Ip Dhcp Snooping Delete-By-Client - Centrecom FS980M/9 Command Reference Manual

DHCP S C
NOOPING OMMANDS
- -
IP DHCP SNOOPING DELETE BY CLIENT

ip dhcp snooping delete-by-client

Overview Use this command to set the switch to remove a dynamic entry from the DHCP
snooping database when it receives a valid DHCP release message with matching
IP address, VLAN ID, and client hardware address on an untrusted port, and to
discard release messages that do not match an entry in the database.
Use the no variant of this command to set the switch to forward DHCP release
messages received on untrusted ports without removing any entries from the
database.
ip dhcp snooping delete-by-client
Syntax
no ip dhcp snooping delete-by-client
Default Enabled: by default, DHCP lease entries are deleted from the DHCP snooping
database when matching DHCP release messages are received.
Mode Global Configuration
Usage DHCP clients send a release message when they no longer wish to use the IP
address they have been allocated by a DHCP server. Use this command to enable
DHCP snooping to use the information in these messages to remove entries from
its database immediately. Use the no variant of this command to ignore these
release messages. Lease entries corresponding to ignored DHCP release messages
eventually time out when the lease expires.
Examples To set the switch to delete DHCP snooping lease entries from the DHCP snooping
database when a matching release message is received, use the commands:
awplus#
awplus(config)#
To set the switch to forward and ignore the content of any DHCP release messages
it receives, use the commands:
awplus#
awplus(config)#
Related show ip dhcp snooping
Commands
613-50137-01 Rev A
configure terminal
ip dhcp snooping delete-by-client
configure terminal
no ip dhcp snooping delete-by-client
Command Reference for FS980M Series
AlliedWare Plus™ Operating System - Version 5.4.6-2.x
1178