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-.. include:: ../_include/need_improvement.txt
-
-.. _qinq-interface:
-
-QinQ (802.1ad)
---------------
-
-IEEE 802.1ad was an Ethernet networking standard informally known as QinQ as
-an amendment to IEEE standard :ref:`vlan-interface`. 802.1ad was incorporated
-into the base 802.1q standard in 2011. The technique is also known as provider
-bridging, Stacked VLANs, or simply QinQ or Q-in-Q. "Q-in-Q" can for supported
-devices apply to C-tag stacking on C-tag (Ethernet Type = 0x8100).
-
-The original 802.1q specification allows a single Virtual Local Area Network
-(VLAN) header to be inserted into an Ethernet frame. QinQ allows multiple
-VLAN tags to be inserted into a single frame, an essential capability for
-implementing Metro Ethernet network topologies. Just as QinQ extends 802.1Q,
-QinQ itself is extended by other Metro Ethernet protocols.
-
-In a multiple VLAN header context, out of convenience the term "VLAN tag" or
-just "tag" for short is often used in place of "802.1Q VLAN header". QinQ
-allows multiple VLAN tags in an Ethernet frame; together these tags constitute
-a tag stack. When used in the context of an Ethernet frame, a QinQ frame is a
-frame that has 2 VLAN 802.1Q headers (double-tagged).
-
-In VyOS the terms **vif-s** and **vif-c** stand for the ethertype tags that
-are used:
-
-The inner tag is the tag which is closest to the payload portion of the frame.
-It is officially called C-TAG (customer tag, with ethertype 0x8100). The outer
-tag is the one closer/closest to the Ethernet header, its name is S-TAG
-(service tag with ethertype 0x88a8).
-
-Configuration commands:
-
-.. code-block:: none
-
- interfaces
- ethernet <eth[0-999]>
- address <ipv4>
- address <ipv6>
- description <txt>
- disable
- ip
- <usual IP options>
- ipv6
- <usual IPv6 options>
- vif-s <[0-4096]>
- address <ipv4>
- address <ipv6>
- description <txt>
- disable
- ip
- <usual IP options>
- ipv6
- <usual IPv6 options>
- vif-c <[0-4096]>
- address <ipv4>
- address <ipv6>
- description <txt>
- disable
- ip
- <usual IP options>
- ipv6
- <usual IPv6 options>
-
-
-Example:
-
-.. code-block:: none
-
- set interfaces ethernet eth0 vif-s 333
- set interfaces ethernet eth0 vif-s 333 address 192.0.2.10/32
- set interfaces ethernet eth0 vif-s 333 vif-c 777
- set interfaces ethernet eth0 vif-s 333 vif-c 777 address 10.10.10.10/24
-
-.. _802.1ad: https://en.wikipedia.org/wiki/IEEE_802.1ad \ No newline at end of file