Bug ID 481955: VE: Turning off LRO/GRO using tm.tcplargereceiveoffload DB variable

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4

Fixed In:
12.0.0

Opened: Sep 30, 2014
Severity: 3-Major

Symptoms

Setting tm.tcplargereceiveoffload to disable does not prevent packets greater than MSS from coming in

Impact

Cannot be used to turn off LRO/GRO if needed for performance stability/improvement

Conditions

kvm and xen non-sriov case

Workaround

Use ethtool commands to turn off LRO/GRO from the guest or host.

Fix Information

tm.tcplargereceiveoffload DB variable can be used to turn off LRO/GRO except for xen and kvm non-sriov case.

Behavior Change