Table Of Contents

clear mls exclude protocol

clear mls multicast statistics

clear mls nde flow

clear mls statistics

clear mls statistics entry

clear module password

clear multicast router

clear ntp server

show ntpclear ntp timezone

clear pbf

clear port broadcast

clear port cops

clear port host

clear port qos cos

clear port security

clear pvlan mapping

clear qos acl

clear qos config

clear qos cos-dscp-map

clear qos dscp-cos-map

clear qos ipprec-dscp-map

clear qos mac-cos

clear qos map

clear qos policed-dscp-map

clear qos policer

clear qos statistics

clear radius

clear rcp

clear rgmp statistics

clear security acl

clear security acl capture-ports

clear security acl log flow

clear security acl map

clear snmp access

clear snmp community

clear snmp group

clear snmp notify

clear snmp targetaddr

clear snmp targetparams

clear snmp trap

clear snmp user

clear snmp view

clear spantree portinstancecost

clear spantree portinstancepri

clear spantree portvlancost

clear spantree portvlanpri

clear spantree root

clear spantree statistics

clear spantree uplinkfast

clear tacacs key

clear tacacs server

clear timezone

clear top

clear trunk

clear vlan

clear vlan mapping

clear vmps rcp

clear vmps server

clear vmps statistics

clear vtp pruneeligible

clear mls exclude protocol

Use the clear mls exclude protocol command to remove a protocol port that has been been excluded from shortcutting using the set mls exclude protocol command.

clear mls exclude protocol tcp | udp | both port

Syntax Description

tcp	Keyword to specify a TCP port.
udp	Keyword to specify a UDP port.
both	Keyword to specify that the port be applied to both TCP and UDP traffic.
port	Number of the port.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to set TCP packets in a protocol port to be hardware switched:

Console> (enable) clear mls exclude protocol tcp 25

TCP packets with protocol port 25 will be MLS switched.

Console> (enable)

Related Commands

show mls exclude protocol
set mls exclude protocol

clear mls multicast statistics

Use the clear mls multicast statistics command to remove MLS multicast statistics maintained per the MSFC on the switch.

clear mls multicast statistics [mod]

Syntax Description

mod	(Optional) Number of the MSFC; valid values are 15 and 16.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you enter the clear mls multicast statistics command on a Catalyst 6000 family switch without MLS, this warning message is displayed:

MLS Multicast is not supported on feature card.

If you place the MFSC on a supervisor engine installed in slot 1, then the MFSC is recognized as module 15. If you install the supervisor engine in slot 2, the MFSC is recognized as module 16.

The mod option is not supported on switches configured with the Supervisor Engine 2 with Layer 3 Switching Engine II (PFC2).

Examples

This example shows how to clear MLS statistics on a switch configured with the Supervisor Engine 1 with Layer 3 Switching Engine WS-F6K-PFC (Policy Feature Card):

Console> (enable) clear mls multicast statistics

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

Console> (enable)

This example shows how to clear MLS statistics on a switch configured with the Supervisor Engine 2 with Layer 3 Switching Engine II (PFC2):

Console> (enable) clear mls multicast statistics

All statistics cleared.

Console> (enable)

Related Commands

show mls statistics

clear mls nde flow

Use the clear mls nde flow command to reset the NDE filters in the Catalyst 6000 family switches.

clear mls nde flow

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Clearing both exclusion and inclusion filters results in exporting of all flows.

Examples

This example shows how to clear the NDE exclusion and inclusion filters and export all flows:

Console> (enable) clear mls nde flow

Netflow data export filter cleared.

Console> (enable)

Related Commands

show mls exclude protocol
set mls nde

clear mls statistics

Use the clear mls statistics command set to clear hardware-installed MLS statistics entries.

clear mls statistics

clear mls statistics protocol {protocol port} | all

Syntax Description

statistics	Keyword to clear total packets switched and total packets exported (for NDE).
statistics protocol	Keywords to clear protocols for statistics collection.
protocol	Number of the protocol in the protocol statistics list.
port	Number of the port.
all	Keyword to clear all entries from the statistics protocol list.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

To use a router as an MLS, you must meet these conditions:

•The router must be included (either explicitly or automatically) in the MLS-SE.

•The MLS feature must be enabled in the Catalyst 6000 family switches.

