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List:       opensuse
Subject:    Re: [opensuse] configure jumbo frames
From:       Dave Feustel <dfeustel () mindspring ! com>
Date:       2009-04-23 13:04:24
Message-ID: 20090423130424.7433A86445 () mx2 ! suse ! de
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On Thu, Apr 23, 2009 at 02:21:29PM +0200, Per Jessen wrote:
> Dave Feustel wrote:
> 
> > On Thu, Apr 23, 2009 at 08:44:35AM +0200, Per Jessen wrote:
> >> Dave Feustel wrote:
> >> 
> >> > How do I configure my IG nic to use jumbo frames?
> >> > Neither ifconfig nor ip work for me.
> >> > 
> >> 
> >> Does your NIC support jumbo frames?
> >> 
> >> The usual way to configure it seems to be "ifconfig ethX mtu 9000".
> >> 
> >> 
> >> /Per
> > 
> > This command worked on Fedora 9, but not on suse.
> > f9: MSI K9N NEO motherboard with 1G nic
> > SUSE MSI K9N NEO V3 motherboard with 1G nic
> 
> The error I get (when jumbos aren't supported by the NIC) is 
> "SIOCSIFMTU invalid argument".  Any chance you have different version of
> drivers on Fedora/openSUSE?

I get two different errors on OpenBSD and Suse
'mtu X' gives invalid argument.
'mtu=X' gives invalid value.
 
> > That command also failed on OpenBSD which seems to
> > want 'mtu=X' instead of 'mtu X'. 1G Nic is Netgear 311.
> 
> And it does actually run with jumbo frames - did you test it? 

I don't know how to test if jumbo frames work. F9 took an mtu 9000
command.

Fedora:
eth0      Link encap:Ethernet  HWaddr 00:16:17:47:3F:9E  
          inet addr:192.168.6.32  Bcast:192.168.6.255  Mask:255.255.255.0
          inet6 addr: fe80::216:17ff:fe47:3f9e/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:9000  Metric:1
          RX packets:115502 errors:0 dropped:0 overruns:0 frame:0
          TX packets:96557 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:101806631 (97.0 MiB)  TX bytes:15754608 (15.0 MiB)
          Interrupt:23 Base address:0xc000 

Suse:
i 4/home/dave}ifconfig
eth0      Link encap:Ethernet  HWaddr 00:19:DB:D0:23:BC  
          inet addr:192.168.6.33  Bcast:192.168.6.255 Mask:255.255.255.0
          inet6 addr: fe80::219:dbff:fed0:23bc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:41631 errors:0 dropped:0 overruns:0 frame:0
          TX packets:39144 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:13634227 (13.0 Mb)  TX bytes:13886152 (13.2 Mb)
          Interrupt:250 Base address:0xe000 

OpenBSD:
 1/home/daf}ifconfig re0
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        lladdr 00:22:3f:db:f3:90
        media: Ethernet autoselect (1000baseT full-duplex,rxpause,txpause)
        status: active
        inet 192.168.6.1 netmask 0xffffff00 broadcast 192.168.6.255
        inet6 fe80::222:3fff:fedb:f390%re0 prefixlen 64 scopeid 0x1
 1/home/daf}
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