I'm trying to enable vlan tagging on an SLES SP3 x64 server without success. I'm using Broadcom 82599EB NICs. All interfaces are configured for the internal firewall and services are permitted. The configs launch and do not issue errors on network restart/startup, but no traffic is tagged when it hits the switch. The switch ports are properly configured and cables are good (I've tested them with other boxes). The 8021q module loads on startup. I've tried using both the YAST wizard and manual configuration without success. My configs are as follows:

/etc/sysconfig/network/ifcfg-eth2

BOOTPROTO='static'
BROADCAST=''
ETHTOOL_OPTIONS=''
MTU=''
NAME='82599EB 10-Gigabit Network Connection'
NETMASK=''
NETWORK=''
REMOTE_IPADDR=''
STARTMODE='auto'
USERCONTROL='no'

/etc/sysconfig/ifcfg-vlan100

BOOTPROTO='static'
ETHERDEVICE='eth2'
IPADDR='10.x.x.x/24'
MTU=''
DEVICE='vlan100'
NETWORK='10.x.x.0'
REMOTE_IPADDR=''
STARTMODE='auto'
USERCONTROL='no'
VLAN_ID='100'

These configs are a result of the YAST configuration wizard currently. All help is appreciated; thanks in advance.