•Catalyst 6000 family switches must know the router's MAC-VLAN pairs.

If you enter any of the clear mls statistics commands on a Catalyst 6000 family switch without MLS, this warning message displays:

Feature not supported in hardware.

When you remove an MSM from the Catalyst 6000 family switch, it is removed immediately from the inclusion list and all the MLS entries for the MSM are removed.

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 the statistics collection:

Console> (enable) clear mls statistics protocol 17 19344

Protocol 17 port 1934 cleared from protocol statistics list.

Console> (enable)

Related Commands

set mls statistics protocol
show mls statistics

clear mls statistics entry

Use the clear mls statistics entry command set to clear statistics for MLS entries.

clear mls statistics entry [ip | ipx] all

clear mls statistics entry ip [destination ip_addr_spec] [source ip_addr_spec]
[protocol protocol] [src-port src_port] [dst-port dst_port]

clear mls statistics entry ipx destination ipx_addr_spec

Syntax Description

ip	(Optional) Keyword to specify IP MLS.
ipx	(Optional) Keyword to specify IPX MLS.
all	Keyword to purge all matching MLS entries.
destination	(Optional) Keyword to specify the destination IP address.
ip_addr_spec	(Optional) Full IP address or a subnet address in these formats: ip_addr, ip_addr/netmask, or ip_addr/maskbit.
source	(Optional) Keyword to specify the source IP address.
protocol protocol	(Optional) Keyword and variable to specify additional flow information (protocol family and protocol port pair) to be matched; valid values are from 0 to 255 or ip, ipinip, icmp, igmp, tcp, and udp.
src-port src_port	(Optional) Keyword and variable to specify the source port IP address; valid values are from 1 to 65535, dns, ftp, smtp, telnet, x (X-Windows), www.
dst-port dst_port	(Optional) Keyword and variable to specify the destination port IP address; valid values are from 1 to 65535, dns, ftp, smtp, telnet, x (X-Windows), www.
ipx_addr_spec	(Optional) Full IPX address or a subnet address in these formats: src_net/[mask], dest_net.dest_node, or dest_net/mask.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

When specifying the ip | ipx keyword, if you specify ip or do not enter a keyword, this means that the command is for IP MLS. If you specify ipx, this means the command is for IPX only.

When you remove an MSM from the Catalyst 6000 family switch, it is removed immediately from the inclusion list and all the MLS entries for the MSM are removed.

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)

Up to 16 routers can be included explicitly as MLS-RPs.

To use a router as an MLS, you must meet these conditions:

•The router must be included (either explicitly or automatically) in the MLS-SE.

•The MLS feature must be enabled in the Catalyst 6000 family switches.

•Catalyst 6000 family switches must know the router's MAC-VLAN pairs.

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.

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

If you enter any of the clear mls commands on a Catalyst 6000 family switch without MLS, this warning message displays:

Feature not supported in hardware.

Examples

This example shows how to clear all specific MLS entries:

Console> (enable) clear mls statistics entry ip all

Multilayer switching entry cleared

Console> (enable)

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

Console> (enable) clear mls statistics entry ipx destination 1.0002.00e0.fefc.6000

MLS IPX entry cleared.

Console> (enable)

Related Commands

show mls

clear module password

Use the clear module password command to clear the password set by the password [username] NAM command.

clear module password mod

Syntax Description

mod	Number of the NAM.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported by the NAM only.

The password [username] command is a NAM command and not a supervisor engine console command.

A message is displayed when the password is successfully cleared. See the "Examples" section for an example of the message.

Examples

This example shows how to clear the password from the NAM:

Console> (enable) clear module password 6

Module 6 password cleared.

Console> (enable) 2000 Apr 07 11:03:06 %SYS-5-MOD_PASSWDCLR:Module 6 password cl

eared from telnet/10.6.1.10/tester

Console> (enable) 

Related Commands

password (refer to the NAM Installation and Configuration Note)

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/port | all}

Syntax Description

mod/port	Number of the module and the port on the module.
all	Keyword to specify all multicast router ports to be cleared.

Defaults

The default configuration has no multicast router ports configured.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear multicast router port 1 on module 3:

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 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 to specify all server addresses in the server table to be removed.

Defaults

The default configuration has no NTP servers configured.

Command Types

Switch command.

Command Modes

Privileged.

