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762 CHAPTER 56: DHCP DEBUGGING COMMANDS
Examples # The DHCP client obtains IP address from the DHCP server via a DHCP relay
agent. Enable all types of debugging for the DHCP client.
<Sysname> debugging dhcp client all
<Sysname> terminal debugging
<Sysname> system
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] ip address dhcp-alloc
[Sysname-Vlan-interface2]
*0.105343 Sysname DHCPC/7/DHCP_Client:
Vlan-interface2:
Enabling DHCP to CPU succeeded!
// The interface obtained an IP address through DHCP successfully. The DHCP
message will be sent to the CPU for processing.
*0.105359 Sysname DHCPC/7/DHCP_Client:
Vlan-interface2: Move to INIT state.
*0.105359 Sysname DHCPC/7/DHCP_Client:
Vlan-interface2: FSM state transfer(HALT-->INIT) successfully.
// The state of the DHCP client is changed from HALT to INIT.
*0.105359 Sysname DHCPC/7/DHCP_Client:
Vlan-interface2: Send DHCPDISCOVER in 5 seconds.
*0.110343 Sysname DHCPC/7/DHCP_Client:
Vlan-interface2: Send a Dhcp packet...
Head : op(1); htype(ETHERNET); hlen(6); xid(0x43c130ff);
ciaddr(0.0.0.0); yiaddr(0.0.0.0); chaddr(00e0-fc14-1601);
Options :
63 82 53 63 35 01 01 0C 06 63 6C 69 65 6E 74 37
04 01 03 06 0F 39 02 04 80 3C 10 00 00 00 00 20
B8 C4 B1 E4 B5 B1 C7 B0 C2 B7 BE 3D 20 00 30 30
65 30 2E 66 63 31 34 2E 31 36 30 31 2D 56 6C 61
6E 2D 69 6E 74 65 72 66 61 63 65 32 32 FF
Warning: Deleting the interface
information of specified interface failed!
Failed to delete the user information on the specified
interface
Copying socket failed when send
release packet!
Failed to copy the socket when sending the release
packet
timer expired, but FSM state(state) is
wrong!
The timer expires, but the current state of the DHCP
client is wrong.
Skip parsing the current PXE server TLV
in option 43 due to invalid server type.
Skip parsing the current PXE server address list in
option 43 due to invalid PXE server type.
Skip parsing the current PXE server TLV
in option 43 due to length error.
Skip parsing the current PXE server address list in
option 43 due to invalid length of the PXE server
address list.
Skip parsing the current PXE server TLV
in option 43 due to invalid server
number.
Skip parsing the current PXE server address list in
option 43 due to invalid PXE server number.
Skip parsing the current PXE server TLV
in option 43 due to unknown error.
Skip parsing the current PXE server address list in
option 43 due to unknown error.
Table 146 Description on the fields of the debugging dhcp client error command
Field Description