cc/td/doc/product/lan/cat6000/sw_5_4
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Table of Contents

cd
 clear alias
 clear arp
 clear banner motd
 clear boot auto-config
 clear boot system
 clear cam
 clear channel statistics
 clear config
 clear config pvlan
 clear cops
 clear counters
 clear gmrp statistics
 clear gvrp statistics
 clear igmp statistics
 clear ip alias
 clear ip dns domain
 clear ip dns server
 clear ip permit
 clear ip route
 clear kerberos clients mandatory
 clear kerberos credentials forward
 clear kerberos creds
 clear kerberos realm
 clear kerberos server
 clear key config-key
 clear lda

cd

Use the cd command to set the default Flash device for the system.

cd [[m/]device:]

Syntax Description

m/

(Optional) Module number of the supervisor engine containing the Flash device.

device:

(Optional) Valid devices include bootflash and slot0.

Default

The default Flash device is bootflash.

Command Type

Switch command.

Command Mode

Normal.

Usage Guidelines

A colon (:) is required after the specified device.

For those commands where device is an option, the device set by cd is used if the default device is not specified.

Example

This example shows how to set the system default Flash device to bootflash:

Console> cd bootflash:
Default flash device set to bootflash.
Console>
Related Command

pwd

clear alias

Use the clear alias command to clear the shorthand versions of commands.

clear alias {name | all}

Syntax Description

name

Alternate identifier of the command.

all

Keyword that clears every alternate identifier previously created.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Examples

This example shows how to erase the arpdel alias:

Console> (enable) clear alias arpdel
Command alias deleted.
Console> (enable)

This example shows how to erase all the aliases:

Console> (enable) clear alias all
Command alias table cleared. (1)
Console> (enable)

(1) indicates the number of command aliases cleared.

Related Commands

set alias
show alias

clear arp

Use the clear arp command to delete a specific entry or all entries from the ARP table.

clear arp [all | dynamic | permanent | static] {ip_addr}

Syntax Description

all

(Optional) Keyword to clear all ARP entries.

dynamic

(Optional) Keyword to clear all dynamic ARP entries.

permanent

(Optional) Keyword to clear all permanent ARP entries.

static

(Optional) Keyword to clear all static ARP entries.

ip_addr

IP address to clear from the ARP table.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Examples

This example shows how to remove IP address 198.133.219.209 from the ARP table:

Console> (enable) clear arp 198.133.219.209
ARP entry deleted.
Console> (enable)

This example shows how to remove all entries from the ARP table:

Console> (enable) clear arp all
ARP table cleared. (1)
Console> (enable)

(1) indicates the number of entries cleared.

This example shows how to remove all dynamically learned ARP entries:

Console> (enable) clear arp dynamic
Unknown host
Dynamic ARP entries cleared. (3)                 
Console> (enable)

This example shows how to clear all permanently entered ARP entries:

Console> (enable) clear arp permanent
Unknown host
Permanent ARP entries cleared.(5)
Console> (enable)
Related Commands

set arp
show arp

clear banner motd

Use the clear banner motd command to clear the message-of-the-day banner.

clear banner motd

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to clear the message-of-the-day banner:

Console> (enable) clear banner motd
MOTD banner cleared
Console> (enable)
Related Command

set banner motd

clear boot auto-config

Use the clear boot auto-config command to clear the contents of the CONFIG_FILE environment variable used to specify the configuration files used during bootup.

clear boot auto-config [mod_num]

Syntax Description

mod_num

(Optional) Module number of the supervisor engine containing the Flash device.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to clear the auto-config file:

Console> (enable) clear boot auto-config
CONFIG_FILE variable =
Console> (enable)
Related Commands

set boot auto-config
show boot

clear boot system

Use the clear boot system command to clear the contents of the BOOT environment variable and the configuration register setting.

clear boot system all [mod_num]
clear boot system flash device:[filename] [mod_num]

Syntax Description

all

Keyword to clear the whole BOOT environment variable.

mod_num

(Optional) Module number of the supervisor engine containing the Flash device.

flash

(Optional) Keyword to clear the Flash device.

device:

Name of the Flash device.

filename

(Optional) Filename of the Flash device.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Examples

This example shows how to clear the whole BOOT environment variable:

Console> (enable) clear boot system all
BOOT variable = 
Console> (enable)

This example shows how to clear a specific device:

