intro; successful install of Redhat via PXE netbooting; broadcom jumbo frames question

jason andrade jason at
Tue Apr 30 07:33:00 CDT 2002

On Tue, 30 Apr 2002, Arjan van de Ven wrote:

> > Anyone using jumbo frames successfully for copper GigE NICs with the
> > broadcomm chipsets? Any pointers to online docs or FAQs would be greatly
> > appreciated.
> 99% of the time the use of jumbo frames stops at the switch...
> Only few switches support jumbo frames and usually need manual
> configuring at that.

i'm using jumbo frames (well i think i am!) on intel 1000T copper
(32bit) gigE cards using Intel's 4.1.7 e1000 driver on redhat
linux 7.2 running 2.4.18-0.22.

the switch is a 3com 6 port copper gigabit one.

eth1      Link encap:Ethernet  HWaddr foo
          inet addr:192.168.X.X  Bcast:192.168.X.X  Mask:255.255.X.X
          RX packets:3902813093 errors:24 dropped:24 overruns:24 frame:0
          TX packets:3902807049 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:2072552064 (1976.5 Mb)  TX bytes:1833863044 (1748.9 Mb)
          Interrupt:22 Memory:fe020000-fe040000 

the machine is a dell 2450.

all i did was add MTU=9000 to the ifcfg-eth1 script.

i do occassionally get:

sending pkt_too_big to self

but only on the nfs client, not the server.. weird.



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