DHCPv4 Client
Overview
See DHCPv4 client for the original description.
Requirements
This sample application negotiate IPv4 address from a DHCPv4 server running everywhere in your local network.
The 10/100 Ethernet MAC already configured in RMII/MII mode with MDIO using the
&macdevicetree label.
Building and Running
Build and flash DHCPv4 Client as follows:
west build -b magpie_f777ni -p -d build/dhcpv4_client-magpie_f777ni zephyr/samples/net/dhcpv4_client
west flash -d build/dhcpv4_client-magpie_f777ni
Once DHCPv4 client address negotiation completed with server, details are shown on the console like this:
*** Booting Zephyr OS … … …*** [00:00:00.012,000] <inf> net_dhcpv4_client_sample: Run dhcpv4 client [00:00:00.012,000] <inf> net_dhcpv4_client_sample: Start on ethernet@40028000: index=1 [00:00:03.473,000] <inf> net_dhcpv4_client_sample: DHCP Option 42: 192.168.10.10 [00:00:03.473,000] <inf> net_dhcpv4: Received: 192.168.10.197 [00:00:03.474,000] <inf> net_dhcpv4_client_sample: Address[1]: 192.168.10.197 [00:00:03.474,000] <inf> net_dhcpv4_client_sample: Subnet[1]: 255.255.255.0 [00:00:03.474,000] <inf> net_dhcpv4_client_sample: Router[1]: 192.168.10.1 [00:00:03.474,000] <inf> net_dhcpv4_client_sample: Lease time[1]: 28800 seconds
To verify the Zephyr application client is running and has received an IPv4 address by typing on Linux host:
$ ping -c3 192.168.10.197
PING 192.168.10.197 (192.168.10.197) 56(84) bytes of data.
64 bytes from 192.168.10.197: icmp_seq=1 ttl=64 time=0.333 ms
64 bytes from 192.168.10.197: icmp_seq=2 ttl=64 time=0.264 ms
64 bytes from 192.168.10.197: icmp_seq=3 ttl=64 time=0.274 ms
--- 192.168.10.197 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2043ms
rtt min/avg/max/mdev = 0.264/0.290/0.333/0.030 ms
On Zephyr, Shell command line:
uart:~$ net iface show 1 Interface eth0 (0x20020c88) (Ethernet) [1] =================================== Link addr : 02:80:E1:4F:98:16 MTU : 1500 Flags : AUTO_START,IPv4 Device : ethernet@40028000 (0x8018770) Ethernet capabilities supported: 10 Mbits 100 Mbits IPv4 unicast addresses (max 1): 192.168.10.197/255.255.255.0 DHCP preferred IPv4 multicast addresses (max 2): 224.0.0.1 IPv4 gateway : 192.168.10.1 IPv4 netmask : 255.255.255.0 DHCPv4 lease time : 28800 DHCPv4 renew time : 14400 DHCPv4 server : 192.168.10.10 DHCPv4 requested : 192.168.10.197 DHCPv4 state : bound DHCPv4 attempts : 1 uart:~$ net ping 192.168.10.1 PING 192.168.10.1 28 bytes from 192.168.10.1 to 192.168.10.197: icmp_seq=0 ttl=64 time=0 ms 28 bytes from 192.168.10.1 to 192.168.10.197: icmp_seq=1 ttl=64 time=0 ms 28 bytes from 192.168.10.1 to 192.168.10.197: icmp_seq=2 ttl=64 time=0 ms uart:~$ net arp Interface Link Address [ 0] 1 BC:EE:7B:32:E5:D0 192.168.10.1 [ 1] 1 00:80:77:84:BF:81 192.168.10.10