Dell PowerEdge M520 Dell PowerConnect M6220/M6348/M8024 Switches Configuration - Page 46

CLI Examples, Example #6 Con DHCP snooping database Persistency interval

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DHCP snooping can be configured on switching VLANs and routing VLANs. When a DHCP packet is received on a routing VLAN, the DHCP snooping application applies its filtering rules and updates the bindings database. If a client message passes filtering rules, the message is placed into the software forwarding path where it may be processed by the DHCP relay agent or forwarded as an IP packet. CLI Examples The commands below show examples of configuring DHCP Snooping for the switch and for individual interfaces. Example #1 Enable DHCP snooping for the switch console(config)#ip dhcp snooping console(config)#exit console# Example #2 Enable DHCP snooping on a VLAN console(config)#ip dhcp snooping vlan 1 console(config)#exit console# Example #3 Enable DHCP snooping's Source MAC verification console(config)#ip dhcp snooping verify mac-address console(config)#exit Example #4 Configure DHCP snooping database remote storage parameters console(config)#ip dhcp snooping database tftp://10.131.11.1/dsDb.txt console(config)# console(config)#exit Example #5 Configure DHCP snooping database Local storage parameters console(config)#ip dhcp snooping database local console(config)# console(config)#exit Example #6 Configure DHCP snooping database Persistency interval console(config)#ip dhcp snooping database write-delay 500 console(config)# console(config)#exit 46 Switching Configuration

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46
Switching Configuration
DHCP snooping can be configured on switching VLANs and routing VLANs. When a DHCP packet is
received on a routing VLAN, the DHCP snooping application applies its filtering rules and updates the
bindings database. If a client message passes filtering rules, the message is placed into the software
forwarding path where it may be processed by the DHCP relay agent or forwarded as an IP packet.
CLI Examples
The commands below show examples of configuring DHCP Snooping for the switch and for individual
interfaces.
Example #1 Enable DHCP snooping for the switch
console(config)#ip dhcp snooping
console(config)#exit
console#
Example #2 Enable DHCP snooping on a VLAN
console(config)#ip dhcp snooping vlan 1
console(config)#exit
console#
Example #3 Enable DHCP snooping's Source MAC verification
console(config)#ip dhcp snooping verify mac-address
console(config)#exit
Example #4 Configure DHCP snooping database remote storage parameters
console(config)#ip dhcp snooping database tftp://10.131.11.1/dsDb.txt
console(config)#
console(config)#exit
Example #5 Configure DHCP snooping database Local storage parameters
console(config)#ip dhcp snooping database local
console(config)#
console(config)#exit
Example #6 Configure DHCP snooping database Persistency interval
console(config)#ip dhcp snooping database write-delay 500
console(config)#
console(config)#exit