sent from Outlook for iOS
From: John Stoffel <john@stoffel.org>
Sent: Tuesday, October 29, 2024 8:05:31 PM
To: Andrew Hancock <andrew.hancock@cyrus-consultants.co.uk>
Cc: toasters@teaparty.net <toasters@teaparty.net>
Subject: Re: LACP configuration with NetApp FAS2820
 
>>>>> "Andrew" == Andrew Hancock <andrew.hancock@cyrus-consultants.co.uk> writes:

> Anyone here on this list familiar with Dell 4840-ON and Port Channel
> LACP configurations with two node FAS2820

Not with the Dell side, but the Netapp side.

> Usually by network is good (he says! 😊

So what's your configuration look like?

> It’s definitely not working as expected, e.g. fail a port and access
> is lost, so somethings not right, and I’m wondering if the SVM which
> is attached to current port e1a, is the issue, and it should be
> connected to the trunk a0a, or a0a-2033 – the VLAN

We need more details.  But start at the bottom.  Can you show:

   ifgrp show -instance

The key would be to see if the LACP policy agrees on both ends.