Support

Table Of Contents

clear kerberos server

clear kerberos srvtab entry

clear key config-key

clear log

clear logging buffer

clear logging server

clear mls entry ip

clear mls entry ipx

clear mls include ip

clear mls include ipx

clear mls multicast include

clear mls multicast statistics

clear mls nde

clear mls statistics

clear multicast router

clear ntp key

clear ntp server

clear port broadcast

clear port filter

clear port host

clear port qos cos

clear port security

clear qos config

clear qos defaultcos

clear qos ip-filter

clear qos mac-cos

clear qos map

clear qos router-mac

clear radius key

clear radius server

clear rgmp statistics

clear snmp access

clear snmp group

clear snmp notify

clear snmp targetaddr

clear snmp targetparams

clear snmp trap

clear snmp user

clear snmp view

clear spantree portvlancost

clear spantree portvlanpri

clear spantree root

clear spantree statistics

clear spantree uplinkfast

clear station

clear station counters

clear tacacs key

clear tacacs server

clear timezone

clear top

clear trunk

clear vlan

clear vlan mapping

clear vmps server

clear vmps statistics

clear vtp pruneeligible

2

clear kerberos server

Use the clear kerberos server command to clear a specified key distribution center (KDC) entry.

clear kerberos server kerberos-realm {hostname | ip-address} [port_num]

Syntax Description

kerberos-realm	Name of a Kerberos realm.
hostname	Keyword that specifies the name of host running the KDC.
ip-address	Keyword that specifies the IP address of host running the KDC.
port_num	Number of the port on the module.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

You can specify to the switch which KDC to use in a Kerberos realm. This command clears a server entry from the table.

Examples

This example shows how to clear a KDC server entered on the switch:

Console> (enable) clear kerberos server CISCO.COM 187.0.2.1 750

Kerberos Realm-Server-Port entry CISCO.COM-187.0.2.1-750  deleted

Console> (enable) 

Related Commands

set kerberos server

clear kerberos srvtab entry

Use the clear kerberos srvtab entry command to clear the SRVTAB file that is entered directly into the switch from the command line.

clear kerberos srvtab entry kerberos-principal principal-type

Syntax Description

kerberos-principal	Service on the switch.
principal-type	Version of the Kerberos SRVTAB.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear a SRVTAB file entered directly into the switch:

kerberos> (enable) clear kerberos srvtab entry host/niners.cisco.com@CISCO.COM 0

kerberos> (enable)

Related Commands

set kerberos srvtab entry
set kerberos srvtab remote

clear key config-key

Use the clear key config-key command to clear the configuration key.

clear key config-key

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to delete a DES key:

Console> (enable) clear key config-key

Related Commands

set key config-key

clear log

Use the clear log command to delete module or system error log entries.

clear log [mod_num]

Syntax Description

mod_num

(Optional) Module number.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you do not specify a module number, the system error log for the entire system is erased.

Examples

This example shows how to clear the system error log:

Console> (enable) clear log

System error log cleared.

Console> (enable) 

Related Commands

show kerberos

clear logging buffer

Use the clear logging buffer command to clear the system logging buffer.

clear logging buffer

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear the system logging buffer:

Console> (enable) clear logging buffer

System logging buffer cleared.

Console> (enable)

Related Commands

show logging buffer

clear logging server

Use the clear logging server command to delete a syslog server from the system log server table.

clear logging server ip_addr

Syntax Description

ip_addr

IP address of the syslog server to be deleted.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to delete a syslog server from the configuration:

Console> (enable) clear logging server 192.168.255.255 
System log server 192.168.255.255 removed from system log server table.

Console> (enable) 

Related Commands

set logging server
show logging

clear mls entry ip

Use the clear mls entry ip command to clear IP MLS cache entries.

clear mls entry ip [destination ip_addr_spec] [source ip_addr_spec] [flow protocol src_port
dst_port] [all]

Syntax Description

destination	(Optional) Keyword that specifies the destination address.
ip_addr_spec	(Optional) Full IP address or a subnet address in these formats: ip_addr or ip_addr/netmask or ip_addr/maskbit.
source	(Optional) Keyword that specifies the source IP address.
flow	(Optional) Keyword that specifies additional flow information (protocol family and protocol port pair) to be matched.
protocol	(Optional) Keyword that specifies flows matching the specified protocol. Valid values include TCP, UDP, ICMP, or a decimal number for other protocol families.
src_port	(Optional) Source protocol port.
dst_port	(Optional) Destination protocol port.
all	(Optional) Keyword that specifies to remove all IP MLS cache entries.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches and the Catalyst 2926G series switches.

Use the following syntax to specify an IP subnet address:

•ip_subnet_addr—This is the short subnet address format. The trailing decimal number 00 in an IP address YY.YY.YY.00 specifies the boundary for an IP subnet address. For example, 172.22.36.00 indicates a 24-bit subnet address (subnet mask 172.22.36.00/255.255.255.0), and 173.24.00.00 indicates a 16-bit subnet address (subnet mask 173.24.00.00/255.255.0.0). However, this format can identify only a subnet address of 8, 16, or 24 bits.

•ip_addr/subnet_mask—This is the long subnet address format, for example, 172.22.252.00/255.255.252.00 indicates a 22-bit subnet address. This format can specify a subnet address of any bit number. To provide more flexibility, the ip_addr is a full host address, such as 172.22.253.1/255.255.252.00.

