topic LACP & PXE Boot in ExtremeSwitching (EXOS/Switch Engine)

LACP & PXE Boot

Sanktis — Wed, 26 Feb 2025 13:51:12 GMT

Hi we have a Maas Server System

We need PXE Boot to Onboard new Server Systems with 2 Nics.

Issue:
Got a Server with 2 Nics to an Exos.
Boot the Server over PXE Onboarding
Reboot System and Provisioning Server with Ubuntu and LACP Configuration on that 2 Nics.

So the Idea was to Configure the Ports on the Exos Switch 1 & 2 with LACP and Fallback Mode.
But if i am Enabling the Sharing with LACP the PXE Boot is not Possible anymore.

Configuration done so far:
enable sharing 1 grouping 1-2 algorithm address-based L2 lacp
configure vlan VLAN_0100 add ports 1,3-4 untagged
configure sharing 1 lacp timeout short
configure sharing 1 lacp fallback enable

Is anybody out there with the same requirements?
I will ask here bevore i create a TAG.
EXOS Version 32.7.1.9

Thanks Florian

Re: LACP & PXE Boot

Gabriel_G — Fri, 28 Feb 2025 18:08:47 GMT

Hi Florian,

I'm curious if you're having more success with a shorter LACP fallback timer.
The default fallback timer is 60s, so if the PXE boot process 'completes' before the LACP fallback timer allows the port to pass traffic, PXE may not work successfully.

The command is:
conf sharing <Port> lacp fallback timeout <secnods>
<seconds> Fallback timeout in seconds (0..100, Default 60).

Re: LACP & PXE Boot

Sanktis — Tue, 04 Mar 2025 07:22:05 GMT

Hi Gabriel
Thanks for your Reply. Unfortantly i played around with that but because we have diffrent systems which are booting throught PXE i dont get it running till with that.

I asked the Ubuntu Service Owner to change from LACP to balance-alb this is switch indipendend and fulfill the requirments.
ATM im waiting on a Feedback.

Kind Regards
Florian

Re: LACP & PXE Boot

Sanktis — Tue, 08 Jul 2025 13:59:36 GMT

We changed finaly on the ubuntu site from LACP to balance-alb this works fine for that case 🙂