Operational Defect Database
BugZero found this defect 464 days ago.
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F5 | 1115601
VE on VMware with VMXNET3 fails to work with Large Receive Offload (LRO)
Last update date:
4/26/2024
Affected products:
BIG-IP
BIG-IP LTM
Affected releases:
14.1.0
14.1.0.1
14.1.0.2
14.1.0.3
14.1.0.5
14.1.0.6
14.1.2
14.1.2.1
14.1.2.2
14.1.2.3
14.1.2.4
14.1.2.5
Fixed releases:
No fixed releases provided.
Description:
Severity: 2-Critical ... Symptoms ... BIG-IP VE running on VMware may either not utilize Large Receive Offload (LRO), or may exhibit poor TCP performance for standard virtual servers using TCP profiles with Delayed ACKs enabled. ... Impact ... - TCP performance is not as expected when going through a standard virtual server when TMM receives LROed TCP segments. - Virtual servers are not using LRO, even when it is enabled. ... Conditions ... BIG-IP VE deployed in a VMWare environment, using VMXNET3 NICs ... Workaround ... Disable LRO globally: tmsh modify sys db tm.tcplargereceiveoffload value disable && tmsh save sys config ... Fix Information ... None
