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

5.0(3)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

5.0(3)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 / port | loopback if_number | port-channel number [. sub_if_number ]]

 
Syntax Description

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.

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

5.0(3)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

5.0(3)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.