show ip dhcp lease
Display lease information about the dynamic IP address currently assigned to a DHCP client-enabled
interface.
Syntax
show ip dhcp lease [interface
type slot/port
]
Parameters
interface
type
slot/port
Display DHCP lease information on the specified interface.
• For a 10-GigabitEthernet Ethernet interface, enter
TenGigabitEthernet
then the slot/port numbers; for
example,
tengigabitethernet 1/3
.
• For a 40-GigabitEthernet Ethernet interface, enter
FortyGigabitEthernet
then the slot/port numbers;
for example,
fortygigabitethernet 0/2
.
Defaults
Display DHCP lease information on all DHCP client-enabled interfaces on the
switch.
Command
Modes
EXEC Privilege
Command
History
Version 8.3.16.1
Introduced on the MXL 10/40GbE Switch IO Module.
Commands to Configure Secure DHCP
DHCP, as defined by RFC 2131, provides no authentication or security mechanisms. Secure DHCP is a
suite of features that protects networks that use dynamic address allocation from spoofing and attacks.
arp inspection
Enable dynamic arp inspection (DAI) on a VLAN.
Syntax
arp inspection
Defaults
Disabled
Command
Modes
INTERFACE VLAN
Command
History
Version 8.3.16.1
Introduced on the MXL 10/40GbE Switch IO Module.
Related
Commands
arp inspection-trust
— specifies a port as trusted so that ARP frames are not
validated against the binding table.
496
Dynamic Host Configuration Protocol (DHCP)