Examples

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

Console> (enable) clear ntp server all

All NTP servers cleared.

Console> (enable)

Related Commands

show ntpclear ntp timezone

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

clear ntp 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 ntp timezone command functions only when NTP is running. If you set the time manually and NTP is disengaged, the clear ntp timezone command has no effect.

Examples

This example shows how to clear the time zone:

Console> (enable) clear ntp timezone

This command will clear NTP timezone and summertime zonename

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

Timezone name and offset cleared

Console> (enable) 

Related Commands

set ntp timezone
show ntp

clear pbf

Use the clear pbf command to remove the MAC address for the PFC2.

clear pbf

Syntax Description

This command has no keywords or arguments.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Refer to the "Configuring Policy-Based Forwarding" section of Chapter 16, "Configuring Access Control," in the Catalyst 6000 Family Software Configuration Guide for detailed information about PBF.

Examples

Console> (enable) clear pbf

PBF cleared

Console> (enable)

Related Commands

set pbf
show pbf

clear port broadcast

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

clear port broadcast mod/port

Syntax Description

mod/port

Number of the module and the port on the module.

Defaults

The default configuration has broadcast/multicast suppression cleared (that is, unlimited broadcast/multicast traffic allowed).

Command Types

Switch command.

Command Modes

Privileged.

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 broadcast

clear port cops

Use the clear port cops command set to clear port roles.

clear port cops mod/port roles role1 [role2]...

clear port cops mod/port all-roles

Syntax Description

mod/port	Number of the module and the port on the module.
roles role#	Keyword and variable to specify the roles to clear.
all-roles	Keyword to clear all roles.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

The clear port cops command detaches the roles from the port only; it does not remove them from the global table.

Examples

This example shows how to remove specific roles from a port:

Console> (enable) clear port cops 3/1 roles backbone_port main_port

Roles cleared for port(s) 3/1-4.

Console> (enable)

This example shows how to remove all roles from a port:

Console> (enable) clear port cops 3/1 all-roles

All roles cleared for port 3/1-4.

Console> (enable)

Related Commands

set port cops
show port cops

clear port host

Use the clear port host command to clear the port configuration for optimizing a host connection.

clear port host mod/port

Syntax Description

mod/port

Number of the module and the port on the module.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is not supported by the NAM.

The clear port host command sets channel mode to auto, disables spanning tree PortFast, and sets the trunk mode to auto.

Examples

This example shows how to remove specific roles from a port:

Console> (enable) clear port host 5/5

Port(s)  5/5 trunk mode set to auto.

Spantree port  5/5 fast start disabled.

Port(s) 5/5 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 cos command to the default settings for all specified ports.

clear port qos mod/ports.. cos

Syntax Description

mod/ports..

Number of the module and ports on the module.

Defaults

The default CoS for a port is 0.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to return the values set by the set port qos cos command to the default settings 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 cos
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/port {mac_addr | all}

Syntax Description

mod/port	Number of the module and the port on the module.
mac_addr	MAC address to be deleted.
all	Keyword to remove all MAC addresses.

Defaults

This command has no default settings.

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 pvlan mapping

Use the clear pvlan mapping command set to delete a private VLAN mapping.

clear pvlan mapping primary_vlan {isolated_vlan | community_vlan | twoway_community_vlan} mod/port

clear pvlan mapping mod/port

Syntax Description

primary_vlan	Number of the primary VLAN.
isolated_vlan	Number of the isolated VLAN.
community_vlan	Number of the community VLAN.
twoway_community_vlan	Number of the two-way community VLAN.
mod/port	Number of the module and promiscuous port.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you do not specify the mapping to clear, all the mappings of the specified promiscuous ports are cleared.

