[ofa-general] [Bug 450] New: IPoIB BW drop (measured with iperf) with mtu=1500 on x86 RH4UP3

[Michael S. Tsirkin]

> >Why are you playing with ifc mtu?
> 
> We needed to do some IP forwarding tests between IB and Ethernet and
> wanted to have the same MTU for the eth0 and ib0 interfaces, after
> that we reproduced that in a peer to peer configuration.

OK but PMTU discovery would do this better, won't it?
As a side note, with 1.5K MTU it's probably better to use datagram mode
anyway.

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MST