# BIND DEVICE

## Bind a USB device under a static name

1. find the kernel name of the USB device you want to bind

```bash
ls /dev/
```

2. Find information on the connected USB

```bash
udevadm info --name=/dev/ttyUSB0 --attribute-walk

# ——————————————————- 
# … 
# ATTRS{devnum}==”x” 
# ATTRS{devpath}==”y” 
# ATTRS{idProduct}==”zzzz” 
# ATTRS{idVendor}==”wwww” 
# ATTRS{ltm_capable}==”no”
# … 
# ——————————————————-
```

3. Edit or create a file related to the kernel information

```bash
cd /etc/udev/rules.d
sudo gedit 99-usb-serial.rules
```

```
SUBSYSTEM==”tty”, ATTRS{idVendor}==”wwww”, ATTRS{idProduct}==”zzzz”, SYMLINK+=”device_name”
```

4. Load a new rule and verify the change

```bash
sudo udevadm trigger
```

then check if the static name setting is done properly

```bash
ls -l /dev/device_name
```

## 多网口ip地址与MAC地址绑定


多网卡或者接了usb/lightning转网口时，需要把网卡的MAC地址和ip profile绑定

<img src="./pic/MAC.png" width="50%"/>