Bug ID 761356: Hyperv SR-IOV: MTU more than 1500 is not supported

Last Modified: Apr 17, 2024

Affected Product(s):
BIG-IP MA-VE(all modules)

Known Affected Versions:
15.0.0, 15.0.1,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 15.1.9,, 15.1.10,,,

Opened: Mar 15, 2019

Severity: 3-Major


Packet length observed (using tcpdump or any other tool) is 1514 bytes.


Jumbo frames do not work. Note: This is a limitation in the drivers themselves, and is not unique to BIG-IP systems. The same issue occurs if the MTU change is attempted from the Linux command line instead.


1. Hyper-V SR-IOV NICs are in use on the BIG-IP system. 2. VLAN MTU is greater than 1500 on the BIG-IP system, and MTU is greater than 1500 on client and server NICs.



Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips