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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | SEE ALSO | COLOPHON |
VLAN manipulation action in tc(8) Linux VLAN manipulation action in tc(8)
vlan - vlan manipulation module
tc ... action vlan { pop | PUSH | MODIFY } [ CONTROL ]
PUSH := push [ protocol VLANPROTO ] [ priority VLANPRIO ] id VLANID
MODIFY := modify [ protocol VLANPROTO ] [ priority VLANPRIO ] id
VLANID
CONTROL := { reclassify | pipe | drop | continue | pass }
The vlan action allows to perform 802.1Q en- or decapsulation on a
packet, reflected by the operation modes POP, PUSH and MODIFY. The
POP mode is simple, as no further information is required to just
drop the outer-most VLAN encapsulation. The PUSH and MODIFY modes
require at least a VLANID and allow to optionally choose the
VLANPROTO to use.
pop Decapsulation mode, no further arguments allowed.
push Encapsulation mode. Requires at least id option.
modify Replace mode. Existing 802.1Q tag is replaced. Requires at
least id option.
id VLANID
Specify the VLAN ID to encapsulate into. VLANID is an
unsigned 16bit integer, the format is detected automatically
(e.g. prefix with '0x' for hexadecimal interpretation, etc.).
protocol VLANPROTO
Choose the VLAN protocol to use. At the time of writing, the
kernel accepts only 802.1Q or 802.1ad.
priority VLANPRIO
Choose the VLAN priority to use. Decimal number in range of
0-7.
CONTROL
How to continue after executing this action.
reclassify
Restarts classification by jumping back to the first
filter attached to this action's parent.
pipe Continue with the next action, this is the default.
drop Packet will be dropped without running further actions.
continue
Continue classification with next filter in line.
pass Return to calling qdisc for packet processing. This
ends the classification process.
The following example encapsulates incoming ICMP packets on eth0 from
10.0.0.2 into VLAN ID 123:
#tc qdisc add dev eth0 handle ffff: ingress
#tc filter add dev eth0 parent ffff: pref 11 protocol ip \
u32 match ip protocol 1 0xff flowid 1:1 \
u32 match ip src 10.0.0.2 flowid 1:1 \
action vlan push id 123
Here is an example of the pop function: Incoming VLAN packets on eth0
are decapsulated and the classification process then restarted for
the plain packet:
#tc qdisc add dev eth0 handle ffff: ingress
#tc filter add dev $ETH parent ffff: pref 1 protocol 802.1Q \
u32 match u32 0 0 flowid 1:1 \
action vlan pop reclassify
tc(8)
This page is part of the iproute2 (utilities for controlling TCP/IP
networking and traffic) project. Information about the project can
be found at
⟨http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2⟩.
If you have a bug report for this manual page, send it to
netdev@vger.kernel.org, shemminger@osdl.org. This page was obtained
from the project's upstream Git repository
⟨git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2.git⟩
on 2017-07-05. If you discover any rendering problems in this HTML
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manual page), send a mail to man-pages@man7.org
iproute2 12 Jan 2015VLAN manipulation action in tc(8)