D-Link DXS-3600 Series Cli Reference Manual page 379

DXS-3600 Series Layer 3 Managed 10Gigabit Ethernet Switch CLI Reference Guide
Command Mode
User EXEC or Any Configuration Mode.
Command Default Level
Level: 1.
Usage Guideline
Use this command to display the content of the DHCP server screen log buffer. The buffer keeps the
information of server messages that violates the screening. The number of occurrences of the same
violation and the latest time of the occurrence are tracked.
Example
This example shows how to display the DHCP server screen log buffer.
Switch# show ip dhcp server-screen log
Total log buffer size: 64
VLAN
---------- -------------------- --------------------- -----------------------------
100
100
Total Entries: 2
Switch#
23-7 snmp-server enable traps dhcp-server-screen
This command is used to enable the sending of SNMP notifications for forged DHCP server attacking.
Use the no command to disable the sending of SNMP notifications.
snmp-server enable traps dhcp-server-screen
no snmp-server enable traps dhcp-server-screen
Parameters
None.
Default
By default, this feature is disabled.
Command Mode
Global Configuration Mode.
Command Default Level
Level: 12.
Usage Guideline
When DHCP server screening is enabled and if the switch received a forged DHCP server packet, the
switch will log the event if any attack packet is received. Use this command to enable or disable the
sending of SNMP notifications for such events.
Server IP
10.20.1.1
10.58.2.30
374
Client MAC
00-20-30-40-50-60
10-22-33-44-50-60
Occurrence
06:30:37, 2013-02-07
06:31:42, 2013-02-07