Red Hat Bugzilla – Bug 149669
Intel Pro 1000 MT NIC doesn't work with Foundry FastIron switch
Last modified: 2011-11-03 13:17:12 EDT
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Description of problem:
I have 3 Dell PowerEdge 2850 servers. The on-board NIC (Intel Pro 1000 MT) doesn't auto-negotiate correctly with a Foundry Networks FastIron 2+ switch at gig full-duplex. The NIC works fine with 10/100 ports; however, I don't even get a link light using the gigabit-only ports (the gig ports only support gigabit full-duplex). Manually setting the NIC to gig/full-duplex (using ethtool) does not resolve the problem, nor does disabling auto-negotiation.
I suspected it was a driver problem. I loaded Windows 2000 on the same box and installed the latest Intel drivers. The same symptoms occurred at first under Windows, then I configured the driver and set 'Gigabit Master Slave Mode' to 'Force Master Mode' and the link came up.
I am not aware if the RHEL driver has a similar 'Force Master Mode' flag. I also experience this problem with RHEL4 as well as RHEL3u4.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. install RHEL3/4
2. plug NIC into Foundry FastIron 2+ switch
Actual Results: no link light, NIC does not pass traffic
Expected Results: link light & NIC to work