Administrator Guide

Jan 7 01:38:41: %SYSTEM:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_EVT:
Interface Fo 2/0 :Transitioned to state START
Jan 7 01:38:41: %SYSTEM:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_EVT:
Interface Fo 2/0 :DHCP DISABLE CMD Received in state BOUND
Jan 7 01:38:07: %SYSTEM:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_EVT:
Interface Fo 2/0 :DHCP ENABLE CMD Received in state START
Message Sent
BOOTREPLY 0
DHCPOFFER 10
DHCPACK 16
DHCPNAK 0
debug ip dhcp client packets
Activate the debugging and display of log messages for DHCP packets sent and received on DHCP client interfaces.
C9000 Series
Syntax
debug ip dhcp client packets [interface type slot/port]
Parameters
interface
typeslot/port
Enter the keyword interface with the interface type and slot/port information to
display DHCP log messages for a specified interface. The valid interface types are:
• For a 10-Gigabit Ethernet interface, enter the keyword tengigabitethernet.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE.
Defaults none
Command Modes EXEC Privilege
Command History
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced on the C-Series and S-Series.
Example
Dell# debug ip dhcp client packets
Dell(conf)#do show debugging
Dhcp Client :
DhcpClient Packet debugging is on for fortyGigE 2/0
Dell(conf-if-fo-2/0)#ip address dhcp
Dell(conf-if-fo-2/0)#no ip address dhcp
Dell(conf-if-fo-2/0)#do show logging
Syslog logging: enabled
Console logging: level debugging
Monitor logging: level debugging
Buffer logging: level debugging, 5 Messages Logged, Size (40960 bytes)
Trap logging: level informational
Logging to 10.10.10.4
Logging to 10.1.2.4
Logging to 172.31.1.4
Logging to 133.33.33.4
Logging to 172.16.1.162
Last logging buffer cleared: Jan 7 01:41:17
Jan 7 01:42:34: %SYSTEM:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_PKT: DHCP
594 Dynamic Host Configuration Protocol (DHCP)