Operational Notes - HP ProCurve 6120G/XG Manual

A message is logged in the system event log if the DHCP binding database fails
to update.
To display the contents of the DHCP snooping binding database, enter this
command.
Syntax:
ProCurve(config)# show dhcp-snooping binding
MacAddress
-------------
22.22.22.22.22.22
Figure 10-8. Example Showing DHCP Snooping Binding Database Contents
N o t e
If a lease database is configured, the switch drops all DHCP packets until the
lease database is read. This only occurs when the switch reboots and is
completed quickly. If the switch is unable to read the lease database from the
tftp server, it waits until that operation times out and then begins forwarding
DHCP packets.
Enabling Debug Logging
To enable debug logging for DHCP snooping, use this command.
Syntax: [no] debug dhcp-snooping [agent | event | packet]

Operational Notes

■
■
show dhcp-snooping binding
IP VLAN Interface Time left
--------------- ---- --------- ---------
10.0.0.1 4
agent
Displays DHCP snooping agent messages.
event
Displays DHCP snooping event messages.
packet
Displays DHCP snooping packet messages.
DHCP is not configurable from the web management interface or menu
interface.
If packets are received at too high a rate, some may be dropped and need
to be re-transmitted.
Configuring Advanced Threat Protection
B2 1600
DHCP Snooping
10-13