Examples

This example shows how to clear the mapping of VLAN 902 to 901, previously set on ports 3/2-5:

Console> (enable) clear pvlan mapping 901 902 3/2-5

Successfully cleared mapping between 901 and 902 on 3/2-5 
Console> (enable) 

Related Commands

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

clear qos acl

Use the clear qos acl command set to remove various ACL configurations.

clear qos acl acl_name [editbuffer_index]

clear qos acl default-action {ip | ipx | mac | all}

clear qos acl map {acl_name} {mod/port | vlan}

clear qos acl map {acl_name | mod/port | vlan | all}

Syntax Description

acl_name	Unique name that identifies the list to which the entry belongs.
editbuffer_index	(Optional) ACE position in the ACL.
default-action	Keyword to remove default actions.
ip	Keyword to clear IP ACE default actions.
ipx	Keyword to clear IPX ACE default actions.
mac	Keyword to clear MAC-layer ACE default actions.
all	Keyword to clear all ACE default actions.
map	Keyword to detach an ACL.
mod/port	Number of the module and the port on the module.
vlan	Number of the VLAN; valid values are from 1 to 1000 and from 1025 to 4094.
all	Keyword to detach an ACL from all interfaces.

Defaults

The default is no ACLs are attached.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Changes you make by entering this command are saved to NVRAM and hardware only after you enter the commit command.

Use the show qos acl editbuffer command to display the ACL list.

Examples

This example shows how to detach an ACL from all interfaces:

Console> (enable) clear qos acl map my_acl all

Hardware programming in progress...

ACL my_acl is detached from all interfaces.

Console> (enable) 

This example shows how to detach an ACL from a specific VLAN:

Console> (enable) clear qos acl map ftp_acl 4

Hardware programming in progress...

ACL ftp_acl is detached from vlan 4.

Console> (enable) 

This example shows how to delete a specific ACE:

Console> (enable) clear qos acl my_ip_acl 1

ACL my_ip_acl ACE# 1 is deleted.

my_ip_acl editbuffer modified. Use `commit' command to apply changes.

Console> (enable) 

This example shows how to delete an ACL:

Console> (enable) clear qos acl my_ip_acl

ACL my_ip_acl is deleted.

my_ip_acl editbuffer modified. Use `commit' command to apply changes.

Console> (enable) 

This example shows how to detach a specific ACL from all interfaces:

Console> (enable) clear qos acl map my_acl all

Hardware programming in progress...

ACL my_acl is detached from all interfaces.

Console> (enable) 

This example shows how to detach a specific ACL from a specific VLAN:

Console> (enable) clear qos acl map ftp_acl 4

Hardware programming in progress...

ACL ftp_acl is detached from vlan 4.

Console> (enable) 

This example shows how to delete IP ACE default actions configured by the set qos acl default-action command:

Console> (enable) clear qos acl default-action ip

Hardware programming in progress...

QoS default-action for IP ACL is restored to default setting.

Console> (enable) 

Related Commands

show qos acl editbuffer
commit
rollback

clear qos config

Use the clear qos config command to return the values set by the set qos command to the default settings and delete the CoS assigned to MAC addresses.

clear qos config

Syntax Description

This command has no arguments or keywords.

Defaults

The default is QoS is disabled.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to return the values set by the set qos command to the default settings 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 cos-dscp-map

Use the clear qos cos-dscp-map command to clear CoS-to-DSCP mapping set by the set qos cos-dscp-map command and return to the default setting.

clear qos cos-dscp-map

Syntax Description

This command has no arguments or keywords.

Defaults

The default CoS-to-DSCP configuration is listed in Table 2-2.

Table 2-2 CoS-to-DSCP Default Mapping

CoS	0	1	2	3	4	5	6	7
DSCP	0	8	16	24	32	40	48	56

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear the CoS-to-DSCP mapping table:

Console> (enable) clear qos cos-dscp-map

QoS cos-dscp-map setting restored to default.

Console> (enable) 

Related Commands

set qos cos-dscp-map
show qos maps

clear qos dscp-cos-map

Use the clear qos dscp-cos-map command to clear DSCP-to-CoS mapping set by the set qos dscp-cos-map command and return to the default setting.

clear qos dscp-cos-map

Syntax Description

This command has no arguments or keywords.

Defaults

The default DSCP-to-CoS configuration is listed in Table 2-3.

Table 2-3 DSCP-to-CoS Default Mapping

DSCP	0 to 7	8 to 15	16 to 23	24 to 31	32 to 39	40 to 47	48 to 55	56 to 63
CoS	0	1	2	3	4	5	6	7

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear the DSCP-to-CoS mapping table:

Console> (enable) clear qos dscp-cos-map

QoS dscp-cos-map setting restored to default.

