i bonded 2 NIC and specified VLAN tag of 11
cat /etc/sysconfig/network-scripts/ifcfg-bond0.11
DEVICE=bond0.11
ONBOOT=yes
VLAN=yes
NM_CONTROLLED=no
STP=no
HOTPLUG=no
also
ifconfig bond0.11 192.168.211.6 netmask 255.255.255.0
then
tcpdump -i bond0.11 -n -e
does not show any VLAN tags
even if there is any issue with physical interface or switch why dont i see tagged traffic in tcpdump when it enters interface.
Best Answer
That is correct behaviour: the interface
bond0.11
is a VLAN-aware interface, so the only traffic that you should see on it is traffic for the VLAN of which it is a member (11), after those frames have been selected and the VLAN tags removed.If you dump
bond0
you should see all the traffic that hits that physical interface, with tags intact.