Console> (enable) clear boot system flash bootflash:cat6000-sup.5-4-1.CSX.bin
BOOT variable = 
Console> (enable)
Related Commands

set boot system flash
show boot

clear cam

Use the clear cam command to delete a specific entry or all entries from the CAM table.

clear cam {mac_addr | dynamic | static | permanent} [vlan]

Syntax Description

mac_addr

One or more MAC addresses.

dynamic

Keyword to clear the dynamic CAM entries from the CAM table.

static

Keyword to clear the static CAM entries from the CAM table.

permanent

Keyword to clear the permanent CAM entries from the CAM table.

vlan

(Optional) Number of the VLAN; valid values are 1 to 1005.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Examples

This example shows how to remove MAC address 00-40-0b-a0-03-fa from the CAM table:

Console> (enable) clear cam 00-40-0b-a0-03-fa
CAM table entry cleared.
Console> (enable)

This example shows how to clear dynamic entries from the CAM table:

Console> (enable) clear cam dynamic
Dynamic CAM entries cleared.
Console> (enable)
Related Commands

set cam
show cam

clear channel statistics

Use the clear channel statistics command to clear PAgP statistical information.

clear channel statistics

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to clear PAgP statistical information:

Console> (enable) clear channel statistics
PAgP statistics cleared.
Console> (enable)
Related Command

show channel

clear config

Use the clear config command to clear the system or module configuration information stored in NVRAM.

clear config {mod_num | rmon | all | snmp | acl {nvram}}

Syntax Description

mod_num

Number of the module.

rmon

Keyword to clear all RMON configurations, including the historyControlTable, the alarmTable, the eventTable, and the ringStation ControlTable.

all

Keyword to clear all module and system configuration information, including the IP address.

snmp

Keyword to clear all SNMP configurations.

acl nvram

Keywords to clear all ACL configurations.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Usage Guideline

Before using the clear config all command, save a backup of the configuration using the copy command.

Examples

This example shows how to delete the configuration information in NVRAM on module 2:

Console> (enable) clear config 2
This command will clear module 2 configuration.
Do you want to continue (y/n) [n]? y
..............................
Module 2 configuration cleared.
Console> (enable)

This example shows how to delete the configuration information stored in NVRAM on module 1 (the supervisor engine):

Console> (enable) clear config 1
This command will clear module 1 configuration.
Do you want to continue (y/n) [n]? y
......
Module 1 configuration cleared.
host%

This example shows how to delete all the configuration information for the Catalyst 6000 family switches:

Console> (enable) clear config all
This command will clear all configuration in NVRAM.
Do you want to continue (y/n) [n]? y
...........................................
Connection closed by foreign host
host%

This example shows how to delete all the SNMP configuration information for the Catalyst 6000 family switches:

Console> (enable) clear config snmp
This command will clear SNMP configuration in NVRAM.
Do you want to continue (y/n) [n]? y
...........................................
Connection closed by foreign host
host%

This example shows how to delete all ACL configuration information from NVRAM:

Console> (enable) clear config acl nvram
ACL configuration has been deleted from NVRAM.
Warning: Use the copy commands to save the ACL configuration to a file and
the 'set boot config-register auto-config' commands to configure the
auto-config feature.
Console> (enable)
Related Commands

configure
show config

clear config pvlan

Use the clear config pvlan command to clear all private VLAN configurations in the system including port mappings.

clear config pvlan

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to clear all private VLAN configurations in the system:

Console> (enable) clear config pvlan
This command will clear all private VLAN configurations.
Do you want to continue (y/n) [n]? y
VLAN 15 deleted
VLAN 16 deleted
VLAN 17 deleted
VLAN 18 deleted
Private VLAN configuration cleared.
Console> (enable)
Related Commands

set vlan
show vlan
set pvlan
set pvlan mapping
clear vlan
clear pvlan mapping
show pvlan
show pvlan mapping
configure
show config

clear cops

Use the clear cops commands to clear COPS configurations.

clear cops roles role1 [role2]...
clear cops all-roles
clear cops server all
clear cops server ipaddress [primary] [diff-serv | rsvp]
clear cops server ipaddress [diff-serv | rsvp]
clear cops domain-name

Syntax Description

roles role#

Keyword and variable to specify the roles to clear.

all-roles

Keyword to clear all roles.

server

Keyword to specify the COPS server.

all

Keyword to clear all servers.

ipaddress

Keyword and variable to specify the IP address or IP alias of the server.

primary

(Optional) Keyword to specify the primary server.

diff-serv

(Optional) Keyword to specify the differentiated services server table.

rsvp

(Optional) Keyword to specify the RSVP+ server table.

domain-name

Domain name of the server.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Usage Guideline

You can use the clear cops all-roles command to clean up all the roles from all the ports even if there are still roles applied to ports.

