Bug #13344: Vlan loses parent interface when changing LAGG mtu to jumbo frames - pfSense - pfSense bugtracker

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Bug #13344

closed

Vlan loses parent interface when changing LAGG mtu to jumbo frames

Added by Matthew Whittaker-Williams over 3 years ago. Updated almost 2 years ago.

Status:

Duplicate

Priority:

Normal

Assignee:

Category:

LAGG Interfaces

Target version:

Start date:

Due date:

% Done:

Estimated time:

Plus Target Version:

Release Notes:

Default

Affected Version:

Affected Architecture:

Description

Hi,

Psense+ version: 22.01

When I try to add jumbo frames to lagg interface ( 9000 ) - main
When I change the main interface enabled with no ip address the vlans configured under the lagg instantly lose their parent device.

lagg1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
description: LAGG1

ifconfig lagg1.115|grep vlan
groups: vlan
vlan: 0 vlanpcp: 0 parent interface: <none>

How am I suppose to enable jumbo frames on a aggregated link without losing vlan device links?
Also how to keep it persistent from the gui without doing hacks during bootup.

Files

lagg1-mtu-9000.png (278 KB) lagg1-mtu-9000.png

Matthew Whittaker-Williams, 07/07/2022 08:47 AM

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Updated by Alhusein Zawi over 3 years ago

it appears with 22.05 too.

to workaround :

re-save the Lagg interface Interfaces>LAGGs

after resaving:
lagg0.100: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
options=3<RXCSUM,TXCSUM>

ifconfig lagg0.100|grep vlan
groups: vlan
vlan: 100 vlanpcp: 0 parent interface: lagg0

22.05-RELEASE (amd64)
built on Wed Jun 22 18:56:13 UTC 2022
FreeBSD 12.3-STABLE

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Updated by Jordan G over 2 years ago

Matthew Whittaker-Williams wrote:

When I try to add jumbo frames to lagg interface ( 9000 ) - main
When I change the main interface enabled with no ip address the vlans configured under the lagg instantly lose their parent device.

Same behavior in 22.05, saving the (parent) interface with with IPv4/6 set to none and MTU 9000 kills connectivity on any VLANs on the LAGG. Reverting config and reboot/reroot restores connectivity. Config corrected, saving/applying interfaces and resetting states did not restore connectivity to sub-interfaces.

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