Cisco Catalyst 3120 Command Reference Guide

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Cisco Catalyst Blade Switch 3120 for HP Command Reference
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Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands
show ip dhcp snooping binding
This example shows how to display the DHCP snooping binding entries for a specific IP address:
Switch> show ip dhcp snooping binding 10.1.2.150
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
01:02:03:04:05:06 10.1.2.150 9810 dhcp-snooping 20 GigabitEthernet2/0/1
Total number of bindings: 1
This example shows how to display the DHCP snooping binding entries for a specific MAC address:
Switch> show ip dhcp snooping binding 0102.0304.0506
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
01:02:03:04:05:06 10.1.2.150 9788 dhcp-snooping 20 GigabitEthernet2/0/2
Total number of bindings: 1
This example shows how to display the DHCP snooping binding entries on a port:
Switch> show ip dhcp snooping binding interface gigabitethernet2/0/2
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
00:30:94:C2:EF:35 10.1.2.151 290 dhcp-snooping 20 GigabitEthernet2/0/2
Total number of bindings: 1
This example shows how to display the DHCP snooping binding entries on VLAN 20:
Switch> show ip dhcp snooping binding vlan 20
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
01:02:03:04:05:06 10.1.2.150 9747 dhcp-snooping 20 GigabitEthernet2/0/1
00:00:00:00:00:02 10.1.2.151 65 dhcp-snooping 20 GigabitEthernet2/0/2
Total number of bindings: 2
Table 2-25 describes the fields in the show ip dhcp snooping binding command output:
Related Commands
Table 2-25 show ip dhcp snooping binding Command Output
Field Description
MacAddress Client hardware MAC address
IpAddress Client IP address assigned from the DHCP server
Lease(sec) Remaining lease time for the IP address
Type Binding type
VLAN VLAN number of the client interface
Interface Interface that connects to the DHCP client host
Total number of bindings Total number of bindings configured on the switch
Note The command output might not show the total number of
bindings. For example, if 200 bindings are configured on the
switch and you stop the display before all the bindings appear, the
total number does not change.
Command Description
ip dhcp snooping binding Configures the DHCP snooping binding database
show ip dhcp snooping Displays the DHCP snooping configuration.

Cisco Catalyst 3120 Specifications

General

Brand	Cisco
Model	Catalyst 3120
Category	Switch
Language	English