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Intel X540-T2 LAGG0 MTU

NIC, network controllers, compatibility questions, WOL, wake on lan
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kjbuente
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Intel X540-T2 LAGG0 MTU

Post by kjbuente »

I have two VLANs configured on my machine with LAGG0 as it's parent device. I have tried setting the MTU on the VLANs and LAGG0 though the web interface and I end up with a boot loop due to a kernel panic. I remove the MTU setting and everything boots normally. I have also tried setting the MTU via the web interface with

Code: Select all

ifconfig (interface) mtu 9000
and I get the error

Code: Select all

ifconfig: ioctl SIOCSIFMTU (set mtu): Invalid argument
From what I have read, I need to set the MTU on the parent device of the LAGG before the LAGG is created, then the MTU filters down to all child interfaces. I'm not sure how the best way of doing this in NAS4Free. Setting the MTU in the GUI requires setting an IP on the parent interfaces, doing so cause my system to boot loop again...
SuperMicro 846 Chassis + 1200W Redundant PSUs + "A" model Backplane , SuperMicro X10SRL-F Motherboard, 512GB ECC RAM, Xeon E5 1650v3, 24*8TB WD Red Pro, 4 RaidZ2 Vdevs, 2 IBM M1015 Cross Flash to IT Mode, 2 IBM 46M0997 SAS Expanders, Dual port 10Gb Intel X560. RootOnZFS.

SuperMicro 846 Chassis + 1200W Redundant PSUs + SAS3-846-EL2 Backplane , SuperMicro X10SRL-F Motherboard, 512GB ECC RAM, Xeon E5 1650v3, 24*SanDisk Lightening 800GB 12Gbps SSDs, 12 Mirror vDevs, 4 Intel Optane 32GB NVMe drives (SLOG),Dual port 40Gb Intel XL710. RootOnZFS.
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Jack Foobar
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Re: Intel X540-T2 LAGG0 MTU

Post by Jack Foobar »

Yea, in rc.conf. There seems to have been alot of issues with Intel's driver and that card dropping or not engaging Jumbo frames without running out of memory and crashing on freenas/freebsd. Hopefully that's been fixed in 10.x.

https://bugs.freenas.org/issues/4560#note-31
https://forums.freebsd.org/threads/28053/
http://www.cyberciti.biz/faq/freebsd-ju ... figration/
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