Configuring Advanced Threat Protection
DHCP Snooping
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: show dhcp-snooping binding
ProCurve(config)# show dhcp-snooping binding
MacAddress IP VLAN Interface Time left
------------- --------------- ---- --------- --------
-
22.22.22.22.22.22 10.0.0.1 4 B2 1600
Figure 10-8. Example Showing DHCP Snooping Binding Database Contents
Note 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]
agent Displays DHCP snooping agent messages.
event Displays DHCP snooping event messages.
packet Displays DHCP snooping packet messages.
Operational Notes
â– DHCP is not configurable from the web management interface or menu
interface.
â– If packets are received at too high a rate, some may be dropped and need
to be re-transmitted.
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