•ip_addr/maskbits—This is the simplified long subnet address format. The mask bits specify the number of bits of the network masks. For example, 172.22.252.00/22 indicates a 22-bit subnet address. The ip_addr is a full host address, such as 193.22.253.1/22, which has the same subnet address as the ip_subnet_addr.

When you remove an RSM or a supervisor engine with the RSFC from the Catalyst 5000 family switch, it is removed immediately from the inclusion list and all the MLS entries for the RSM or RSFC are removed.

If you do not use the all argument in the clear mls entry ip command, you must specify at least one of the other three keywords (source, destination, or flow) and its arguments.

A 0 value for source_port and destination_port clears all entries. Unspecified options are treated as wildcards, and all entries are cleared.

Examples

This example shows how to clear the MLS entries with destination IP address 192.168.255.255:

Console>(enable) clear mls entry destination 192.168.255.255 

Multilayer switching entry cleared.

Console>(enable)

This example shows how to clear specific IP MLS entries for destination IP address 192.168.255.255:

Console>(enable) clear mls entry destination 192.168.255.255 source 192.168.253.254 flow tcp 520 320

Multilayer switching entry cleared

Console>(enable)

Related Commands

show mls rp

clear mls entry ipx

Use the clear mls entry ipx command to clear IPX MLS cache entries.

clear mls entry ipx [destination ipx_addr_spec] [source ipx_addr_spec] [all]

Syntax Description

destination	(Optional) Keyword that specifies the destination address.
ipx_addr_spec	(Optional) Full IPX address.
source	(Optional) Keyword that specifies the source IP address.
all	(Optional) Keyword that specifies to remove all IPX MLS cache entries.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches.

When entering the IPX address syntax, use the following format:

•IPX net address—1..FFFFFFFE

•IPX node address—x.x.x where x is 0..FFFF

•IPX address—ipx_net.ipx_node (for example 3.0034.1245.AB45, A43.0000.0000.0001)

If you do not use the all argument in the clear mls entry ipx command, you must specify at least one of the other two keywords (source, or destination) and its argument.

Examples

This example shows how to clear specific IPX MLS entries for a destination IPX address:

Console>(enable) clear mls entry ipx destination 1.00e0.fefc.6000 source 3.0034.1245.AB45 

IPX Multilayer switching entry cleared

Console>(enable)

Related Commands

show mls rp

clear mls include ip

Use the clear mls include ip command to remove routers from the IP MLS-RP include list.

clear mls include ip {ip_addr | all}

Syntax Description

ip_addr	IP address or host name of the router to remove from the IP MLS-RP include list.
all	Keyword that specifies to remove all routers from the IP MLS-RP include list.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches and the Catalyst 2926G series switches.

When you physically remove an RSM or RSFC from the Catalyst 5000 family switch, it is removed immediately from the inclusion list, and all the MLS cache entries for the RSM or RSFC are removed.

Examples

This example shows how to remove a router from the IP MLS-RP include list:

Console> (enable) clear mls include ip Stargate

Multilayer switching is disabled for router 192.168.255.255 (Stargate)

Console>(enable)

Related Commands

show mls rp

clear mls include ipx

Use the clear mls include ipx command to remove routers from the IPX MLS-RP include list.

clear mls include ipx {ip_addr | all}

Syntax Description

ip_addr	IP address or host name of the router to remove from the IPX MLS-RP include list.
all	Keyword that specifies to remove all routers from the IPX MLS-RP include list.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches.

When you physically remove an RSM or RSFC from the Catalyst 5000 family switch, it is removed immediately from the inclusion list, and all the MLS cache entries for the RSM or RSFC are removed.

Examples

This example shows how to remove a router from the IPX MLS-RP include list:

Console> (enable) clear mls include ipx Stargate

Multilayer switching is disabled for router 192.168.255.255 (Stargate)

Console>(enable)

Related Commands

show mls rp

clear mls multicast include

Use the clear mls multicast include command to remove a router from the IP multicast MLS-RP include list.

clear mls multicast include {ip_addr | all}

Syntax Description

ip_addr	IP address or host name of the router to remove from the IP MMLS-RP include list.
all	Keyword that specifies to remove all routers from the IP MMLS-RP include list.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches.

When you physically remove an RSM or RSFC from the Catalyst 5000 family switch, it is removed immediately from the inclusion list, and all the MLS cache entries for the RSM or RSFC are removed.

Examples

This example shows how to remove all routers from the MMLS-RP include list:

Console> (enable) clear mls multicast include all

All MLS routers are deleted from the include list.

Console>(enable)

This example shows how to remove a specific router from the MMLS-RP include list using its IP address:

Console> (enable) clear mls multicast include 172.20.53.4 

MLS Router 172.20.53.4 is deleted from the include list.

Console>(enable)

Related Commands

set mls multicast
show mls multicast entry

clear mls multicast statistics

Use the clear mls multicast statistics command to clear IP multicast MLS statistics for all MMLS-RPs.

clear mls multicast statistics rp

Syntax Description

rp	Keyword that specifies to clear IP multicast MLS statistics for all MMLS-RPs.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches.

Examples

This example shows how to clear IP multicast MLS statistics for all MMLS-RPs:

Console> (enable) clear mls statistics rp 

All statistics for the MLS routers in include list are cleared.

