[ofa-general] Setting mtu on an IB port

[Sean Hefty]

>> I was hoping to set the IB mtu to 4096 instead of 2048 as shown in the
>> ibv_devinfo.  Any ideas on that?
>>
>
>Mike, The issue here is likely that one of the nodes/ports may be in datagram
>mode and the other one in connected mode.

I believe he's trying to control the IB MTU, not the IP MTU.

The IB MTU can be restricted based on the HCA capabilities or the switch
capabilities that the HCA may be connected to.  Do you know if these support a
larger MTU size?

- Sean