Jumbo frames not working with bnx driver 7.10.1
Last updated on DECEMBER 14, 2017
Applies to:Solaris x64/x86 Operating System - Version 11.3 to 11.3 [Release 11.0]
Information in this document applies to any platform.
The bnx interface isn't working with jumbo frames - any jumbo packet (>1500 bytes Ethernet payload) doesn't get past the bnx interface/driver.
It is evident in packet captures, if running the bnx (Broadcom NXII GbE 7.10.1) driver, which is delivered with Solaris 18.104.22.168.0.
This results in a communication failure for any type of traffic that might send large packets - which is most everything if jumbo is enabled.
Once a standard 1500 MTU, using nonjumbo frames are implemented, everything starts working again.
What we have are:
Solaris 22.214.171.124.0 -> bnx (Broadcom NXII GbE 7.2.2) -> working fine with jumbo frames
Solaris 126.96.36.199.0 -> bnx (Broadcom NXII GbE 7.10.1) -> only works if MTU=1500 for bnx interfaces.
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