DL160 G5 coming up at 10Mbps/Half-duplex

[Joshua Baker-LePain]

I've got over 100 DL160 G5s all running CentOS 5.3 (i.e. RHEL 5.3) x86_64 and attached to Foundry switches. At boot time, I've noticed that random nodes are negotiating at 10Mbps/half-duplex rather than 1Gbps/full-duplex. The problem is not restricted to the same rack (or even model of switch in the rack). A reboot of the affected nodes (or even a 'service network restart') usually fixes the problem. I'm running the most recent BIOS and just upgraded the network adapter firmware, and the problem persists. Any ideas?

[u84823]

I've seen the same with ML115 G5, which uses the same NC105i embedded NIC, when running ESXi. My solution was simply to set server and switch to 1000/full (*must* set both ends!).