IP Linux command line

Applicable for

1. Article purpose[edit source]

This article provides the basic information needed to start using the Linux kernel tool: ip ^[1].

2. Introduction[edit source]

The following table provides a brief description of the tool, as well as its availability depending on the software packages:

: this tool is either present (ready to use or to be activated), or can be integrated and activated on the software package.

: this tool is not present and cannot be integrated, or it is present but cannot be activated on the software package.

Tool

STM32MPU Embedded Software distribution

STM32MPU Embedded Software distribution for Android™

Warning

STM32MPU Embedded Software distribution for Android™ is no more supported by ST. You can contact our ST partner, Witekio, who can help you to port and maintain it on STM32MP15 platform.

Name

3. Installing the trace and debug tool on your target board[edit source]

3.1. Using the STM32MPU Embedded Software distribution[edit source]

ip is installed by default (/sbin/ip) and is ready to be used with all STM32MPU software packages.

 which ip
/sbin/ip

It is integrated into the Weston image distribution by using the following meta-st package recipie to enable the iproute2 module: meta-st/meta-st-openstlinux/recipes-st/packagegroups/packagegroup-framework-tools.bb.

RDEPENDS_packagegroup-framework-tools-network-base = "\
   ethtool         \
   iproute2        \
   "

3.2. Using the STM32MPU Embedded Software distribution for Android™[edit source]

ip is installed by default (/system/bin/ip) and is ready to be used with all STM32MPU software packages for Android™.

 which ip
/system/bin/ip

It is integrated in Android image distribution through Android base makefile: build/make/target/product/core_minimal.mk:

# Base modules (will move elsewhere, previously user tagged)
PRODUCT_PACKAGES += \
    BackupRestoreConfirmation \
    CompanionDeviceManager \
   ...
   ims-common \
   ip \
   ip-up-vpn \
   ...

4. Getting started[edit source]

Below information is related to the Android™ distribution
Need to enable root access rights for any changes

Using ADB shell is ADB link available:

 adb root
 adb shell
 ...

Using uart console shell:

 su
 ...

To check network interfaces

 ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN group default qlen 10
    link/can 
3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:80:e1:42:43:65 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.237/22 brd 192.168.3.255 scope global dynamic eth0
       valid_lft 172057sec preferred_lft 172057sec
    inet 192.168.0.4/32 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::280:e1ff:fe42:4365/64 scope link 
       valid_lft forever preferred_lft forever
4: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000
    link/sit 0.0.0.0 brd 0.0.0.0

To assign an IP address to an interface

 ip addr add 192.168.1.53 dev eth0

To remove an IP adress

 ip addr del 192.168.1.53 dev eth0

To enable an interface

 ip link set eth0 up

To disable an interface

 ip link set eth0 down

To check a route table

 ip route show
default via 192.168.3.254 dev eth0 proto dhcp src 192.168.1.237 metric 1024 
192.168.0.0/22 dev eth0 proto kernel scope link src 192.168.1.237 
192.168.3.254 dev eth0 proto dhcp scope link src 192.168.1.237 metric 1024

To add a static route

 ip route add 192.168.2.0/16 via 192.168.1.1 dev eth0

To remove a static route

 ip route del 192.168.2.0/16

To set the default gateway

 ip route add default via 192.168.1.1

5. To go further[edit source]

Some usage examples are available for reference^[2].

6. References[edit source]

Useful external links

Document link	Document Type	Description
IP Command example	Standard	Documentation from tecmint
ifconfig vs ip	Standard	Documentation

[ipmanpage-1] 1.0 ^1.1 https://linux.die.net/man/8/ip

[2] ttps://www.linuxtechi.com/ip-command-examples-for-linux-users/

[1]

[2]