Set Interface Commands

This section covers those commands that are related to setting an interface:

• Set Interface IP Address

• Set Interface L2 Bridge

• Set Interface MTU

• Set Interface Promiscuous

• Set Interface State

Note

For a complete list of CLI Debug commands refer to the Debug CLI section of the Source Code Documents .

Set Interface IP Address

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:

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:

vpp# set interface ip address GigabitEthernet2/0/0 ::a:1:1:0:7/126

To delete a specific interface ip address:

vpp# set interface ip address GigabitEthernet2/0/0 172.16.2.12/24 del

To delete all interfaces addresses (IPv4 and IPv6):

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

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

Example of how to configure a Layer 2 bridge-domain with three interfaces (where 200 is the bridge-domain-id):

vpp# set interface l2 bridge GigabitEthernet0/8/0.200 200

This interface is added a BVI interface:

vpp# set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi

This interface also has a split-horizon group of 1 specified:

vpp# set interface l2 bridge GigabitEthernet0/a/0.200 200 1

Example of how to remove an interface from a Layer2 bridge-domain:

vpp# set interface l3 GigabitEthernet0/a/0.200

Declaration and Implementation

Declaration: int_l2_bridge_cli (src/vnet/l2/l2_input.c line 949)

Implementation: int_l2_bridge

Set Interface MTU

set interface mtu [packet|ip4|ip6|mpls] <value> <interface>

Set Interface Promiscuous

set interface promiscuous [on|off] <interface>.

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).

set interface state <interface> [up|down|punt|enable].

Example Usage

Example of how to configure the admin state of an interface to up:

vpp# set interface state GigabitEthernet2/0/0 up

Example of how to configure the admin state of an interface to down:

vpp# set interface state GigabitEthernet2/0/0 down