Am 24.03.2014 14:18, schrieb Chris Bagnall:
> However, the new tenant found that performance was erratic - certain
> websites loaded instantly, but others wouldn't load at all. This
> normally screams classic MTU problems, in my experience, but I normally
> see these on weird WAN connections, not on the LAN.
> 
> Does anyone know if there are/were 'problems' with 1.2 and VLAN MTUs on
> ALIX platforms (ethernet driver 'vr'), and whether an update to 1.3
> might fix it? This is old hardware with only 128MB RAM, so jumping to
> 2.x is optimistic.
> 
> The site in question is a couple of hundred miles away from me, so 'try
> it and see' isn't really an option in this case. :-)

While I do have to admint that I don't have experience with the
particular ethernet driver you mention, I know that there are several
Unix Operating Systems where not all ethernet drivers are capable of
dealing with the added bytes that a VLAN tag brings with it.

IIRC, VLAN needs four bytes, so instead of upgrading to 1.3 you could
first try to set the MTU to 1496 instead of the usual 1500.

-Stefan
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