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 | ethernet slot/port[.sub_if] | loopback if_number | port-channel number[.sub_if_number]] [force-delete | statistics] [vrf vrf-name | all | default | management]

Syntax Description

ip-addr

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

ethernet slot/port

(Optional) Specifies the Ethernet interface and the slot number and port number. The slot number is from 1 to 255, and the port number is from 1 to 128.

sub_if

(Optional) Specifies the Ethernet subinterface port number. The range is from 1 to 48.

loopback if_number

(Optional) Specifies the loopback interface. The loopback interface number is from 0 to 1023.

port-channel number

(Optional) Specifies the EtherChannel interface and EtherChannel number. The range is from 1 to 4096.

.sub_if_number

(Optional) Subinterface number. The range is from 1 to 4093.

force-delete

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

statistics

(Optional) Clears ARP 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

5.0(3)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 
        
 		 
      
 
      
 
       
 5.0(3)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) 
 		 
       
 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) 
 		 
       
 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-name] 
 
    
   
 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) 
 		 
       
 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.