Console> (enable) 

Related Commands

set qos dscp-cos-map
show qos maps

clear qos ipprec-dscp-map

Use the clear qos ipprec-dscp-map command to reset the mapping set by the set qos ipprec-dscp-map command to the default setting.

clear qos ipprec-dscp-map

Syntax Description

This command has no arguments or keywords.

Defaults

The default IP precedence-to-DSCP configuration is listed in Table 2-4.

Table 2-4 IP Precedence-to-DSCP Default Mapping

IPPREC	0	1	2	3	4	5	6	7
DSCP	0	8	16	24	32	40	48	56

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear the IP precedence-to-DSCP mapping table:

Console> (enable) clear qos ipprec-dscp-map

QoS ipprec-dscp-map setting restored to default.

Console> (enable) 

Related Commands

set qos ipprec-dscp-map
show qos maps

clear qos mac-cos

Use the clear qos mac-cos command set 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	Number of the destination host MAC address.
vlan	(Optional) Number of the VLAN; valid values are from 1 to 1000 and from 1025 to 4094.
all	Keyword to clear CoS values for all MAC/VLAN pairs.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

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 settings 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 settings 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 values to the default settings.

clear qos map port_type tx | rx

Syntax Description

port_type	Port type; valid values are 2q2t, 1p3q1t, and 1p2q2t for transmit and 1p1q4t and 1p1q0t for receive. See the "Usage Guidelines" section for additional information.
tx | rx	Keyword to specify the transmit or receive queue.

Defaults

The default mappings for all ports are shown in Table 2-5 and Table 2-6 and applies to all ports.

Table 2-5 Default Transmit Queue and Drop-Threshold Mapping of CoS Values

Port Type	Drop Threshold Type	Low Delay (Queue 2)	High Delay (Queue 1)	Priority Delay (Queue 3)
2q2t	Low drop (Threshold 2)	7, 6	3, 2	N/A
	High drop (Threshold 1)	5, 4	1, 0	N/A
1p2q2t	Low drop (Threshold 2)	7	3, 2	N/A
	High drop (Threshold 1)	5, 4	1, 0	5

Table 2-6 Default Receive Drop-Threshold Mapping of CoS Values

Port Type	Threshold 1 (highest drop)	Threshold 2	Threshold 3	Threshold 4 (lowest drop)	Priority Queue
1p1q0t	0, 1	2, 3	4, 5	7	6
1p1q4t	0, 1	2, 3	4, 5	7	6

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

The 1p2q1t and 1p1q8t port types are not supported.

Examples

This example shows how to return the values to the default settings:

Console> (enable) clear qos map 2q2t

This command will take map values back to factory default.

QoS map cleared.

Console> (enable) 

Related Commands

set qos map
show qos maps

clear qos policed-dscp-map

Use the clear qos policed-dscp-map to reset the policer-to-dscp mapping table to the defaults.

clear qos policed-dscp-map

Syntax Description

This command has no arguments or keywords.

Defaults

The default is the identity function; for example, DSCP 63 to policed DSCP 63 and DSCP 62 to policed DSCP 62.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to reset the mapping to the defaults:

Console> (enable) clear qos policed-dscp-map

QoS policed-dscp-map setting restored to default.

Console> (enable) 

Related Commands

set qos policed-dscp-map
show qos maps

clear qos policer

Use the clear qos policer command set to clear policing rules from NVRAM.

clear qos policer microflow microflow_name | all

clear qos policer aggregate aggregate_name | all

Syntax Description

microflow microflow_name	Keyword and variable to specify the name of the microflow policing rule.
aggregate aggregate_name	Keyword and variable to specify the name of the aggregate policing rule.
all	Keyword to clear all policing rules.

Defaults

This command has no default setting in systems configured with the Supervisor Engine 1 with Layer 3 Switching Engine (PFC); in systems configured with Supervisor Engine 2 with Layer 3 Switching Engine II (PFC2), the default is to apply the given map to the normal rate only.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Policing is the process by which the switch limits the bandwidth consumed by a flow of traffic. Policing can mark or drop traffic.

You cannot clear an entry that is currently being used in an ACE. You must first detach the ACEs from the interface.

You cannot use the all keyword if a microflow rate limit is currently being used in an ACE.

The normal and excess keywords are supported on systems configured with the Supervisor Engine 2 with Layer 3 Switching Engine II (PFC2) only. With these keywords, you can specify a map for the normal rate and one for the excess rate. Because this selection is optional in the CLI, the default (unspecified) action is to apply the given map to the normal rate only.