Console>(enable)

Related Commands

set mls multicast
show mls multicast entry

clear mls nde

Use the clear mls nde command to clear the MLS NetFlow Data Export (NDE) flow filter.

clear mls nde flow

Syntax Description

flow	Keyword that specifies to return the MLS NDE flow filter to the default configuration.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches and the Catalyst 2926G series switches.

Examples

This example shows how to clear the NDE filter and export all flows:

Console> (enable) clear mls nde flow 

Netflow data export filter cleared.

Console>(enable)

Related Commands

set mls nde
show mls rp

clear mls statistics

Use the clear mls statistics command to clear IP or IPX MLS statistics on the switch.

clear mls statistics

clear mls statistics protocol {protocol port | all}

Syntax Description

statistics	Keyword that specifies to clear MLS statistics, including total packets switched and total packets exported (for NDE).
protocol	Keyword that specifies the protocol for which to clear statistics.
protocol	Number of the protocol for which to clear statistics.
port	Number of the protocol port for which to clear statistics.
all	Keyword that specifies that statistics for all protocols be cleared.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches and the Catalyst 2926G series switches.

Examples

This example shows how to clear IP MLS statistics, including total packets switched and total packets exported (for NDE):

Console> (enable) clear mls statistics 

Netflow data export statistics cleared.

Console>(enable)

This example shows how to clear protocol 17, port 19344 from statistics collection:

Console> (enable) clear mls statistics protocol 17 19344

Protocol 17 port 1934 cleared from protocol statistics list.

Console>(enable)

Related Commands

show mls rp
show mls statistics

clear multicast router

Use the clear multicast router command to clear manually configured multicast router ports from the multicast router port list.

clear multicast router {mod_num/port_num | all}

Syntax Description

mod_num	Number of the module.
port_num	Number of the port on the module.
all	Keyword that specifies all multicast router ports to be cleared.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to remove port 1 on module 3 from the list of multicast router ports:

Console> (enable) clear multicast router 3/1 
Port 3/1 cleared from multicast router port list.

Console> (enable)

Related Commands

set multicast router
show multicast router

clear ntp key

Use the clear ntp key command to remove all authentication keys or a specific authentication key.

clear ntp key {public_keynum | all}

Syntax Description

public_keynum	Number of the key pair; valid values are 1 to 4292945295.
all	Keyword that specifies to remove all authentication keys.

Defaults

There is no default setting for this command.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear an NTP authentication key:

Console> (enable) clear ntp key 435

NTP key 435 cleared.

Console> (enable) 

Related Commands

set ntp key

clear ntp server

Use the clear ntp server command to remove one or more servers from the NTP server table.

clear ntp server {ip_addr | all}

Syntax Description

ip_addr	IP address of the server to remove from the server table.
all	Keyword that specifies that all server addresses in the server table be removed.

Defaults

The default configuration has no NTP servers configured.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear a specific NTP server from the server table:

Console> (enable) clear ntp server 172.20.22.191

NTP server 172.20.22.191 removed.

Console> (enable)

This example shows how to clear all NTP servers from the server table:

Console> (enable) clear ntp server all

All NTP servers cleared.

Console> (enable)

Related Commands

set ntp server
show ntp

clear port broadcast

Use the clear port broadcast command to disable broadcast/multicast suppression on one or more ports.

clear port broadcast mod/ports...

Syntax Description

mod/ports...

Number of the module and the ports.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches and the Catalyst 2926G series switches.

Examples

This example shows how to disable broadcast/multicast suppression:

Console> (enable) clear port broadcast 2/1

Broadcast traffic unlimited on ports 2/1.

Console> (enable)

Related Commands

set port broadcast
show port

clear port filter

Use the clear port filter command to clear configured MAC address or protocol filters.

clear port filter [mod_num/port_num] [mac_addr | protocol_type | all]

Syntax Description

mod_num/ port_num	(Optional) Number of the module and the ports on the module.
mac_addr	(Optional) MAC address on which the filter that you want to clear is based. This address can be entered in canonical format (00-11-33-44-55) or in noncanonical format (00:11:22:33:44:55).
protocol_type	(Optional) Protocol type on which the filter that you want to clear is based.
all	(Optional) Keyword that specifies that all filters be cleared.

Defaults

The command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches.

Examples

This example shows how to clear a MAC address filter (00:40:0b:01:bc:65) configured on port 2 of module 3:

Console> (enable) clear port filter 3/2 00:40:0b:01:bc:65

Port 3/2 filter Mac Address 00:40:0b:01:bc:65 cleared.

Console> (enable)

Related Commands

set port filter
show port filter

clear port host

Use the clear port host command to return access ports back to the system default configuration.

clear port host

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear port host 1 on module2:

Console> (enable) clear port host 2/1

Port(s)  2/1 trunk mode set to auto.

Spantree port  2/1 fast start disabled.

Port(s) 2/1 channel mode set to auto.

Console> (enable) 

This example shows how to clear port hosts 1-4 on module 2:

Console> (enable) clear port host 2/1-4

Port(s)  2/1 trunk mode set to auto.

Port(s)  2/2 trunk mode set to auto.

Port(s)  2/3 trunk mode set to auto.

Port(s)  2/4 trunk mode set to auto.

Spantree ports 2/1-4 fast start disabled.

Port(s) 2/1 channel mode set to auto.

Port(s) 2/2 channel mode set to auto.

Port(s) 2/3 channel mode set to auto.

