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Use the cd command to set the default Flash device for the system.
cd [[m/]device:]
m/ | (Optional) Module number of the supervisor engine containing the Flash device. |
device: | (Optional) Valid devices include bootflash and slot0. |
The default Flash device is bootflash.
Switch command.
Normal.
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.
This example shows how to set the system default Flash device to bootflash:
Console> cd bootflash: Default flash device set to bootflash. Console>
Use the clear alias command to clear the shorthand versions of commands.
clear alias {name | all}
name | Alternate identifier of the command. |
all | Keyword that clears every alternate identifier previously created. |
This command has no default setting.
Switch command.
Privileged.
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.
Use the clear arp command to delete a specific entry or all entries from the ARP table.
clear arp {ip_addr | all}
ip_addr | Specific IP address in the ARP table to be cleared. An IP alias or host name that can be resolved through the DNS can be specified instead of an IP address. |
all | Keyword to clear every IP address in the ARP table. |
This command has no default setting.
Switch command.
Privileged.
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.
Use the clear banner motd command to clear the message-of-the-day banner.
clear banner motdThis command has no arguments or keywords.
This command has no default setting.
Switch command.
Privileged.
This example shows how to clear the message-of-the-day banner:
Console> (enable) clear banner motd MOTD banner cleared Console> (enable)
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]
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. |
This command has no default setting.
Switch command.
Privileged.
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.5-3-1.CSX.bin BOOT variable = Console> (enable)
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]
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. |
This command has no default setting.
Switch command.
Privileged.
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)
Use the clear channel statistics command to clear PAgP statistical information.
clear channel statisticsThis command has no arguments or keywords.
This command has no default setting.
Switch command.
Privileged.
This example shows how to clear PAgP statistical information:
Console> (enable) clear channel statistics PAgP statistics cleared. Console> (enable)
Use the clear config command to clear the system or module configuration information stored in NVRAM.
clear config {mod_num | rmon | all}
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 modules and system configuration information, including the IP address. |
This command has no default setting.
Switch command.
Privileged.
Before using the clear config all command, save a backup of the configuration.
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%
Use the clear cops commands to clear COPS configurations.
clear cops roles role1 [role2]...
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. |
This command has no default setting.
Switch command.
Privileged.
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.
This example shows how to clear specific roles:
Console> (enable)clear cops roles backbone_port main_portRoles cleared.Console> (enable)
This example shows how to clear all roles:
Console> (enable)clear cops all-rolesAll roles cleared.Console> (enable)
This example shows how to clear all COPS servers:
Console> (enable)clear cops server allAll COPS servers cleared.Console> (enable)
This example shows how to clear a specific COPS server:
Console> (enable)clear cops server my_server1All COPS servers cleared.Console> (enable)
This example shows how to clear the COPS domain name:
Console> (enable)clear cops domain-nameDomain name cleared.Console> (enable)
Use the clear counters command to clear MAC and port counters.
clear countersThis command has no keywords or arguments.
This command has no default setting.
Switch command.
Privileged.
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)
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}
vlan | Number of the VLAN. |
all | Keyword to specify all VLANs. |
This command has no default setting.
Switch command.
Privileged.
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)
Use the clear gvrp statistics command to clear all the GVRP statistics information.
clear gvrp statistics {mod/port | all}
mod/port | Number of the module and port. |
all | Keyword to specify all ports. |
This command has no default setting.
Switch command.
Privileged.
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)
show gvrp configuration
set gvrp
Use the clear igmp statistics command to clear IGMP snooping statistical information.
clear igmp statisticsThis command has no arguments or keywords.
This command has no default setting.
Switch command.
Privileged.
This example shows how to clear IGMP statistical information:
Console> (enable) clear igmp statistics IGMP statistics cleared. Console> (enable)
Use the clear ip alias command to clear IP aliases set using the set ip alias command.
clear ip alias {name | all}
name | IP address alias to delete. |
all | Keyword to specify that all previously set IP address aliases be deleted. |
This command has no default setting.
Switch command.
Privileged.
This example shows how to delete a previously defined IP alias named babar:
Console> (enable) clear ip alias babar IP alias deleted. Console> (enable)
Use the clear ip dns domain command to clear the default DNS domain name.
clear ip dns domainThis command has no arguments or keywords.
This command has no default setting.
Switch command.
Privileged.
This example shows how to clear the default DNS domain name:
Console> (enable) clear ip dns domain Default DNS domain name cleared. Console> (enable)
Use the clear ip dns server command to remove a DNS server from the DNS server listing.
clear ip dns server {ip_addr | all}
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. |
This command has no default setting.
Switch command.
Privileged.
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)
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 | all} [mask]
ip_addr | IP address to be cleared. An IP alias or a host name that can be resolved through DNS can also be used. |
all | Keyword to remove all entries in the IP permit list. |
mask | (Optional) Subnet mask of the specified IP address. |
This command has no default setting.
Switch command.
Privileged.
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.
These examples show how to use the clear ip permit command:
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 172.160.128.0 255.255.192.0 172.160.128.0 with mask 255.255.192.0 cleared from IP permit list. Console> (enable) Console> (enable) clear ip permit all IP permit list cleared. WARNING!! IP permit list is still enabled. Console> (enable)
set ip permit
show ip permit
show port counters
Use the clear ip route command to delete IP routing table entries.
clear ip route destination gateway
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. |
The default is destination. If the destination is not the active default gateway, the actual destination is the default.
Switch command.
Privileged.
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)
Use the clear lda commands to remove the ASLB MLS entries or MAC addresses from the switch.
clear lda mls
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 or 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 or 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. |
This command has no default setting.
Switch command.
Privileged.
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 or 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
This example shows how to clear the ASLB MLS entry at a specific destination address:
Console> (enable)clear lda mls destination 172.20.26.22MLS 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 8Successfully deleted vip/port pairs.Console> (enable)
This example shows how to clear all ASLB router MAC address:
Console> (enable)clear lda mac allSuccessfully cleared Router MAC address.Console> (enable)
This example shows how to clear a specific ASLB router MAC address:
Console> (enable)clear lda mac 1-2-3-4-5-6Successfully cleared Router MAC address.Console> (enable)
Use the clear log command to delete module or system error log entries.
clear log [mod_num]
mod_num | (Optional) Module number. |
This command has no default setting.
Switch command.
Privileged.
If you do not specify a module number, the system error log for the entire system is erased.
This example shows how to clear the system error log:
Console> (enable) clear log System error log cleared. Console> (enable)
Posted: Fri Dec 31 10:55:04 PST 1999
Copyright 1989-1999©Cisco Systems Inc.