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IP DHCP Snooping Commands
ip dhcp snooping database
Cisco 220 Series Smart Plus Switches Command Line Interface Reference Guide Release 1.0.0.x
Syntax
ip dhcp snooping database {flash | tftp {
VALUE
timeout
| write-delay
no ip dhcp snooping database [timeout | write-delay]
Parameters
•
flash—Specifies that the database agent is in the flash memory.
IPv4-ADDR NAME
•
tftp
and the file name of the backup file.
HOSTNAME NAME
•
tftp
server and the file name of the backup file.
VALUE
•
timeout
database transfer process after the DHCP snooping binding database
changes. (Range: 0 to 86400 seconds. Use 0 to define an infinite duration.)
•
write-delay
VALUE
transfer should be delayed after the binding database changes. (Range: 15
to 86400 seconds)
Default Configuration
The URL for the database agent is not defined.
The default timeout is 300 seconds (5 minutes).
The default write-delay is 300 seconds (5 minutes).
Command Mode
Global Configuration mode
User Guidelines
The DHCP snooping binding database can have up to 256 bindings. Because both
NVRAM and flash memory have limited storage capacity, we recommend that you
store a binding file on a TFTP server. You must create an empty file at the
configured URL on network-based URLs (such as TFTP and FTP) before the switch
can write bindings to the binding file at that URL for the first time.
To save the DHCP snooping binding database in the switch NVRAM, use the ip
dhcp snooping database flash command.
To disable the agent, use the no ip dhcp snooping database command.
IPv4-ADDR NAME
VALUE
}
—Specifies the IP address of the remote TFTP server
—Specifies the hostname of the remote TFTP
—Specifies the timeout in seconds when to stop the
—Specifies the duration in seconds for which the
16
HOSTNAME NAME
|
} |
250
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