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xen-users
AW: [Xen-users] e100 + Xen + VLAN -> VLANs don't work?
I think your network adapter has no support for IEEE 802.1Q VLAN Tagging
You need a network adapter with IEEE 802.1Q VLAN Tagging support
Thomas
-----Ursprüngliche Nachricht-----
Von: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] Im Auftrag von Tomasz
Chmielewski
Gesendet: Freitag, 2. Februar 2007 13:22
An: Javier Guerra
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Betreff: Re: [Xen-users] e100 + Xen + VLAN -> VLANs don't work?
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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