This example shows how to clear a specific microflow policing rule:

Console> (enable) clear qos policer microflow my_micro 

my_micro QoS microflow policer cleared.

Console> (enable) 

This example shows how to clear all microflow policing rules:

Console> (enable) clear qos policer microflow all

All QoS microflow policers cleared.

Console> (enable) 

This example shows how to clear a specific aggregate policing rule:

Console> (enable) clear qos policer aggregate my_micro 

my_micro QoS microflow policer cleared.

Console> (enable) 

This example shows how to clear all aggregate policing rules:

Console> (enable) clear qos policer aggregate all

All QoS aggregate policer cleared.

Console> (enable)

Related Commands

set qos policer
show qos policer

clear qos statistics

Use the clear qos statistics command to clear QoS statistic counters.

clear qos statistics

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear the QoS statistic counters:

Console> (enable) clear qos statistics

QoS statistical cleared.

Console> (enable)

Related Commands

show qos statistics

clear radius

Use the clear radius command set to clear one or all of the RADIUS servers from the RADIUS server table or remove a shared key entry.

clear radius server all

clear radius server ipaddr

clear radius key

Syntax Description

server	Keyword to specify RADIUS servers.
all	Keyword to specify all RADIUS servers.
ipaddr	Number of the IP address or IP alias.
key	Keyword to specify the RADIUS shared key.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

ipaddr is an IP alias or an IP address in dot notation; for example, 101.102.103.104.

Examples

This example shows how to clear the RADIUS key:

Console> (enable) clear radius key

Radius server key cleared.

Console> (enable) 

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

Console> (enable) clear radius server 128.56.45.32

128.56.45.32 cleared from radius server table.

Console> (enable) 

Related Commands

set radius key
set radius server
show radius

clear rcp

Use the clear rcp command to clear rcp information for file transfers.

clear rcp

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear rcp information:

Console> (enable) clear rcp

Console> (enable) 

Related Commands

set rcp username
show rcp

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 settings.

Command Types

Switch command.

Command Modes

Privileged.

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

set rgmp
show rgmp statistics

clear security acl

Use the clear security acl command set to remove a specific ACE or all ACEs from a VACL and delete the VACLs from the edit buffer.

clear security acl all

clear security acl acl_name

clear security acl capture-ports {all | mod/ports}

clear security acl log flow

clear security acl acl_name [editbuffer_index]

clear security acl adjacency adjacency_name

clear security acl map {acl_name | vlan | all}

Syntax Description

all	Keyword to remove ACEs for all the VACLs.
acl_name	Name of the VACL whose ACEs are to be removed.
capture-ports	Keyword to remove ports from the capture list.
all	Keyword to remove all ports from the capture list.
mod/ports	Variable to remove specific port from the capture list; mod/num is the number of the module and the port on the module.
log flow	Keywords to remove logging table flow entries.
editbuffer_index	(Optional) Index number of the ACE in the VACL.
adjacency	Keyword to remove an adjacency ACE.
adjacency_name	Name of the adjacency ACE.
map	Keyword to clear security ACL to a VLAN mapping.
vlan	Variable to clear ACL mappings for a specific VLAN.
all	Keyword to clear all ACL VLAN mappings.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Changes you make by entering this command are saved to NVRAM and hardware only after you enter the commit command.

Use the show security acl command to display the VACL list.

The adjacency ACE cannot be cleared before the redirect ACE. The redirect ACE and the adjacency ACE in PBF VACLs should be cleared in the following order:

1. Clear the redirect ACE.

2. Commit the VACL.

3. Clear the adjacency ACE.

4. Commit the adjacency.

Examples

This example shows how to remove ACEs for all the VACLs:

Console> (enable) clear security acl all

All editbuffer modified. Use `commit' command to apply changes.

Console> (enable)

This example shows how to remove a specific ACE from a specific VACL:

Console> (enable) clear security acl IPACL1 2

IPACL1 editbuffer modified. Use `commit' command to apply changes.

Console> (enable)

This example shows how to remove an adjacency ACE:

Console> (enable) clear security acl adjacency a_1

a_1 editbuffer modified. Use 'commit' command to apply changes.

