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Home Documentation Junos OS Junos CLI Reference CLI Reference C

Junos CLI Reference

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clear dhcp relay binding

date_range 19-Nov-23
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Syntax

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

Description

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

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.

dual-stack

(Optional) Clear the binding state for DHCPv4 clients and the associated DHCPv6 bindings in the single-session DHCP dual stack. DHCPv6 clients created in a DHCPv6-only stack are not affected.

interface interface-name

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

interfaces-vlan

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

interfaces-wildcard

(Optional) The set of interfaces on which to clear bindings. 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

Output Fields

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

Sample Output

clear dhcp relay binding

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

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user@host> show dhcp relay binding
IP address       Hardware address   Type     Lease expires at
198.51.100.32     00:00:5e:00:53:01  active   2007-02-08 16:41:17 EST
192.168.14.8      00:00:5e:00:53:02  active   2007-02-10 10:01:06 EST


user@host> clear dhcp relay binding 198.51.100.32
 
user@host> show dhcp relay binding
IP address       Hardware address   Type     Lease expires at
192.168.14.8      00:00:5e:00:53:02  active   2007-02-10 10:01:06 EST

clear dhcp relay binding all

The following command clears all DHCP relay agent bindings:

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user@host> clear dhcp relay binding all

clear dhcp relay binding dual-stack all

The following command clears all DHCP relay agent bindings for all DHCPv4 clients and the associated DHCPv6 bindings in the single-session DHCP dual stack. DHCPv6 clients created in a DHCPv6-only stack are not affected.

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user@host> clear dhcp relay binding dual-stack all

clear dhcp relay binding interface

The following command clears DHCP relay agent bindings on a specific interface:

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user@host> clear dhcp relay binding interface fe-0/0/3

clear dhcp relay binding <interfaces-vlan>

The following command uses the interfaces-vlan option to clear all DHCP relay agent bindings on top of the underlying interface ae0, which clears DHCP bindings on all demux VLANs on top of ae0:

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user@host> clear dhcp relay binding interface ae0

clear dhcp relay binding <interfaces-wildcard>

The following command uses the interfaces-wildcard option to clear all DHCP relay agent bindings over a specific interface:

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user@host> clear dhcp relay binding ge-1/0/0.*

Release Information

Command introduced in Junos OS Release 8.3.

Options all and interface added in Junos OS Release 8.4.

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

Option dual-stack added in Junos OS Release 15.1.

Related Documentation

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