C Commands

This chapter describes the Cisco NX-OS IGMP commands that begin with C.

clear ip igmp event-history

To clear information in the IGMP event history buffers, use the clear ip igmp event-history command.

clear ip igmp event-history {cli | debugs | errors | events | ha | igmp-internal | mtrace | policy | vrf}

Syntax Description

cli

Clears the CLI event history buffer.

debugs

Clears the debug event history buffer.

events

Clears the event history buffer.

ha

Clears the high availability (HA) event history buffer.

igmp-internal

Clears the IGMP internal event history buffer.

mtrace

Clears the mtrace event history buffer.

policy

Clears the polilcy event history buffer.

vrf

Clears the virtual routing and forwarding (VRF) event history buffer.


Command Default

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 information in the IGMP HA event history buffer: 

switch(config)# clear ip igmp event-history ha

switch(config)#

 
   
 
    
   
 Related Commands
 
   
 
    
 
      
      
      
 
        
        

          Command 
        
 		 
        
        

          Description 
        
 		 
      
 
      
 
       
 ip igmp event-history 
 		 
       
 Configures the size of the IGMP event history buffers. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
     
    
    
    
   
 clear ip igmp groups 
 
    
   
 To clear IGMP-related information in the IPv4 multicast routing table, use the clear ip igmp groups command. 
 
    
   
clear ip igmp groups {* | group [source] | group-prefix} [vrf {vrf-name | all | default | management}] 
 
    
   
 Syntax Description
 
   
 
    
 
      
      
      
 
       
 * 
 		 
       
 Specifies all routes. 
 		 
      
 
      
 
       
 group 
 		 
       
 Group address in the format A.B.C.D. 
 		 
      
 
      
 
       
 source 
 		 
       
 (Optional) Source (S, G) route. 
 		 
      
 
      
 
       
 group-prefix 
 		 
       
 Group prefix in the format A.B.C.D/length. 
 		 
      
 
      
 
       
 vrf 
 		 
       
 (Optional) Clears the virtual routing and forwarding (VRF) instance information. 
 		 
      
 
      
 
       
 vrf-name 
 		 
       
 VRF name. The name can be a maximum of 32 alphanumeric characters and is case sensitive. 
 		 
      
 
      
 
       
 all 
 		 
       
 Specifies that all VRF entries be cleared from the IPv4 multicast routing table. 
 		 
      
 
      
 
       
 default 
 		 
       
 Specifies that the default VRF entry be cleared from the IPv4 multicast routing table. 
 		 
      
 
      
 
       
 management 
 		 
       
 Specifies that the management VRF entry be cleared from the IPv4 multicast routing table. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
    
   
 Command Default 
 
    
   
 None 
 
    
   
 Command Modes 
 
    
   
 Any command mode 
 
    
   
 Command History
 
   
 
    
 
      
      
      
 
        
        

          Release 
        
 		 
        
        

          Modification 
        
 		 
      
 
      
 
       
 5.2(1)N1(1) 
 		 
       
 This command was introduced. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
    
   
 Usage Guidelines 
 
    
   
 The clear ip igmp route command is an alternative form of this command. 
 
    
   
 This command does not require a license. 
 
    
   
 Examples 
 
    
   
 This example shows how to clear all the IGMP-related routes in the IPv4 multicast routing table: 
 
    
   
 
    
switch(config)# clear ip igmp groups *

 
   
 
    
   
 
    
switch(config)# 

 
   
 
    
   
 Related Commands
 
   
 
    
 
      
      
      
 
        
        

          Command 
        
 		 
        
        

          Description 
        
 		 
      
 
      
 
       
 clear ip igmp route 
 		 
       
 Clears IGMP-related information in the IPv4 multicast routing table. 
 		 
      
 
      
 
       
 show ip mroute 
 		 
       
 Displays information about the IPv4 multicast routing table. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
     
    
    
    
   
 clear ip igmp interface statistics 
 
    
   
 To clear the IGMP statistics for an interface, use the clear ip igmp interface statistics command. 
 