Port(s) 2/4 channel mode set to auto.

console> (enable) 

Related Commands

set port host

clear port qos cos

Use the clear port qos cos command to return the values set by the set port qos command to the default values for all specified ports.

clear port qos mod/ports... cos

Syntax Description

mod/ports...

Number of the module and ports.

Defaults

The default CoS for a port is 0.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches.

Examples

This example shows how to return the values set by the set port qos command to the default values for module 2, port 1:

Console> (enable) clear port qos 2/1 cos

Port 2/1 qos cos setting cleared.

Console> (enable) 

Related Commands

set port qos
show port qos

clear port security

Use the clear port security command to clear all MAC addresses or a specific MAC address from the list of secure MAC addresses on a port.

clear port security mod_num/port_num {mac_addr | all}

Syntax Description

mod_num/ port_num	(Optional) Number of the module and the ports on the module.
mac_addr	Specific MAC address to be deleted.
all	Keyword that removes all MAC addresses.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to remove a specific MAC address from a port's list of secure addresses:

Console> (enable) clear port security 4/1 00-11-22-33-44-55

00-11-22-33-44-55 cleared from secure address list list for port 4/1.

Console> (enable) 

Related Commands

set port security
show port security

clear qos config

Use the clear qos config command to return the values set by the set qos command to the default values and deletes the CoS-to-MAC address mappings.

clear qos config

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches, Catalyst 4000 family switches, and the Catalyst 2948G and 2980G switch.

Examples

This example shows how to return the values set by the set qos command to the default values and delete the CoS assigned to MAC addresses:

Console> (enable) clear qos config

This command will disable QoS and take values back to factory default.

Do you want to continue (y/n) [n]? y

QoS config cleared.

Console> (enable) 

Related Commands

set qos
show qos info

clear qos defaultcos

Use the clear qos defaultcos command to restore the default CoS value for the entire switch.

clear qos defaultcos

Syntax Description

This command has no arguments or keywords.

Defaults

The default CoS for the entire switch is CoS equals 0.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 4000 family switches and the Catalyst 2948G and 2980G switch.

Examples

This example shows how to restore the default CoS value for the entire switch:

Console> (enable) clear qos defaultcos

qos defaultcos setting cleared.

Console> (enable)

Related Commands

set qos
show qos info

clear qos ip-filter

Use the clear qos ip-filter command to delete entries from the ACE list.

clear qos ip-filter {ACE# | all}

Syntax Description

ACE#	Number of the current position in the ACE list.
all	Keyword that specifies all the entries in the ACE list.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported only on Catalyst 5000 family switches with Supervisor Engine II G or III G, or Supervisor Engine III or III F with the NFFC II.

Examples

This example shows how to remove a specific entry from the ACE list:

Console> (enable) clear qos ip-filter 3

qos ip-filter 3 is cleared.

Console>(enable) 

This example shows how to remove all entries from the ACE list:

Console>(enable) clear qos ip all

qos ip-filter are all cleared.

Console>(enable) 

Related Commands

set qos ip-filter
show qos ip

clear qos mac-cos

Use the clear qos mac-cos command to clear the values set by the set qos mac-cos command.

clear qos mac-cos dest_mac [vlan]

clear qos mac-cos all

Syntax Description

dest_mac	Destination host MAC address.
vlan	(Optional) Number of the VLAN.
all	Keyword that specifies to clear CoS values for all MAC/VLAN pairs.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported only on Catalyst 5000 family switches with Supervisor Engine II G or III G, or Supervisor Engine III or III F with the NFFC II.

If the vlan number is not entered, all entries for the MAC address are cleared.

Examples

This example shows how to clear the values set by the set qos mac-cos command and return to the default values for all MAC address and VLAN pairs:

Console> (enable) clear qos mac-cos all

All CoS to Mac/Vlan entries are cleared.

Console> (enable) 

This example shows how to clear the values set by the set qos mac-cos command and return to the default values for a specific MAC address:

Console> (enable) clear qos mac-cos 1-2-3-4-5-6 1

CoS to Mac/Vlan entry for mac 01-02-03-04-05-06 vlan 1 is cleared.

Console> (enable) 

Related Commands

set qos mac-cos
show qos mac-cos

clear qos map

Use the clear qos map command to return the CoS-to-transmit queue and drop threshold values to their default values.

clear qos map port_type

Syntax Description

port_type

Port type. Valid port types are 1q4t and 2q1t.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches, Catalyst 4000 family switches, and the 2948G and 29890G switch.

On the Catalyst 5000 family switches, this command is supported only with Supervisor Engine II G or III G, or Supervisor Engine III or III F with the NFFC II.

Examples

This example shows how to return the CoS-to-transmit queue and drop threshold mappings to the default values on 1q4t ports:

Console> (enable) clear qos map 1q4t 

Qos map setting cleared.

Console> (enable) 

Related Commands

set qos map
show qos info

clear qos router-mac

Use the clear qos router-mac command to remove entries from the list of router MAC address-to-VLAN mappings on which to perform ACE-based classification.

clear qos router-mac mac_address vlan

clear qos router-mac all

Syntax Description

mac_addr	MAC address to remove from the list of router MAC address-to-VLAN mappings. This address can be entered in canonical format (00-11-33-44-55) or in noncanonical format (00:11:22:33:44:55).
vlan	VLAN number mapped to the specified router MAC address. Valid values are 1 to 1005.
all	Keyword that removes all entries from the list of router MAC address-to-VLAN mappings.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported only on Catalyst 5000 family switches with Supervisor Engine II G or III G, or Supervisor Engine III or III F with the NFFC II.

