TR111 and TR069 function development note (2)

最新推荐文章于 2024-10-19 11:03:32 发布

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最新推荐文章于 2024-10-19 11:03:32 发布 · 1.4k 阅读

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#DHCP #busybox #TR069 #TR111 #Linux

use DHCP in Linux system

DHCP is the Dynamic Host Configuration Protocol,which allows a networked machine to obtain its IP address and other informationautomatically from a DHCP server.

There are two methods through which a Linux systemcan obtain an IP address using DHCP:
1. Kernel level configuration.
2. User level configuration.

Kernel level auto-configuration:

To use kernel level auto configurtion select belowoptions in the Linux kernel configuration.

-> Networking support (NET [=y])
-> Networking options
-> TCP/IP networking (INET [=y])
[*] IP: kernel level autoconfiguration
[*] IP: DHCP support

Advantage:
In case of your root file system in NFS and wanted to have a IP dynamicaly configirued though DHCP, kernel level DHCP will come to rescue you. Using kernel level DHCP you will have have a valid IP address by the time the Linuxkernel have completed the booting and can immediately mount an NFS root filesystem.

Disadvantage:
1. Can only configure basic network parameters, which do not include items suchas DNS servers.

User level auto-configuration

I will use DHCP client applet that comes Busyboxnamed udhcpc

As per Busybox: