I've got a Redhat FC3 box running the 2.6.10-1.741 kernel w/ the stock e100 driver. I run the following on the box: ifconfig eth0 0.0.0.0 up vconfig add eth0 2 vconfig add eth0 3 ifconfig eth0.2 10.2.3.122 netmask 255.255.255.0 ifconfig eth0.3 10.2.5.122 netmask 255.255.255.0 then on the switch (extreme networks black diamond): config vlan office1 add port 3:35 tagged config vlan office2 add port 3:35 tagged When I try to ping either address niether work. Not sure what I'm missing here.