Examples

This example shows how to clear specific roles:

Console> (enable) clear cops roles backbone_port main_port
Roles cleared.
Console> (enable)

This example shows how to clear all roles:

Console> (enable) clear cops all-roles
All roles cleared.
Console> (enable)

This example shows how to clear all COPS servers:

Console> (enable) clear cops server all
All COPS servers cleared.
Console> (enable)

This example shows how to clear a specific COPS server:

Console> (enable) clear cops server my_server1
All COPS servers cleared.
Console> (enable)

This example shows how to clear the COPS domain name:

Console> (enable) clear cops domain-name
Domain name cleared.
Console> (enable)
Related Commands

show cops
set cops

clear counters

Use the clear counters command to clear MAC and port counters.

clear counters

Syntax Description

This command has no keywords or arguments.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to reset MAC and port counters to zero:

Console> (enable) clear counters
This command will reset all MAC and port counters reported in CLI and SNMP.
Do you want to continue (y/n) [n]? y
MAC and Port counters cleared.
Console> (enable)
Related Command

show port

clear gmrp statistics

Use the clear gmrp statistics command to clear all the GMRP statistics information from a specified VLAN or all VLANs.

clear gmrp statistics {vlan | all}

Syntax Description

vlan

Number of the VLAN.

all

Keyword to specify all VLANs.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Examples

This example shows how to clear GMRP statistical information from all VLANs:

Console> (enable) clear gmrp statistics
GMRP statistics cleared.
Console> (enable)

This example shows how to clear GMRP statistical information from VLAN 1:

Console> (enable) clear gmrp statistics 1
GMRP statistics cleared from VLAN 1.
Console> (enable)
Related Command

show gmrp statistics

clear gvrp statistics

Use the clear gvrp statistics command to clear all the GVRP statistics information.

clear gvrp statistics {mod/port | all}

Syntax Description

mod/port

Number of the module and port.

all

Keyword to specify all ports.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Examples

This example shows how to clear all GVRP statistical information:

Console> (enable) clear gvrp statistics all
GVRP statistics cleared for all ports.
Console> (enable)

This example shows how to clear GVRP statistical information for module 2, port 1:

Console> (enable) clear gvrp statistics 2/1
GVRP statistics cleared on port 2/1.
Console> (enable)
Related Commands

show gvrp configuration
set gvrp

clear igmp statistics

Use the clear igmp statistics command to clear IGMP snooping statistical information.

clear igmp statistics

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to clear IGMP statistical information:

Console> (enable) clear igmp statistics
IGMP statistics cleared.
Console> (enable)
Related Command

show igmp statistics

clear ip alias

Use the clear ip alias command to clear IP aliases set using the set ip alias command.

clear ip alias {name | all}

Syntax Description

name

IP address alias to delete.

all

Keyword to specify that all previously set IP address aliases be deleted.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to delete a previously defined IP alias named babar:

Console> (enable) clear ip alias babar
IP alias deleted.
Console> (enable)
Related Commands

set ip alias
show ip alias

clear ip dns domain

Use the clear ip dns domain command to clear the default DNS domain name.

clear ip dns domain

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to clear the default DNS domain name:

Console> (enable) clear ip dns domain
Default DNS domain name cleared.
Console> (enable)
Related Commands

set ip dns domain
show ip dns

clear ip dns server

Use the clear ip dns server command to remove a DNS server from the DNS server listing.

clear ip dns server {ip_addr | all}

Syntax Description

ip_addr

IP address of the DNS server you want to remove. An IP alias or a host name that can be resolved through DNS can also be used.

all

Keyword to specify all the IP addresses in the DNS server listing to be removed.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Examples

This example shows how to remove the DNS server at IP address 198.92.30.32 from the DNS server listing:

Console> (enable) clear ip dns server 198.92.30.32
198.92.30.32 cleared from DNS table.
Console> (enable)

This example shows how to remove all DNS servers from the DNS server listing:

Console> (enable) clear ip dns server all
All DNS servers cleared 
Console> (enable)
Related Commands

set ip dns server
show ip dns

clear ip permit

Use the clear ip permit command to remove a specified IP address and mask or all IP addresses and masks from the permit list.

