ZyXEL Communications Ethernet Switch User Manual

Ethernet Switch CLI Reference Guide
75
CHAPTER 15
DHCP Snooping & DHCP VLAN
Commands
Use the dhcp snooping commands to configure the DHCP snooping on the Switch and the
dhcp vlan commands to specify a DHCP VLAN on your network. DHCP snooping filters
unauthorized DHCP packets on the network and builds the binding table dynamically.
15.1 Command Summary
The following section lists the commands for this feature.
Table 46 dhcp snooping Command Summary
COMMAND DESCRIPTION M P
show dhcp snooping Displays DHCP snooping configuration on the Switch. E 3
show dhcp snooping binding Displays the DHCP binding table. E 3
show dhcp snooping database Displays DHCP snooping database update statistics and
settings.
E3
show dhcp snooping database
detail
Displays DHCP snooping database update statistics in full
detail form.
E3
dhcp snooping Enables DHCP Snooping on the Switch. C 13
no dhcp snooping Disables DHCP Snooping on the Switch. C 13
dhcp snooping database <tftp://
host/filename>
Specifies the location of the DHCP snooping database. The
location should be expressed like this: tftp://{domain name
or IP address}/directory, if applicable/file name; for
example, tftp://192.168.10.1/database.txt.
C13
no dhcp snooping database Removes the location of the DHCP snooping database. C 13
dhcp snooping database timeout
<seconds>
Specifies how long (10-65535 seconds) the Switch tries to
complete a specific update in the DHCP snooping database
before it gives up.
C13
no dhcp snooping database
timeout <seconds>
Resets how long (10-65535 seconds) the Switch tries to
complete a specific update in the DHCP snooping database
before it gives up to the default value (300).
C13
dhcp snooping database write-
delay <seconds>
Specifies how long (10-65535 seconds) the Switch waits to
update the DHCP snooping database the first time the current
bindings change after an update.
C13
no dhcp snooping database write-
delay <seconds>
Resets how long (10-65535 seconds) the Switch waits to
update the DHCP snooping database the first time the current
bindings change after an update to the default value (300).
C13

ZyXEL Communications Ethernet Switch Specifications

General

Brand	ZyXEL Communications
Model	Ethernet Switch
Category	Network Router
Language	English