Subject: Re: Problems with wm interface and vlan's
To: Chris Ross <firstname.lastname@example.org>
From: Chuck Swiger <email@example.com>
Date: 03/02/2005 04:31:18
Chris Ross wrote:
[ ... ]
> 1) When I use fxp0, the MTU of the vlan interfaces are 1500, just as is
> the mtu on fxp0. But, when I use wm0, I have to manually set the mtu to
> 1504, because if I don't, the MTU on the vlan interfaces comes up as 1496 when
> they are created. Why is this different?
The fxp NIC probably has hardware support for VLAN tagging and/or the slightly
larger MTU of 1504. The wm0 interface may lack either, so try using a smaller
MTU with it.