State randomly changes from active to initializing

Hi,

Could anyone help me, please?

I have an InfiniBand network linking 32 hosts with Ubuntu 12.04 server, but some of them aren't working properly. Their states randomly changes from active to initializing and to active again.

The hosts are using mlnx_ofed_linux-3.1-1.0.3-ubuntu12.04-x86_64, but have different firmwares. The ibstat output from each host is attached.

Which logs or info's about my network I have to provide, to be more helpful?

Thanks