SDN (software defined networking) vlans and jumbo frames (mtu 9000)?

[jjasen]

I'm attempting to use SDN to support some of my use cases, like providing interfaces on our internal storage networks -- all of which would benefit from jumbo frames.

My SDN vlans work fine with MTU 1500, and my virtual machines can ping out or get pinged up to that limit.

When I try ICMP packets about 1500, everything comes apart.

I've read via the proxmox bugzilla that libpve-network-perl 0.9.8 may address this, which I applied yesterday throughout the cluster.

However, still no jumbo frames passing the defined SDNs.

Am I missing something?

edit to add:

If I use the raw vmbr0 interface with a vlan tag, or if I use the vmbr0v(vlan-number), large MTU works as expected.

 

[spirit]

this patch has been sent
https://bugzilla.proxmox.com/show_bug.cgi?id=5324

but not yet applied.


you can use a vlan-aware vmbr0, sdn + mtu is working fine with it currently.

 

[jjasen]

this patch has been sent
https://bugzilla.proxmox.com/show_bug.cgi?id=5324

but not yet applied.


you can use a vlan-aware vmbr0, sdn + mtu is working fine with it currently.

Ah. I saw some SDN MTU stuff in the 0.9.8 changelog, and had hope.

I'll try feeding it vlan-aware vmbr0 and see how it goes on Monday.

 

[jjasen]

Any idea when the patches may make it downstream to folks like me?

 

[jjasen]

Any updates on this?