Jumbo frames in team NIC's

[ptr727]

Hi, I want to enable jumbo frames for my Hyper-V VM's and live migration NIC's.
In google I found articles stating to only needing to enable jumbo frames in the VM NIC, and other articles stating to only do it on the actual host team member NIC's.

Which is it?
Physical team member NIC's?
Virtual team NIC?
Virtual VM NIC?
Combination?

P.

 

[weust]

Virtual Machine NIC would make no sense as you're Live Migration a VM, no the Guest OS of the VM.

Here at work I use Qlogic QLE3242 adapters with four VNICs per port.
Teams are made of one VNIC per physical port (Port 1 Function 0 and Port 2 Function 1 for example).
On both VNICs I enable 9014 packet size (forgot the exact naming).

Note that I use the QLogic teaming software of the driver, not Windows Teaming.
Also, I don't use Jumbo Frames for the Live Migration team members. I have seen over 7 or 8Gbit/s while doing Live Migrations.
I do use them for the iSCSI team members. Which is even a VMSwitch too (for SQL 2012 servers) and here I do need to enable Jumbo Frames on the vEthernet created because of AllowManagement $true.

Anyway, you need to enable it on the adapters. Physical and teaming adapter.

 

[ptr727]

Thanks for the reply.
After trying various unsuccessful combinations I reverted everything back to normal.

I am using an Intel I350T4 adapters and HP 1810 v2 switches.
I am testing using mturoute (mturoute.exe - official site

The team NIC does not have a jumbo frame configuration option.
There is a hidden multiplexor NIC that does have a jumbo option, but made no difference.

The only combination I've yet to try is to break the team, then set jumbo on all team members, then recreate the team.
I'll do this in a couple weeks when I can bring the server down.

 

[weust]

A hidden multiplexor NIC? A Get-NetAdapter doesn't show it?

Anyway, please post back here. Would like to know the result.

 

[ptr727]

Yes, weird, but did not work for me:
Darryl van der Peijl |
Configuring Jumbo Frames with PowerShell in Windows Server 2012 | Working Hard In IT

 

[weust]

Odd. The second link is how I do things for my iSCSI VMSwitch.
It connects to a NetApp with Jumbo Packets enabled.

The first link is way too cumbersome imo.
Sound like "scripting because I can" instead of typing one line (two if you need to know the interface index number or name".

But again, why use Jumbo Packets for Live Migration?
Do you have a paper or something about that?

 

[ptr727]

My objective is to get jumbo frames working, it should work, regardless of how it would be used, e.g. SMB, iSCSI, etc.

 

[weust]

Alright, get your point. And yes, it should work.
But are the ports on your switches configured to accept anything above the default 1472(forgot the exact default value).

 

[legen]

Everything in your communication chain needs to support jumbo frames. So start by testing parts of your communication chain with i.e. a laptop. Use the following list of commands for sending a jumbo frames ICMP packet,

Windows
ping -f -l 8958 IP_of_another_machine

OmniOS/Solaris
ping -s IP_of_another_machine 9000 4

Linux/xenserver
ping -M do -s 8972 IP_of_another_machine

If hyper-v to laptop works continue to hyper-v -> switch -> laptop etc etc.