Examples

This example shows how to remove a specific entry from the list of router MAC address-to-VLAN mappings:

Console> (enable) clear qos router-mac 00-40-0b-30-03-48 2

QoS Router MAC/Vlan(s) cleared.

Console> (enable) 

Related Commands

set qos router-mac
show qos info

clear radius key

Use the clear radius key command to clear all or one of the RADIUS shared keys from the RADIUS shared key table.

clear radius key

Syntax Description

key	Keyword that specifies the RADIUS shared key.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear the RADIUS key:

Console> (enable) clear radius key

Radius server key cleared.

Console> (enable) 

Related Commands

show radius
set radius key

clear radius server

Use the clear radius server command to clear all or one of the RADIUS servers from the RADIUS server table.

clear radius server all

clear radius server ipaddr

Syntax Description

server	Keyword that specifies specific RADIUS servers.
all	Keyword that specifies all RADIUS servers.
ipaddr	Number of the IP address or IP alias in dotted decimal notation, for example, 101.102.103.104.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear a specific RADIUS server from the RADIUS server table:

Console> (enable) clear radius server 192.168.255.255

192.168.255.255 cleared from radius server table.

Console> (enable) 

Related Commands

show radius
set radius server

clear rgmp statistics

Use the clear rgmp statistics command to clear RGMP statistics information for all VLANs.

clear rgmp statistics

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches.

Examples

This example shows how to clear the RGMP statistics on the switch:

Console> (enable) clear rgmp statistics 

RGMP statistics cleared.

Console> (enable)

Related Commands

show rgmp statistics
set rgmp

clear snmp access

Use the clear snmp access command to remove the access rights of an SNMP group with a specific security model and security level.

clear snmp access {-hex} {groupname} {security-model {v1 | v2c}}

clear snmp access {security-model v3 {noauthentication | authentication | privacy}}

Syntax Description

-hex	Keyword that displays the groupname as a hexadecimal format.
groupname	SNMP access table name.
security-model v1| v2c	Keywords that specify the security model v1 or v2c.
security-model v3	Keywords to specify security model v3.
noauthentication	Security model is not set to use authentication protocol.
authentication	Indicates the type of authentication protocol.
privacy	Messages sent on behalf of the user is protected from disclosure.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you use special characters for groupname (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

Examples

This example shows how to clear SNMP access for a group:

Console> (enable) clear snmp access cisco-group security-model v3 authentication

Cleared snmp access cisco-group version v3 level authentication.

Console> (enable) 

Related Commands

set snmp access
show snmp
clear config

clear snmp group

Use the clear snmp group command to clear the SNMP user from an SNMP group.

clear snmp group {-hex} {groupname} user {-hex} {username}
    {security-model {v1 | v2 | v3}}

Syntax Description

groupname	Name of the SNMP group that defines an access control.
user	Keyword that specifies the SNMP group user name.
-hex	Keyword that displays the groupname and username as a hexadecimal format.
username	Name of the SNMP user.
security model v1 | v2 | v3	Keywords that specifies security model v1, v2c, or v3.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you use special characters for groupname or username (nonprintable delimiters for these parameters), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

Examples

This example shows how to clear the SNMP group from the vacmAccessTable:

Console> (enable) clear snmp group cisco-group user joe security-model v3

Cleared snmp group cisco-group user joe version v3.

Console> (enable)

Related Commands

set snmp group
show snmp

clear snmp notify

Use the clear snmp notify command to clear the SNMP notifyname in the SNMP Notify Table.

clear snmp notify {-hex} {notifyname}

Syntax Description

-hex	Keyword that displays the notifyname as a hexadecimal format.
notifyname	A unique identifier to index the snmpNotifyTable.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you use special characters for notifyname (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

Examples

This example shows how to clear an SNMP notifyname from the snmpNotifyTable:

Console> (enable) clear snmp notify joe

Cleared SNMP notify table joe.

Console> (enable) 

Related Commands

set snmp notify
show snmp

clear snmp targetaddr

Use the clear snmp targetaddr command to clear the SNMP target address entry in the TargetAddressTable.

clear snmp targetaddr {-hex} {addrname}

Syntax Description

-hex	Keyword that displays the addrname as a hexadecimal format.
addrname	An arbitrary but unique name of the target agent; the maximum length is 32 bytes.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you use special characters for addrname (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

Examples

This example shows how to clear an SNMP target address entry in the snmpTargetAddressTable:

Console> (enable) clear snmp targetaddr joe

Cleared SNMP targetaddr joe.

Console> (enable)

Related Commands

set snmp targetaddr
show snmp

clear snmp targetparams

Use the clear snmp targetparams command to clear the SNMP target parameters used in the snmpTargetParamsTable.

clear snmp targetparams {-hex} {paramsname}

Syntax Description

-hex	Keyword to display the paramsname as a hexadecimal format.
paramsname	Name of the target parameter in the snmpTargetParamsTable; the maximum length is 32 bytes.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you use special characters for paramsname (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

Examples

This example shows how to clear the SNMP target parameters in the snmpTargetParamsTable:

Console> (enable) clear snmp targetparams joe

Cleared SNMP targetparams table joe.

