# Network Options

此選項主要是修改網路設定，執行enter進入網路設定頁

![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-Ldydeh_I-GhlZZkNTRc%2FraspiConfig-2.png?generation=1556903023550033\&alt=media)

## N1 Hostname (Set the visible name for this Pi on a network)

此選項設定主機的hostname，系統預設值為「raspberrypi」，可執行enter進行設定\
![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-LdydehbQZyr_ZuEUdkw%2FraspiConfig-2-N1.png?generation=1556903023180729\&alt=media)

執行enter後，會看到如下的注意訊息，說明hostname只能包含ASCII字母a\~z(不區分大小寫)，數字0\~9，及連字符號-，但hostname的開始及結尾不可以為連字符號-，其他的符號都不能，空白符號也是不能的，那如果在此設定後，基本上會自動把符號拿掉，例如輸入「raspi a」，重開機後會變成「raspia」，如果輸入「raspi+a」，重開機後會變成「raspia」，會自動取消不符合的符號。

![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-LdydehdGNIJ81KZFzFl%2FraspiConfig-2-N1_2.png?generation=1556903023503530\&alt=media)

執行enter，關閉注意訊息後，就會出現如下的設定畫面，請在此設定此設備的hostname後，再次執行enter

![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-LdydehfhDVg3DRADpf6%2FraspiConfig-2-N1_3.png?generation=1556903023488238\&alt=media)

修改前ssh連線指令如下

```
ssh pi@raspberrypi.local
```

修改前登入後顯示如下

```
pi@raspberrypi:~ $
```

修改後ssh連線指令如下

```
ssh pi@raspi.local
```

修改後登入後顯示如下

```
pi@raspi:~ $
```

## N2 Wi-fi (Enter SSID and passphrase)

透過N2 Wi-fi可以設定要連接的無線網路，設定好後就可以透過無線網卡上網，請在此處執行enter，如下圖![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-LdydehhVMx76GORwA-z%2FraspiConfig-2-N2.png?generation=1556903024288968\&alt=media)

出現SSID設定畫面，請輸入要連線的SSID名稱，注意，目前Raspiberry Pi 3不支援5G的網路，所

![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-LdydehjZbz31MLNXjhA%2FraspiConfig-2-N2_2.png?generation=1556903023996883\&alt=media)

![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-Ldydehlt2bBjE8uqZ8X%2FraspiConfig-2-N2_3.png?generation=1556903023847118\&alt=media)

## N3 Network interface names

網路卡名稱，可以透過此設定切換不同的顯示方式，在N3 Network interface names執行enter

![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-LdydehnnMd5SYN6ABxG%2FraspiConfig-2-N3.png?generation=1556903023901547\&alt=media)

會出現如下的提問，是否要啟動predictable network interface names？就只有yes和no，如果選yed啟用，在網卡的名稱就會以mac address做顯示，如果選no則以舊有的eth0、eth1做顯示

![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-Ldydehpx0G8UlWJtvQc%2FraspiConfig-2-N3_2.png?generation=1556903028170114\&alt=media)

如上圖是選yes，執行enter後就會出現如下的畫面，告知您是執行enabled，如果是選no，則會顯示disabled，確認後就執行enter，在離開時，如果設定有變動，會要求重新開機

![](https://1812161165-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LdydZPxjDcJnzcr9z_R%2F-LdydaRScqPPmeYs1eIz%2F-LdydehrBZ7DjrQbN0h5%2FraspiConfig-2-N3_3.png?generation=1556903028676299\&alt=media)

重新開機後就可以使用「ifconfig」指令去看目前的網路卡名稱

Predictable network interface names are enabled，顯示的網路卡名稱為「enxb827ebe458c7」

```
pi@raspberrypi:~ $ ifconfig
enxb827ebe458c7: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether b8:27:eb:e4:58:c7  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
```

Predictable network interface names are disabled，顯示的卡路卡名稱為「eth0」

```
eth0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether b8:27:eb:e4:58:c7  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
```


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