Today I ran into a weird scenario where a Linux system's NIC would set itself to 100Mbit half duplex regardless whether the device and NIC was manually configured to operated at full duplex. After trolling through Cisco's website
http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00800a7af0.shtml
I found out that the problem usually relies on the NIC. Despite both the switch and NIC have been manually set to 100 Full duplex, there is often times when the NIC still runs auto-negotiation in the background. To resolve this problem, I had to manually set the NIC to turn off auto negotiation. Once that was done. The problem went away.
Tuesday, November 3, 2009
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1 comment:
Yeah, I had the same problem few weeks ago and I resolved it in the same way using mii-tool :)
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