Console> (enable)

Related Commands

commit
show security acl
rollback

clear security acl capture-ports

Use the clear security acl capture-ports command to remove a port from the capture port list.

clear security acl capture-ports {mod/ports...}

Syntax Description

mod/ports...

Number of the module and the ports on the module.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Configurations you make by entering this command are saved in NVRAM. This command does not require that you enter the commit command.

If you have a given number of ports and a few are removed, the remaining ports continue to capture the traffic.

Examples

This example shows how to remove entries from the capture port list:

Console> (enable) clear security acl capture-ports 1/1,2/1

Successfully cleared the following ports:

1/1,2/1

Console> (enable) 

Related Commands

show security acl capture-ports
set security acl capture-ports

clear security acl log flow

Use the clear security acl log flow command to clear all flows in the security ACL log table.

clear security acl log flow

Syntax Description

This command has no keywords or arguments.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported on systems configured with Supervisor Engine 2 with Layer 3 Switching Engine II (PFC2) only.

Examples

This example shows how to clear all flows in the security ACL log table:

Console> (enable) clear security acl log flow   

Security acl log table cleared successfully

Console> (enable) 

Related Commands

set security acl log
show security acl log

clear security acl map

Use the clear security acl map command set to remove VACL-to-VLAN mapping.

clear security acl map acl_name vlan

clear security acl map {acl_name | vlan | all}

Syntax Description

acl_name	Name of the VACL whose VLAN is to be deleted.
vlan	Number of the VLAN whose mapping is to be deleted; valid values are from 1 to 1000 and from 1025 to 4094.
all	Keyword to remove all VACL-to-VLAN mappings.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Changes you make by entering this command are saved to NVRAM and do not require you to enter the commit command.

Use the show security acl command to display the ACL list.

Examples

This example shows how to remove a VACL-to-VLAN mapping from a specific VLAN:

Console> (enable) clear security acl map ip1 3

Map deletion in progress.

Successfully cleared mapping between ACL ip1 and VLAN 3.

Console> (enable)

This example shows how to remove a specific VACL-to-VLAN mapping from all VLANs:

Console> (enable) clear security acl map ip1

Map deletion in progress.

Successfully cleared mapping between ACL ip1 and VLAN 5.

Successfully cleared mapping between ACL ip1 and VLAN 8.

Console> (enable)

This example shows how to remove all VACL-to-VLAN mappings from a specific VLAN:

Console> (enable) clear security acl map 5

Map deletion in progress.

Successfully cleared mapping between ACL ipx1 and VLAN 5.

Successfully cleared mapping between ACL mac2 and VLAN 5.

Console> (enable)

This example shows how to remove all VACL-to-VLAN mappings from all VLANs:

Console> (enable) clear security acl map all

Map deletion in progress.

Successfully cleared mapping between ACL ip2 and VLAN 12.

Successfully cleared mapping between ACL ipx1 and VLAN 12.

Successfully cleared mapping between ACL ipx1 and VLAN 45.

Successfully cleared mapping between ACL ip2 and VLAN 47.

Successfully cleared mapping between ACL ip3 and VLAN 56.

Console> (enable)

Related Commands

commit
show security acl
rollback

clear snmp access

Use the clear snmp access command set to remove the access rights of an SNMP group.

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

clear snmp access {security-model v3 {noauthentication | authentication | privacy}}
[context [-hex] contextname]

Syntax Description

-hex	(Optional) Keyword to display the groupname or contextname in a hexadecimal format.
groupname	SNMP access table name.
security-model v1 | v2c	Keywords to specify the security model v1 or v2c.
security-model v3	Keywords to specify security model v3.
noauthentication	Keyword to specify groups with security model type set to noauthentication.
authentication	Keyword to specify groups with security model type authentication protocol.
privacy	Keyword to specify groups with security model type privacy.
context contextname	(Optional) Keyword and variable to specify the name of a context string.

Defaults

The default contextname is a NULL string.

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.

If you do not enter a context name, a NULL context string is used.

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 access
show snmp context

clear snmp community

Use the clear snmp community command to remove the mappings between different community strings and security modes.

clear snmp community index [-hex] {index_name}

Syntax Description

index	Keyword to specify clearing an index.
-hex	(Optional) Keyword to display the index_name in a hexadecimal format.
index_name	Name of the SNMP index.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you use special characters for index_name (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.