Console> (enable) 

Related Commands

set snmp targetparams
show snmp

clear snmp trap

Use the clear snmp trap command to clear an entry from the SNMP trap receiver table.

clear snmp trap {rcvr_addr | all}

Syntax Description

rcvr_addr	IP address or IP alias of the trap receiver (the SNMP management station) to clear; in dotted decimal notation, for example, 101.102.103.104.
all	Keyword that specifies every entry in the SNMP trap receiver table.

Defaults

The default configuration has no entries in the SNMP trap receiver table.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear an entry from the SNMP trap receiver table:

Console> (enable) clear snmp trap 192.168.255.255

SNMP trap receiver deleted.

Console> (enable)

Related Commands

set snmp trap
show port counters
test snmp trap

clear snmp user

Use the clear snmp user command to remove an SNMP user.

clear snmp user {-hex} {username} [remote {engineid}]

Syntax Description

-hex	Keyword that displays the username as a hexadecimal format.
username	Name of the user on the host that connects to the agent.
remote engineid	(Optional) Keyword and variable that specifies the username on a remote SNMP engine.

Defaults

If a remote engine ID is not provided, the default local SNMP engine ID is used.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you use special characters for username (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

Examples

This example shows how to remove a user from an SNMP group:

Console> (enable) clear snmp user joe

Cleared SNMP user joe.

Console> (enable) 

This example shows how to remove a user on a remote SNMP engine:

Console> (enable) clear snmp user joe remote 00:00:00:09:00:d0:00:4c:18:00

Cleared SNMP user.

Console> (enable) 

Related Commands

set snmp user
show snmp

clear snmp view

Use the clear snmp view command to remove the MIB viewname from the vacmViewTreeFamilyTable.

clear snmp view {-hex} {viewname} {subtree}

Syntax Description

-hex	Keyword that displays the viewname as a hexadecimal format.
viewname	Name of a MIB view.
subtree	Name of the subtree.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you use special characters for viewname (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

A MIB subtree used in conjunction with a mask defines a view subtree that can be in OID format or a text name mapped to a valid OID.

Examples

This example shows how to clear the SNMP MIB viewname:

Console> (enable) clear snmp view myview 1.1.3

Cleared snmp view myview with subtree 1.1.3

Console> (enable)

Related Commands

set snmp view
show snmp

clear spantree portvlancost

Use the clear spantree portvlancost command to restore the default spanning-tree port VLAN cost on a port.

clear spantree portvlancost mod_num/port_num preferred_vlans

Syntax Description

mod_num	Number of the module.
port_num	Number of the port.
preferred_vlans	List of VLANs for which to restore the default spanning-tree port VLAN cost. Valid values are 1 to 1005.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to restore the default spanning-tree port VLAN cost for VLANs 1 through 10 on port 2/10:

Console> (enable) clear spantree portvlancost 2/10 1-10

Port 2/10 VLANs 11-21 have path cost 6

Port 2/10 VLANs 1-10,22-1000 have path cost 10.

Console> (enable)

Related Commands

set spantree portfast
show spantree statistics

clear spantree portvlanpri

Use the clear spantree portvlanpri command to restore the default spanning-tree port VLAN priority on a port.

clear spantree portvlanpri mod_num/port_num vlans

clear spantree portvlanpri trcrf | trbrf

Syntax Description

mod_num	Number of the module.
port_num	Number of the port on the module.
vlans	List of VLANs for which to restore the default spanning-tree port VLAN priority. Valid values are 1 to 1005.
trcrf	Keyword that specifies the TrCRF for which to clear the spanning-tree port VLAN priority.
trbrf	Keyword that specifies the TrBRF for which to clear the spanning-tree port VLAN priority.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to restore the default spanning-tree port VLAN priority for VLANs 23 to 40 on port 1/2:

Console> (enable) clear spantree portvlanpri 1/2 23-40 
Port 1/2 vlans 3,6-20,23-1000 using portpri 32 
Port 1/2 vlans 1-2,4-5,21-22 using portpri 30

Console> (enable)

Related Commands

set spantree portvlanpri
show spantree

clear spantree root

Use the clear spantree root command to restore the spanning-tree bridge priority, hello time, maxage, and forward delay on the switch to their default values.

clear spantree root vlans

Syntax Description

vlans

List of the VLANs for which to restore the spanning-tree default settings. Valid values are 1 to 1005.

Defaults

The default bridge configurations are:

switch priority	32768
forward delay	15 seconds
hello time	2 seconds
maxage	20 seconds

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to restore the spanning-tree bridge priority, hello time, maxage, and forward delay for VLANs 1 through 20 to their default values:

Console>(enable) clear spantree root 1-20 

VLANs 1-20 bridge priority set to 32678.

VLANs 1-20 bridge hello time set to 2 seconds.

VLANs 1-20 bridge max aging time set to 20 seconds.

VLANs 1-20 bridge forward delay set to 15 seconds.

Related Commands

set spantree root
show spantree

clear spantree statistics

Use the clear spantree statistics command to clear the spanning-tree statistics on a specified port or VLAN.

clear spantree statistics mod_num/port_num

clear spantree statistics vlan

Syntax Description

mod_num	Number of the module.
port_num	Number of the port on the module.
vlan	List of the VLAN numbers to clear.

