ip dhcp snooping
Enable DHCP Snooping globally.
C-Series, S-Series, Z-Series, S4810
Syntax
[no] ip dhcp snooping
Defaults
Disabled.
Command Modes
CONFIGURATION
Command History
Version 8.3.11.1
Introduced on the Z9000.
Version 8.3.7.0
Introduced on the S4810.
Version 7.8.1.0
Introduced on the C-Series and S-Series.
Usage
Information
When enabled, no learning takes place until you enable snooping on a VLAN. After disabling
DHCP Snooping, the binding table is deleted and Option 82, IP Source Guard, and Dynamic ARP
Inspection are disabled.
Related
Commands
ip dhcp snooping vlan
– enables DHCP Snooping on one or more VLANs.
ip dhcp snooping binding
Create a static entry in the DHCP binding table.
C-Series, S-Series, Z-Series, S4810
Syntax
[no] ip dhcp snooping binding mac
address
vlan-id
vlan-id
ip
ip-address
interface
type slot/port
lease
number
Parameters
mac
address
Enter the keyword
mac
followed by the MAC address of the host to
which the server is leasing the IP address.
vlan-id
vlan-id
Enter the keywords
vlan-id
followed by the VLAN to which the
host belongs. The range is 2 to 4094.
ip
ip-address
Enter the keyword
ip
followed by the IP address that the server is
leasing.
interface
type
Enter the keyword
interface
followed by the type of interface to
which the host is connected.
•
For an 10/100 Ethernet interface, enter the keyword
fastethernet
.
•
For a Gigabit Ethernet interface, enter the keyword
gigabitethernet
.
•
For a SONET interface, enter the keyword
sonet
.
•
For a Ten Gigabit Ethernet interface, enter the keyword
tengigabitethernet
.
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Summary of Contents for Force10 Z9000
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