clear ip permit {ip_addr} [mask] [snmp | telnet | all]

Syntax Description

ip_addr

IP address to be cleared. An IP alias or a host name that can be resolved through DNS can also be used.

mask

(Optional) Subnet mask of the specified IP address.

snmp

(Optional) Keyword to specify removal from the SNMP IP permit list.

telnet

(Optional) Keyword to specify removal from the Telnet IP permit list.

all

Keyword to specify all entries in the IP permit list to be removed.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Usage Guidelines

The clear ip permit all command clears the permit list but does not change the state of the IP permit feature. A warning is displayed if all IP addresses are cleared from the permit list, and the feature is enabled. If a mask other than the default (255.255.255.255) has been configured, you must provide both the address and mask to clear a specific entry.

If the snmp, telnet, or all keyword is not specified, the IP address is removed from both the SNMP and Telnet permit lists.

Examples

These examples show how to remove specified IP addresses:

Console> (enable) clear ip permit 172.100.101.102
172.100.101.102 cleared from IP permit list.
Console> (enable)
 
Console> (enable) clear ip permit 172.160.161.0 255.255.192.0 snmp
172.160.128.0 with mask 255.255.192.0 cleared from snmp permit list.
Console> (enable)
 
 
 
Console> (enable) clear ip permit 172.100.101.102 telnet
172.100.101.102 cleared from telnet permit list.
Console> (enable)
 
Console> (enable) clear ip permit all
IP permit list cleared.
WARNING
IP permit list is still enabled.
Console> (enable)
Related Commands

set ip permit
show ip permit
show port counters

clear ip route

Use the clear ip route command to delete IP routing table entries.

clear ip route destination gateway

Syntax Description

destination

IP address of the host or network. An IP alias or a host name that can be resolved through DNS can also be used.

gateway

IP address or alias of the gateway router.

Default

The default is destination. If the destination is not the active default gateway, the actual destination is the default.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to delete the route table entries using the clear ip route command:

Console> (enable) clear ip route 134.12.3.0 elvis
Route deleted.
Console> (enable)
Related Commands

set ip route
show ip route

clear kerberos clients mandatory

Use the clear kerberos clients mandatory command to disable mandatory Kerberos authentication for services on the network.

clear kerberos clients mandatory

Syntax Description

This command has no arguments or keywords.

Default

Kerberos clients are NOT set to mandatory.

Command Type

Switch command.

Command Mode

Privileged.

Usage Guideline

If you do not make Kerberos authentication mandatory and Kerberos authentication fails, the application attempts to authenticate users using the default method of authentication for that network service. For example, Telnet prompts for a password.

Example

This example shows how to clear mandatory Kerberos authentication:

Console> (enable) clear  kerberos clients mandatory 
Kerberos clients mandatory cleared
Console> (enable)
Related Commands

set kerberos clients mandatory
show kerberos

clear kerberos credentials forward

Use the clear kerberos credentials forward command to disable credentials forwarding.

clear kerberos credentials forward

Syntax Description

This command has no arguments or keywords.

Default

The default is forwarding is disabled.

Command Type

Switch command.

Command Mode

Privileged.

Usage Guideline

If you have a TGT and are authenticated to a Kerberized switch, you can use the TGT to authenticate to a host on the network. However, if forwarding is not enabled and you try to list credentials after authenticating to a host, the output will show no Kerberos credentials present.

Example

This example shows how to disable Kerberos credentials forwarding:

Console> (enable) clear kerberos credentials forward 
Kerberos credentials forwarding disabled
Console> (enable)
Related Commands

set kerberos credentials forward
set kerberos clients mandatory
show kerberos creds

clear kerberos creds

Use the clear kerberos creds command to delete all the Kerberos credentials.

clear kerberos creds

Syntax Description

This command has no arguments or keywords.

Default

The command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Usage Guideline

If you have a TGT and are authenticated to a Kerberized switch, you can use the TGT to authenticate to a host on the network.

Example

This example shows how to delete all Kerberos credentials:

Console> (enable) clear kerberos creds
Console> (enable)
Related Commands

set kerberos credentials forward
show kerberos

clear kerberos realm

Use the clear kerberos realm command to clear an entry that maps the name of a Kerberos realm to a DNS domain name or a host name.

clear kerberos realm {dns-domain | host} kerberos-realm

Syntax Description

dns-domain

DNS domain name to map to Kerberos realm.

host

IP address or name to map to Kerberos realm.

kerberos-realm

IP address or name of Kerberos realm.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Usage Guideline

You can map the name of the Kerberos realm to a DNS domain name or a host name with the set kerberos realm command.