Defaults

This command has no defaults.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear the spanning-tree statistics for VLAN 1:

Console>(enable) clear spantree statistics 1

Cleared all VLAN counters for VLAN 1

Statistics cleared for vlans 1

Console> (enable)

Related Commands

show spantree statistics

clear spantree uplinkfast

Use the clear spantree uplinkfast command to disable UplinkFast and return the spanning-tree bridge priority, port priorities, and port costs to their default values.

clear spantree uplinkfast

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no defaults.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command changes spanning-tree port priorities and port costs, which might affect VLAN load-balancing configurations.

Examples

This example shows how to turn off the UplinkFast feature and return the spanning-tree bridge priority, port priorities, and port costs to their default values:

Console>(enable) clear spantree uplinkfast

This command will cause all portcosts, portvlancosts, and the 

bridge priority on all vlans to be set to default.

Do you want to continue (y/n) [n]? y

VLANs 1-1005 bridge priority set to 32768.

The port cost of all bridge ports set to default value.

The portvlancost of all bridge ports set to default value.

uplinkfast disabled for bridge.

Console> (enable)

Related Commands

set spantree uplinkfast
show spantree uplinkfast

clear station

Use the clear station command to remove a station from the Token Ring network.

clear station mod_num/port_num mac_addr

Syntax Description

mod_num	Number of the module.
port_num	Number of the port on the module.
mac_addr	MAC address of the station that you want to remove. Enter this address in non-canonical (00:11:22:33:44:55) format.

Defaults

The command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches.

Use this command with extreme caution, it issues a Remove Station MAC frame to a specific station and removes that station from the Token Ring network.

Examples

This example shows how to remove the station with the MAC address 00:40:0b:01:bc:65 from
port 2 of module 3:

Console> (enable) clear station 3/2 00:40:0b:01:bc:65

Mac Address 00:40:0b:01:bc:65 cleared.

Console> (enable)

Related Commands

clear station counters
set station softerror
show station softerror config
show station softerror counters

clear station counters

Use the clear station counters command to reset the soft error statistics.

clear station counters mod_num[/port_num]

Syntax Description

mod_num	Number of the module.
port_num	(Optional) Number of the port on the module.

Defaults

The command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches.

Examples

This example shows how to reset the soft error statistics collected for stations on port 10 of module 3:

Console> (enable) clear station counters 3/10

Port 3/10 station counters cleared.

Console> (enable)

Related Commands

clear station
set station softerror
show station softerror counters

clear tacacs key

Use the clear tacacs key command to remove the TACACS+ authentication and encryption server key.

clear tacacs key

Syntax Description

This command has no arguments or keywords.

Defaults

The default key value is null.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear the TACACS+ server key used for authentication and encryption:

Console> (enable) clear tacacs key

TACACS server key cleared.

Console> (enable) 

Related Commands

set tacacs key
show tacacs

clear tacacs server

Use the clear tacacs server command to remove a host from the list of TACACS+ servers.

clear tacacs server {ip_addr | all}

Syntax Description

ip_addr	IP address of the server to be removed from the list of TACACS+ servers.
all	Keyword that specifies removal of all hosts from the list of TACACS+ servers.

Defaults

There is no default setting for this command.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to remove a server from the list of TACACS+ servers:

Console> (enable) clear tacacs server 192.168.255.255

192.168.255.255 cleared from TACACS table

Console> (enable)

Related Commands

show tacacs

clear timezone

Use the clear timezone command to return the time zone to its default, UTC.

clear timezone

Syntax Description

This command has no arguments or keywords.

Defaults

The default time zone is UTC.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

The clear timezone command functions only when NTP is enabled. If you set the time manually and NTP is disabled, the clear timezone command has no effect.

Examples

This example shows how to clear the time zone:

Console> (enable) clear timezone

Timezone name and offset cleared.

Console> (enable)

Related Commands

set timezone

clear top

Use the clear top command to terminate running TopN report processes.

clear top {all | report_num}

Syntax Description

all	Keyword that terminates all nonpending TopN results.
report_num	TopN report number to terminate; valid values are 1 to 5.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

The clear top all command will not kill any pending TopN reports. Only reports with a done status are killed.

You can terminate TopN processes without the background option by pressing Ctrl-C in the same Telnet/console session, or by entering the clear top [report_num] command from a separate Telnet/console session. Use the show top background command to find out if the background option is used.

The prompt is not displayed before the TopN report is completely displayed. Other commands will be blocked until the report has been displayed.

Examples

This example shows how to stop the TopN process 1 from a console session:

Console> (enable) clear top 1

Console> (enable) %MGMT-5-TOPN_TERMINATE:Report 1 terminated by Console//

Console> (enable)

This example shows how to stop all nonpending TopN report processes:

Console> (enable) clear top all

Console> (enable) %MGMT-5-TOPN_TERMINATE:Report 1 terminated by Console//

%MGMT-5-TOPN_TERMINATE:Report 2 terminated by Console//

%MGMT-5-TOPN_TERMINATE:Report 3terminated by Console//

Console> (enable) 

This example shows how to stop the TopN 4 process from a Telnet session:

Console> (enable) clear top 1

Console> (enable) %MGMT-5-TOPN_TERMINATE:Report 1 terminated by telnet/172.20.52.124//

Console> (enable)

Related Commands

show top
show top report

clear trunk

Use the clear trunk command to restore a trunk port to its default trunk type and mode or to clear specific VLANs from the allowed VLAN list for a trunk port.

clear trunk mod/ports... [vlans]

Syntax Description

mod	Number of the module.
ports...	Number of the ports on the module.
vlans	(Optional) One or more VLANs to remove from the allowed VLAN list for the trunk port; valid values are 2 to 1005.

