Bug ID 755580: Mellanox VFs with DPDK driver do not support jumbo frames

Last Modified: Apr 15, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP All(all modules)

Opened: Jan 15, 2019
Severity: 3-Major

Symptoms

If using a Mellanox ConnectX-3, 4, or 5 as a dataplane NIC in BIG-IP Virtual Edition (VE) with the DPDK driver, the tmm does not support a value greater than 1500 for the MTU on these cards. Attempts to use jumbo frames results in dropped packets.

Impact

Packets greater than 1500 bytes in size are dropped by the device.

Conditions

-- BIG-IP VE with an SR-IOV Virtual Function (VF) from a Mellanox ConnectX-3, 4, or 5 NIC driven by the tmm's DPDK support. -- VLAN MTU greater than 1500 bytes.

Workaround

Do not configure a VLAN MTU greater than 1500 bytes if it contains one of these interfaces.

Fix Information

None

Behavior Change