C Commands

This chapter describes the Cisco NX-OS Layer 3 interfaces commands that begin with C.

clear ip arp

To clear the Address Resolution Protocol (ARP) information, use the clear ip arp command.

clear ip arp [ ip-addr | {[ event-history | all | cli | client-errors | client event | control | errors | event | ha | lcache | lcache-errors | packet | snmp | sync-event ]} | [ force-delete | statistics ] | [ mgmt mgmt-inteface-number ] | [statistics] | [tunnel-statistics] | [ vlan vlan-interface-number ] | [vpc-statistics] | [ vrf vrf-name | all | default | management ]

 
Syntax Description

ip-addr

(Optional) IPv4 source address. The format is x.x.x.x.

event-history

(Optional) Clears the event history buffers.

all

(Optional) Clears all event history buffers.

cli

(Optional) Clears CLI logs.

client-errors

(Optional) Clears client_error logs.

client-event

(Optional) Clears client_event logs.

control

(Optional) Clears ARP control event logs.

errors

(Optional) Clears inst error logs.

event

(Optional) Clears internal event logs.

ha

(Optional) Clears HA and GR logs.

lcache

(Optional) Clears lcache logs.

lcache-errors

(Optional) Clears lcache_error logs.

packet

(Optional) Inst packet logs.

snmp

(Optional) SNMP logs.

sync-event

(Optional) CFS and MCECM related event logs.

force-delete

(Optional) Clears the entries from the ARP table without a refresh.

mgmt mgmt-inteface-number

(Optional) Management interface

statistics

(Optional) Clears ARP statistics.

ethernet

(Optional) Ethernet IEEE 802.3z

loopback

(Optional) Loopback interface

mgmt

(Optional) Management Interface

port-channel

(Optional) Port channel interface

vlan

(Optional) VLAN interface

vrf

(Optional) Displays per-VRF information

tunnel-statistics

(Optional) Clears ARP statistics for tunneled packets

vlan vlan-interface-number

(Optional) VLAN interface

vpc-statistics

(Optional) Clears ARP vPC statistics

vrf vrf-name

(Optional) Specifies the virtual routing and forwarding (VRF) context name. The name can be any case-sensitive, alphanumeric string up to 32 characters.

all

(Optional) Clears the ARP information from all VRF entries.

default

(Optional) Clears the ARP information from the default VRF.

management

(Optional) Clears the ARP information from the management VRF.

 
Command Default

None

 
Command Modes

Any command mode

 
Command History

Release
Modification

6.0(2)N1(2)

Support for the QSFP+ GEM was added.

5.2(1)N1(1)

This command was introduced.

Examples

This example shows how to clear the ARP table:

switch# clear ip arp
 

 
Related Commands

Command
Description

show ip arp

Displays information about ARP.

clear ip interface statistics

To clear IP interface statistics, use the clear ip interface statistics command.

clear ip interface statistics

 
Syntax Description

This command has no arguments or keywords.

 
Command Default

None

 
Command Modes

Any command mode

 
Command History

Release
Modification

5.2(1)N1(1)

This command was introduced.

Examples

This example shows how to clear the IP interface statistics:

switch# clear ip interface statistics
 

 
Related Commands

Command
Description

show ip interface

Displays IP interface information.

clear ipv6 icmp interface statistics

To clear statistics about ICMPv6, use the clear ipv6 icmp interface statistics command.

clear ipv6 icmp interface statistics [ type number ]

 
Syntax Description

type

(Optional) Interface type. Use ? to see the list of supported interfaces.

number

(Optional) Interface number. Use ? to see the range.

 
Defaults

None

 
Command Modes

Any command mode

 
Command History

Release
Modification

5.2(1)N1(1)

This command was introduced.

 
Usage Guidelines

This command does not require a license.

Examples

This example shows how to clear the ICMPv6 statistics:

switch(config-if)# clear ipv6 icmp interface statistics

 
Related Commands

Command
Description

ipv6 icmp

Configures ICMPv6 on an interface.

clear ipv6 nd interface statistics

To clear information about Neighbor Discovery (ND), use the clear ipv6 nd interface statistics command.

clear ipv6 nd interface statistics [ type number ]

 
Syntax Description

type

(Optional) Interface type. Use ? to see the list of supported interfaces.

number

(Optional) Interface number. Use ? to see the range.

 
Defaults

None

 
Command Modes

Any command mode

 
Command History

Release
Modification

5.2(1)N1(1)

This command was introduced.

 
Usage Guidelines

This command does not require a license.

Examples

This example shows how to clear the ND information:

switch(config-if)# clear ipv6 nd interface statistics

 
Related Commands

Command
Description

ipv6 nd

Configures ICMPv6 ND on an interface.

clear ipv6 neighbor

To clear IPv6 neighbors, use the clear ipv6 neighbor command.

clear ipv6 neighbor [ type number ] [ force-clear ] [ vrf vrf-nam e]

 
Syntax Description

type

(Optional) Interface type. Use ? to see the list of supported interfaces.

number

(Optional) Interface number. Use ? to see the range.

force-clear

(Optional) Clears the IPv6 neighbor cache withouth a refresh.

vrf vrf-name

(Optional) Specifies the virtual router context (VRF) name. The name can be any case-sensitive, alphanumeric string up to 63 characters.

 
Defaults

None

 
Command Modes

Any command mode

 
Command History

Release
Modification

5.2(1)N1(1)

This command was introduced.

 
Usage Guidelines

Use the clear ipv6 neighbor command to clear the IPv6 adjacency table.

This command does not require a license.

Examples

This example shows how to clear the IPv6 neighbors:

switch# clear ipv6 neighbor
 

 
Related Commands

Command
Description

ipv6 nd

Configures ICMPv6 ND on an interface.