    
   
clear ip igmp interface statistics [ethernet slot/[QSFP-module/]port | loopback if_number | port-channel number[.sub_if_number]] 
 
    
   
 Syntax Description
 
   
 
    
 
      
      
      
 
       
 ethernet slot/[QSFP-module/]port 
 		 
       
 (Optional) Specifies the Ethernet interface and the slot number and port number. The slot number is from 1 to 255. The QSFP-module number is from 1 to 4. The port number is from 1 to 128. 
 
 Note The QSFP-module number applies only to the QSFP+ Generic Expansion Module (GEM). 
 		 
      
 
      
 
       
 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. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
    
   
 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. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
    
   
 Usage Guidelines 
 
    
   
 This command does not require a license. 
 
    
   
 Examples 
 
    
   
 This example shows how to clear IGMP statistics for an interface: 
 
    
   
 
    
switch# clear ip igmp interface statistics ethernet 2/1

 
   
 
    
   
 
    
switch# 

 
   
 
    
   
 Related Commands
 
   
 
    
 
      
      
      
 
        
        

          Command 
        
 		 
        
        

          Description 
        
 		 
      
 
      
 
       
 show ip igmp interface 
 		 
       
 Displays information about IGMP interfaces. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
     
    
    
    
   
 clear ip igmp route 
 
    
   
 To clear IGMP-related information in the IPv4 multicast routing table, use the clear ip igmp route command. 
 
    
   
clear ip igmp route {* | group [source] | group-prefix} [vrf {vrf-name | all | default | management}] 
 
    
   
 Syntax Description
 
   
 
    
 
      
      
      
 
       
 * 
 		 
       
 Specifies all routes. 
 		 
      
 
      
 
       
 group 
 		 
       
 Group address in the format A.B.C.D. 
 		 
      
 
      
 
       
 source 
 		 
       
 (Optional) Source (S, G) route. 
 		 
      
 
      
 
       
 group-prefix 
 		 
       
 Group prefix in the format A.B.C.D/length. 
 		 
      
 
      
 
       
 vrf 
 		 
       
 (Optional) Clears the virtual routing and forwarding (VRF) instance information. 
 		 
      
 
      
 
       
 vrf-name 
 		 
       
 VRF name. The name can be a maximum of 32 alphanumeric characters and is case sensitive. 
 		 
      
 
      
 
       
 all 
 		 
       
 Specifies that all VRF entries be cleared from the IPv4 multicast routing table. 
 		 
      
 
      
 
       
 default 
 		 
       
 Specifies that the default VRF entry be cleared from the IPv4 multicast routing table. 
 		 
      
 
      
 
       
 management 
 		 
       
 Specifies that the management VRF entry be cleared from the IPv4 multicast routing table. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
    
   
 Command Default 
 
    
   
 None 
 
    
   
 Command Modes 
 
    
   
 Any command mode 
 
    
   
 Command History
 
   
 
    
 
      
      
      
 
        
        

          Release 
        
 		 
        
        

          Modification 
        
 		 
      
 
      
 
       
 5.2(1)N1(1) 
 		 
       
 This command was introduced. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
    
   
 Usage Guidelines 
 
    
   
 The clear ipigmp groups command is an alternative form of this command. 
 
    
   
 This command does not require a license. 
 
    
   
 Examples 
 
    
   
 This example shows how to clear all the IGMP-related routes in the IPv4 multicast routing table: 
 
    
   
 
    
switch(config)# clear ip igmp route *

 
   
 
    
   
 
    
switch(config)# 

 
   
 
    
   
 Related Commands
 
   
 
    
 
      
      
      
 
        
        

          Command 
        
 		 
        
        

          Description 
        
 		 
      
 
      
 
       
 clear ip igmp groups 
 		 
       
 Clears IGMP-related information in the IPv4 multicast routing table. 
 		 
      
 
      
 
       
 show ip mroute 
 		 
       
 Displays information about the IPv4 multicast routing table.