Cisco Catalyst 3550 User Manual

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Catalyst 3550 Multilayer Switch Command Reference
OL-8566-01
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
show ip dhcp snooping binding
show ip dhcp snooping binding
Use the show ip dhcp snooping binding user EXEC command to display the DHCP snooping binding
table and configuration information for all interfaces on a switch.
show ip dhcp snooping binding [ip-address] [mac-address] [interface interface-id] [vlan vlan-id]
[
| {begin | exclude | include} expression]
Syntax Description
Command Modes User EXEC
Command History
Usage Guidelines The show ip dhcp snooping binding command output shows the dynamically configured bindings.
If DHCP snooping is enabled and an interface changes to the down state, the switch does not delete the
statically configured bindings.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output
do not appear, but the lines that contain Output appear.
Examples This example shows how to display the DHCP snooping binding entries for a switch:
Switch> show ip dhcp snooping binding
MacAddress IpAddress Lease(sec) Type VLAN Interface
------------------ --------------- ---------- ------------- ---- --------------------
01:02:03:04:05:06 10.1.2.150 9837 dhcp-snooping 20 GigabitEthernet0/1
00:D0:B7:1B:35:DE 10.1.2.151 237 dhcp-snooping 20 GigabitEthernet0/2
Total number of bindings: 2
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 GigabitEthernet0/1
Total number of bindings: 1
ip-address (Optional) Specify the binding entry IP address.
mac-address (Optional) Specify the binding entry MAC address.
interface interface-id (Optional) Specify the binding input interface.
vlan vlan-id (Optional) Specify the binding entry VLAN.
| begin Display begins with the line that matches the expression.
| exclude Display excludes lines that match the expression.
| include Display includes lines that match the specified expression.
expression Expression in the output to use as a reference point.
Release Modification
12.1(19)EA1 This command was introduced
12.2(25)SE The dynamic and static keywords were removed.

Cisco Catalyst 3550 Specifications

General

Category	Switch
QoS	Yes
Form Factor	Rack-mountable
Manageable	Yes
RAM	64 MB
Model	Catalyst 3550
Uplink Ports	2 x GBIC (Gigabit Interface Converter) or SFP (Small Form-factor Pluggable)
Layer Support	Layer 3
VLAN Support	Yes
MAC Address Table Size	12000 entries
Routing Protocol	EIGRP
Features	QoS
Operating Temperature	32 to 113°F (0 to 45°C)
Operating Humidity	10 - 95% (non-condensing)
Ports	24 or 48 10/100 ports