We had a problem where the switch ports had been properly configured with
spanning-tree edge mode for the first 32 ports, but when we added new nodes, we
didn't notice that ports 33-48 on the switch had been left to the default.
Edge mode comes up quickly, but the default took too long to begin forwarding
on the port. This might not be your problem, but we spent weeks trying
different firmware before someone suggested we look at the switch configuration.
-- ddj
On Oct 28, 2013, at 1:35 PM, Roland Santos wrote:
> I'm getting a dhcp timeout issue with xnba/genesis. On discovery, a node will
> boot from the network and get the xnba image. It then times out getting
> network information via dhcp from within xnba. I'm running xCAT version
> 2.8.2, if it helps.
>
> On the xcat management server side, I see the initial sequence of DHCP
> requests coming from the node - DHCPDISCOVER, DHCPOFFER, DHCPREQUEST, then
> DHCPACK. After the node downloads the xnba image and loads it, it then tries
> to do another dhcp request, where the request times out. On the xcat side, I
> see just a DHCPDISCOVER and a DHCPOFFER, but no further.
>
> Any help would be appreciated.
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Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from
the latest Intel processors and coprocessors. See abstracts and register >
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