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

[Tomasz Chmielewski <mangoo@xxxxxxxx>]

Javier Guerra wrote:
> On Friday 02 February 2007, Tomasz Chmielewski wrote:
> > Any clues on why VLANs don't work anymore with Intel Ethernet Pro 100
> > card when I start the "network-bridge" script?
> for VLANs it's very convenient to use an MTU of 1504 on the ethx device (and 
> 1500 on the vlanxx devices).  but most 100mbit drivers don't allow any MTU of 
> more than 1500 (even if the cards themselves usually allow at least 1600).  
> all Gb drivers i know allow for MTUs up to 9000
> but i don't know if your scripts try to setup the MTU to 1504... might be 
> something else
Yes, these 100 Mbit cards don't support MTU higher than 1500 (I have 
this issue with Intel/e100 and Realtek/8139too cards; with 1 Gbit cards 
everything works flawlessly).
So I tried to setup VLANs (eth0.xxx) MTU to 1496, then to 1450, and it 
made no difference - still doesn't work.

--
Tomasz Chmielewski
http://wpkg.org

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