December 1, 200718 yr Hi, I built an unRaid server using the P5B-VM DO board. When I try to set jumbo frames using ifconfig eth0 mtu 9000 up, I get the following syslog entry: e1000: eth0: e1000_change_mtu: Jumbo Frames not supported. Is this really the case that the onboard ethernet doesn't support jumbo frames or am I doing something wrong? Thanks, Roland
December 1, 200718 yr Is this really the case that the onboard ethernet doesn't support jumbo frames? Yes, that is correct. The P5B-VM DO onboard LAN supports only standard-size frames.
December 3, 200718 yr when using the p5b-vm do as a windows machine, the drivers let me choose jumbo frames for the onboard nic for up to 7.5k but 9k was not on the list.
December 3, 200718 yr According to Asus (http://www.asus.com/products.aspx?l1=3&l2=11&l3=571&l4=0&model=1849&modelmenu=2), the P5B-VM DO uses the "Intel® 82566DM PCIe Gigabit LAN controller". The latest drivers for this controller are available from http://downloadcenter.intel.com/Filter_Results.aspx?strOSs=All&strTypes=All&ProductID=2775&OSFullName=All%20Operating%20Systems〈=eng. At least the latest release notes for Linux, XP, and Vista at the time of this writing specifically state that the controller does not support jumbo frames.
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