Example

This example shows how to clear an entry mapping a kerberos-realm to a domain name:

Console> (enable) clear kerberos realm CISCO CISCO.COM
Kerberos DnsDomain-Realm entry CISCO - CISCO.COM deleted
Console> (enable)
Related Commands

set kerberos realm
set kerberos local-realm
show kerberos

clear kerberos server

Use the clear kerberos server command to clear a specified KDC entry.

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

Syntax Description

kerberos-realm

Name of the Kerberos realm.

hostname

Name of the host running the KDC.

ip-address

IP address of the host running the KDC.

port_num

(Optional) Number of the port on the module.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Usage Guideline

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

Example

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
show kerberos

clear key config-key

Use the clear key config-key command to remove a private DES key.

clear key config-key string

Syntax Description

string

DES key; should be no longer than 8 bytes.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Example

This example shows how to remove a private DES key:

kerberos> (enable)  clear key config-key abcd
Kerberos config key deleted
kerberos> (enable)
Related Command

set key config-key

clear lda

Use the clear lda commands to remove the ASLB MLS entries or MAC addresses from the switch.

clear lda mls
clear lda mls [destination ip_addr_spec] [source ip_addr_spec] [protocol protocol
src-port src_port dst-port dst_port]
clear lda vip {all | vip | vip tcp_port}
clear lda mac {all | router_mac_address}

Syntax Description

mls

(Optional) Keyword to remove configured LDs.

destination ip_addr_spec

(Optional) Full destination IP address or a subnet address in these formats: ip_addr, ip_addr/netmask, or ip_addr/maskbit.

source ip_addr_spec

(Optional) Full source IP address or a subnet address in these formats: ip_addr, ip_addr/netmask, or ip_addr/maskbit.

protocol protocol

(Optional) Keyword and variable to specify additional flow information (protocol family and protocol port pair) to be matched; valid values include tcp, udp, icmp, or a decimal number for other protocol families.

src-port port_number

(Optional) Keyword and variable to specify the number of the TCP/UDP source port (decimal). Used with dst-port to specify the port pair if the protocol is tcp or udp. 0 indicates "do not care."

dst-port port_number

(Optional) Keyword and variable to specify the number of the TCP/UDP destination port (decimal). Used with src-port to specify the port pair if the protocol is tcp or udp. 0 indicates "do not care."

vip all

Keywords to remove all VIP couples (set using the set lda command).

vip vip

Keyword and variable to specify a VIP.

vip vip tcp_port

Keyword and variables to specify a VIP and port couple.

mac all

Keywords to clear all ASLB router MAC addresses.

mac router_mac_ address

Keyword and variable to clear a specific router MAC address.

Default

This command has no default setting.

Command Type

Switch command.

Command Mode

Privileged.

Usage Guidelines

Entering the destination keyword specifies the entries matching the destination IP address specification, entering the source keyword specifies the entries matching the source IP address specification, and entering an ip_addr_spec can specify a full IP address or a subnet address. If you do not specify a keyword, it is treated as a wildcard, and all entries are displayed.

When entering the ip_addr_spec, use the full IP address or a subnet address in one of the following formats: ip_addr, ip_addr/netmask, or ip_addr/maskbit.

If you do not enter any keywords, the LD is removed from the switch and the LD configuration is removed from NVRAM.

If you do not enter any keywords with the clear lda mls command, all ASLB MLS entries are cleared.

Examples

This example shows how to clear the ASLB MLS entry at a specific destination address:

Console> (enable) clear lda mls destination 172.20.26.22
MLS IP entry cleared.
Console> (enable)

This example shows how to delete a VIP and port pair (VIP 10.0.0.8, port 8):

Console> (enable) clear lda vip 10.0.0.8 8
Successfully deleted vip/port pairs.
Console> (enable)

This example shows how to clear all ASLB router MAC addresses:

Console> (enable) clear lda mac all
Successfully cleared Router MAC address.
Console> (enable)

This example shows how to clear a specific ASLB router MAC address:

Console> (enable) clear lda mac 1-2-3-4-5-6
Successfully cleared Router MAC address.
Console> (enable)
Related Commands

commit lda
show lda
set lda


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Posted: Fri Mar 3 07:06:12 PST 2000
Copyright 1989 - 2000©Cisco Systems Inc.