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Re: [Xen-users] e100 + Xen + VLAN -> VLANs don't work?

To: Tomasz Chmielewski <mangoo@xxxxxxxx>
Subject: Re: [Xen-users] e100 + Xen + VLAN -> VLANs don't work?
From: Daniele Palumbo <daniele@xxxxxxxxxxxx>
Date: Fri, 2 Feb 2007 14:02:13 +0100
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On Friday 02 February 2007 13:15, Tomasz Chmielewski wrote:
> > set network script to false, and create manually the bridge.
> Hmm, how do I do it?

move mac from eth0 to veth0,
set eth0 mac FF:FE:FF:FF:FF:FF (if i remeber correctly, check for peth0 mac)
ifconfig eth0 up
brctl addbr xenbr0
[brctl stp off, sethello 0, setfd 0, man brctl]
brctl addif xenbr0 eth0
brctl addif xenbr0 veth0 
ifconfig veth0 up
vconfig add veth0 100
vconfig add veth0 200
ifconfig veth0.100 up
ifconfig veth0.200 up
[return to brctl, use your imagination]

> e100 and 8139too have something MTU-related - setting MTU higher than
> 1500 is impossible:
> # ifconfig eth0 mtu 1501
> SIOCSIFMTU: Invalid argument

this can be normal, check if the driver support jumbo frame.

> With e1000 card, I can set a higher MTU without problems.

for sure, e1000 support jumbo frame.

> However, lowering MTU for eth0/VLANs doesn't make any difference.

that is not the right way.

uh, you can check also for "tx checksumming" (list are full of this).


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