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======================
Set Interface Commands
======================
This section covers those commands that are related to setting an
interface:
- `Set Interface IP Address <#set-interface-ip-address>`__
- `Set Interface L2 Bridge <#set-interface-l2-bridge>`__
- `Set Interface MTU <#set-interface-mtu>`__
- `Set Interface Promiscuous <#set-interface-promiscuous>`__
- `Set Interface State <#set-interface-state>`__
.. note::
For a complete list of CLI Debug commands refer to the Debug CLI
section of the `Source Code
Documents <https://docs.fd.io/vpp/18.07/clicmd.html>`__ .
Set Interface IP Address
========================
.. code:: console
set interface ip address [del] <*interface*> <*ip-addr*>/<*mask*> | [all]
Add an IP Address to an interface or remove and IP Address from an
interface. The IP Address can be an IPv4 or an IPv6 address. Interfaces
may have multiple IPv4 and IPv6 addresses. There is no concept of
primary vs. secondary interface addresses; they're just addresses.
To display the addresses associated with a given interface, use the
command **show interface address** <*interface*>.
.. note::
The debug CLI does not enforce classful mask-width / addressing
constraints.
Example Usage
-------------
An example of how to add an IPv4 address to an interface:
.. code:: console
vpp# set interface ip address GigabitEthernet2/0/0 172.16.2.12/24
An example of how to add an IPv6 address to an interface:
.. code:: console
vpp# set interface ip address GigabitEthernet2/0/0 ::a:1:1:0:7/126
To delete a specific interface ip address:
.. code:: console
vpp# set interface ip address GigabitEthernet2/0/0 172.16.2.12/24 del
To delete all interfaces addresses (IPv4 and IPv6):
.. code:: console
vpp# set interface ip address GigabitEthernet2/0/0 del all
Declaration and Implementation
------------------------------
**Declaration:** set_interface_ip_address_command
(src/vnet/ip/ip46_cli.c line 216)
**Implementation:** add_del_ip_address
Set Interface L2 Bridge
=======================
.. code:: console
set interface l2 bridge <*interface*> <*bridge-domain-id*> [bvi|uu-fwd]
[shg]
Use this command put an interface into Layer 2 bridge domain. If a
bridge-domain with the provided bridge-domain-id does not exist, it will
be created. Interfaces in a bridge-domain forward packets to other
interfaces in the same bridge-domain based on destination mac address.
To remove an interface from a the Layer 2 bridge domain, put the
interface in a different mode, for example Layer 3 mode.
Optionally, an interface can be added to a Layer 2 bridge-domain as a
Bridged Virtual Interface (bvi). Only one interface in a Layer 2
bridge-domain can be a bvi.
Optionally, a split-horizon group can also be specified. This defaults
to 0 if not specified.
.. _example-usage-1:
Example Usage
-------------
Example of how to configure a Layer 2 bridge-domain with three
interfaces (where 200 is the bridge-domain-id):
.. code:: console
vpp# set interface l2 bridge GigabitEthernet0/8/0.200 200
This interface is added a BVI interface:
.. code:: console
vpp# set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi
This interface also has a split-horizon group of 1 specified:
.. code:: console
vpp# set interface l2 bridge GigabitEthernet0/a/0.200 200 1
Example of how to remove an interface from a Layer2 bridge-domain:
.. code:: console
vpp# set interface l3 GigabitEthernet0/a/0.200
.. _declaration-and-implementation-1:
Declaration and Implementation
------------------------------
**Declaration:** int_l2_bridge_cli (src/vnet/l2/l2_input.c line 949)
**Implementation:** int_l2_bridge
Set Interface MTU
=================
.. code:: shell
set interface mtu [packet|ip4|ip6|mpls] <value> <interface>
Set Interface Promiscuous
=========================
.. code:: shell
set interface promiscuous [on|off] <interface>.
.. _setintstate:
Set Interface State
===================
This command is used to change the admin state (up/down) of an
interface.
If an interface is down, the optional *punt* flag can also be set. The
*punt* flag implies the interface is disabled for forwarding but punt
all traffic to slow-path. Use the *enable* flag to clear *punt* flag
(interface is still down).
.. code:: shell
set interface state <interface> [up|down|punt|enable].
.. _example-usage-2:
Example Usage
-------------
Example of how to configure the admin state of an interface to **up**:
.. code:: console
vpp# set interface state GigabitEthernet2/0/0 up
Example of how to configure the admin state of an interface to **down**:
.. code:: console
vpp# set interface state GigabitEthernet2/0/0 down
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