Defaults

If you do not specify any VLANs, this command sets the mode to auto for ISL and IEEE 802.1Q trunk ports. For more information about auto and off modes, see the set trunk command.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you specify VLANs, those VLANs are removed from the list of VLANs allowed on the trunk. Traffic for the removed VLANs is not forwarded over the trunk port.

Default VLANs cannot be cleared from the allowed VLAN list on the trunk.

To add VLANs that you have removed, use the set trunk mod_num/port_num vlan_range command.

Examples

This example shows how to clear VLANs 200 to 500 from the  trunk port on port 2 of module 1:

Console> (enable) clear trunk 1/2 200-500

Removing Vlan(s) 200-500 from allowed list.

Port 1/2 allowed vlans modified to 1-199,501-1000.

Console> (enable)

This example shows how to clear the  trunk on port 2 of module 1:

Console> (enable) clear trunk 1/2

Port(s) 1/2 trunk mode set to auto.

Port(s) 1/2 trunk type set to isl.

Console> (enable)

Related Commands

set trunk
show trunk

clear vlan

Use the clear vlan command to delete an existing VLAN from a management domain.

clear vlan vlan_num

Syntax Description

vlan_num

Number of the VLAN; valid value is 2 to 1000.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Follow these guidelines for deleting VLANs:

•When you delete an Ethernet VLAN in VTP server mode, the VLAN is removed from all switches in the same VTP domain.

•When you delete a VLAN in VTP transparent mode, the VLAN is deleted only on the current switch.

•To delete a Token Ring TrBRF VLAN, you must first reassign its child TrCRFs to another parent TrBRF, or delete the child TrCRFs.

---

Caution When you clear a VLAN, all ports assigned to that VLAN become inactive. However, the VLAN port assignments are retained until you move the ports to another VLAN. If the cleared VLAN is reactivated, all ports still configured on that VLAN are also reactivated. A warning is displayed if you clear a VLAN that exists in the mapping table.

---

Examples

This example shows how to clear an existing VLAN (VLAN 4) from a management domain:

Console> (enable) clear vlan 4 
This command will deactivate all ports on vlan 4 
in the entire management domain 
Do you want to continue(y/n) [n]? y 
VLAN 4 deleted

Console> (enable) 

Related Commands

set vlan
show vlan

clear vlan mapping

Use the clear vlan mapping command to delete existing 802.1Q VLAN to ISL VLAN-mapped pairs.

clear vlan mapping dot1q {1q_vlan_num | all}

Syntax Description

dot1q	Keyword that specifies the 802.1Q VLAN.
1q_vlan_num	Number identifiying the 802.1Q VLAN for which to remove the mapping.
all	Keyword that specifies to clear the mapping table of all entries.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear an existing mapped 802.1Q VLAN (VLAN 1044) from the
mapping table:

Console> (enable) clear vlan mapping dot1q 1044

Vlan Mapping 1044 Deleted.

Console> (enable) 

This example shows how to clear all mapped 802.1Q VLANs from the mapping table:

Console> (enable) clear vlan mapping dot1q all

All Vlan Mapping Deleted.

Console> (enable) 

Related Commands

set vlan mapping
show vlan mapping

clear vmps server

Use the clear vmps server command to delete a VMPS server from the VMPS server table.

clear vmps server ip_addr

Syntax Description

ip_addr

IP address of the VMPS server to be deleted.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the Catalyst 5000 family switches and the Catalyst 2926G series switches.

Examples

This example shows how to clear a VMPS server from the VMPS table:

Console> (enable) clear vmps server 192.168.255.255

VMPS domain server 192.168.255.255 cleared from VMPS table.

Console> (enable)

This example shows the results of trying to clear a nonexistent VMPS server from the VMPS table:

Console> (enable) clear vmps server 192.168.255.255

VMPS domain server 192.168.255.255 not in VMPS table.

Console> (enable)

Related Commands

reconfirm vmps

clear vmps statistics

Use the clear vmps statistics command to delete existing VMPS statistics.

clear vmps statistics

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default setting.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to delete existing VMPS statistics:

Console> (enable) clear vmps statistics

VMPS and dynamic vlan statistics cleared.

Console> (enable)

Related Commands

show vmps statistics

clear vtp pruneeligible

Use the clear vtp pruneeligible command to specify which VLANs in the VTP domain are ineligible for pruning.

clear vtp pruneeligible vlan_num

Syntax Description

vlan_num

Number of VLANs to make ineligible for pruning; valid values are 1 to 1005.

Defaults

By default, VLANs 2 to 1000 are eligible for pruning.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

VTP pruning prevents traffic in each pruning-eligible VLAN from being transmitted on a VLAN trunk if no stations belonging to that VLAN are located across that trunk. Use the set vtp command to enable VTP pruning.

Use the set vtp pruneeligible command to make the VLANs eligible for pruning again.

Examples

This example shows how to make VLANs 200 to 500 ineligible for pruning:

Console> (enable) clear vtp pruneeligible 200-500

Vlans 1,200-500,1001-1005 will not be pruned on this device.

VTP domain Company modified.

Console> (enable)

Related Commands

set vtp
set vtp pruneeligible
show vtp statistics