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.. _basic_network-interfaces:
##################
Network Interfaces
##################
Configured interfaces on a VyOS system can be displayed using the
``show interfaces`` command.
.. code-block:: none
vyos@vyos:~$ show interfaces
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface IP Address S/L Description
--------- ---------- --- -----------
eth0 172.16.51.129/24 u/u OUTSIDE
eth1 192.168.0.1/24 u/u INSIDE
lo 127.0.0.1/8 u/u
::1/128
A specific interface can be shown using the ``show interfaces <type> <name>``
command.
.. code-block:: none
vyos@vyos:~$ show interfaces ethernet eth0
eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:53:29:44:3b:0f brd ff:ff:ff:ff:ff:ff
inet 172.16.51.129/24 brd 172.16.51.255 scope global eth0
inet6 fe80::20c:29ff:fe44:3b0f/64 scope link
valid_lft forever preferred_lft forever
Description: OUTSIDE
RX: bytes packets errors dropped overrun mcast
274397 3064 0 0 0 0
TX: bytes packets errors dropped carrier collisions
257276 1890 0 0 0 0
Different network interfaces provide type-specific configuration. Ethernet
interfaces, for example, allow the configuration of speed and duplex.
Many services, such as network routing, firewall, and traffic policy also
maintain interface-specific configuration. These will be covered in their
respective sections.
.. toctree::
:maxdepth: 2
ethernet
pppoe
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