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clear dhcp server binding

Syntax

clear dhcp server binding <address><all><interface interface-name><interfaces-vlan><interfaces-wildcard><logical-system logical-system-name><routing-instance routing-instance-name>

Release Information

Command introduced in Junos OS Release 9.0.

Options interfaces-vlan and interfaces-wildcard added in Junos OS Release 12.1.

Description

Clear the binding state of a Dynamic Host Configuration Protocol (DHCP) client from the client table on the extended DHCP local server.

Options

address
—

(Optional) Clear the binding state for the DHCP client, using one of the following entries:

  • ip-address—The specified IP address.
  • mac-address—The specified MAC address.
  • session-id—The specified session ID.
all
—

(Optional) Clear the binding state for all DHCP clients.

interface interface-name
—

(Optional) Clear the binding state for DHCP clients on the specified interface.

Note: This option clears all bindings whose initial login requests were received over the specified interface. Dynamic demux login requests are not received over the dynamic demux interface, but rather the underlying interface of the dynamic demux interface. To clear a specific dynamic demux interface, use the ip-address or mac-address options.

interfaces-vlan
—

(Optional) Clear the binding state on the interface VLAN ID and S-VLAN ID.

interfaces-wildcard
—

(Optional) Clear bindings on a set of interfaces. This option supports the use of the wildcard character (*).

logical-system logical-system-name
—

(Optional) Clear the binding state for DHCP clients on the specified logical system.

routing-instance routing-instance-name
—

(Optional) Clear the binding state for DHCP clients on the specified routing instance.

Required Privilege Level

view

 

Related Documentation

 

List of Sample Output

clear dhcp server binding <ip-address>
clear dhcp server binding all
clear dhcp server binding interface
clear dhcp server binding <interfaces-vlan>
clear dhcp server binding <interfaces-wildcard>

Output Fields

See show dhcp server binding for an explanation of output fields.

Sample Output

clear dhcp server binding <ip-address>

The following sample output displays the address bindings in the DHCP client table on the extended DHCP local server before and after the clear dhcp server binding command is issued.

user@host> show dhcp server binding
2 clients, (0 bound, 0 selecting, 0 renewing, 0 rebinding)

IP address       Hardware address   Type     Lease expires at
100.20.32.1      90:00:00:01:00:01  active   2007-01-17 11:38:47 PST
100.20.32.3      90:00:00:02:00:01  active   2007-01-17 11:38:41 PST
user@host> clear dhcp server binding 10.20.32.1
user@host> show dhcp server binding
1 clients, (0 bound, 0 selecting, 0 renewing, 0 rebinding)

IP address       Hardware address   Type     Lease expires at
100.20.32.3      90:00:00:02:00:01  active   2007-01-17 11:38:41 PST


clear dhcp server binding all
The following command clears all DHCP local server bindings:
user@host> clear dhcp server binding all
clear dhcp server binding interface
The following command clears DHCP local server bindings on a
specific interface:
user@host> clear dhcp server binding interface
fe-0/0/2 
clear dhcp server binding <interfaces-vlan>
The following command uses the interfaces-vlan option to clear all DHCP local server bindings on top of the underlying
interface ae0, which clears DHCP bindings on all demux VLANs
on top of ae0:
user@host> clear dhcp server binding ae0 
clear dhcp server binding <interfaces-wildcard>
The following command uses the interfaces-wildcard option to clear all DHCP local server bindings over a specific interface:
user@host> clear dhcp server binding ge-1/0/0.* 
Published: 2013-03-14

						















    

        
        
    











    

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