[opensuse] Finding largest MTU an interface supports on openSUSE 11.2
I am trying to set up jumbo frames on an openSUSE 11.2 system. I guess I do that by setting the MTU. When I set this value in YAST, I am uncertain if the value I set is really supported by the underlying device. For example, I have a "Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10)", using the r8169 driver. I set the MTU to 7200, and it seems to accept this. Is there a command to find the max MTU for any given device? I don't see that in ethtool. But it likes to use jargon, so maybe it is there and I do not recognize it. I can try different settings with ifconfig, waiting until a value fails. But there must be a better way to find the max MTU supported. -- Roger Oberholtzer OPQ Systems / Ramböll RST Ramböll Sverige AB Krukmakargatan 21 P.O. Box 17009 SE-104 62 Stockholm, Sweden Office: Int +46 10-615 60 20 Mobile: Int +46 70-815 1696 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Roger Oberholtzer wrote:
I am trying to set up jumbo frames on an openSUSE 11.2 system. I guess I do that by setting the MTU. When I set this value in YAST, I am uncertain if the value I set is really supported by the underlying device. For example, I have a "Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10)", using the r8169 driver. I set the MTU to 7200, and it seems to accept this.
Is there a command to find the max MTU for any given device? I don't see that in ethtool. But it likes to use jargon, so maybe it is there and I do not recognize it.
AFAIK, the only way is to read the datasheet. Or trial&error. -- Per Jessen, Zürich (14.7°C) -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
participants (2)
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Per Jessen
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Roger Oberholtzer