If you do not enter an index_name, a NULL context string is used.

Examples

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

Console> (enable) clear snmp community index ind1

Cleared snmp community ind1.

Console> (enable) 

Related Commands

set snmp community
show snmp community

clear snmp group

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

clear snmp group [-hex] groupname {user [-hex] username} {security-model {v1 | v2c | v3}}

Syntax Description

-hex	(Optional) Keyword to display the groupname and username as a hexadecimal format.
groupname	Name of the SNMP group that defines an access control.
user	Keyword to specify the SNMP group username.
username	Name of the SNMP user.
security model v1 | v2c | v3	Keywords to specify 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 remove an SNMP user from a group:

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 group

clear snmp notify

Use the clear snmp notify command to clear the SNMP notifyname in the snmpNotifyTable.

clear snmp notify [-hex] {notifyname}

Syntax Description

-hex	(Optional) Keyword to display the notifyname as a hexadecimal format.
notifyname	Identifier to index the snmpNotifyTable.

Defaults

This command has no default settings.

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 notify

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	(Optional) Keyword to display the addrname as a hexadecimal format.
addrname	Name of the target agent; the maximum length is 32 bytes.

Defaults

This command has no default settings.

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 targetaddr

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	(Optional) 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 settings.

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 remove the SNMP target parameters:

Console> (enable) clear snmp targetparams joe

Cleared SNMP targetparams table joe.

Console> (enable) 

Related Commands

set snmp targetparams
show snmp targetparams

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.
all	(Optional) Keyword to specify 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 192.122.173.82

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	(Optional) Keyword to display 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 to specify 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 user

clear snmp view

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

clear snmp view [-hex] {viewname subtree}

Syntax Description

-hex	(Optional) Keyword to display the viewname as a hexadecimal format.
viewname	Name of a MIB view.
subtree	Name of the subtree.

Defaults

This command has no default settings.

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 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 view

clear spantree portinstancecost

Use the clear spantree portinstancecost command to restore the default path cost to an instance on a port.

clear spantree portinstancecost mod/port instances

Syntax Description

mod/port	Number of the module and the port on the module.
instances	Number of the instance; valid values are from 1 to 16.

Defaults

The default path cost is based on port speed; see Table 2-7 for default settings.

Table 2-7 Default Port Cost—Short Mode

Port Speed	Default Port Cost
4 Mb	250
10 Mb	100
16 Mb	62
100 Mb	19
155 Mb	14
1 Gb	4
10 Gb	2

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to restore the default path cost to an instance on a port:

Console> (enable) clear spantree portinstancecost 5/1 2

Port 5/1 mistp-instance 1-16 have path cost 200000.

Console> (enable)

Usage Guidelines

This command is valid in MISTP mode only.

Related Commands

set spantree portinstancecost
show spantree statistics

clear spantree portinstancepri

Use the clear spantree portinstancepri command to reset the spanning tree port instance priority.

clear spantree portinstancepri mod/port [instances]

Syntax Description

mod/port	Number of the module and the port on the module.
instances	(Optional) Number of the instance; valid values are from 1 to 16.

Defaults

The default is the port priority is set to 0 with no instances specified.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is valid in MISTP mode only.

Examples

This example shows how to reset the spanning tree port instance priority:

Console> (enable) clear spantree portinstancepri 5/1 2

Port 5/1 instances 1-16 using portpri 32.

Console> (enable)

Related Commands

set spantree portinstancepri
show spantree

clear spantree portvlancost

Use the clear spantree portvlancost command to restore the default path cost to a VLAN on a port.

clear spantree portvlancost mod/port [vlans]

Syntax Description

mod/port	Number of the module and the port on the module.
vlans	(Optional) Number of the VLAN; valid values are from 1 to 1000 and from 1025 to 4094.

Defaults

The default path cost is based on port speed; see Table 2-8 and Table 2-9 for default settings.

Table 2-8 Default Port Cost—Short Mode

Port Speed	Default Port Cost
4 Mb	250
10 Mb	100
16 Mb	62
100 Mb	19
155 Mb	14
1 Gb	4
10 Gb	2

Table 2-9 Default Port Cost—Long Mode

Port Speed	Default Port Cost
100 Kb	200,000,000
1 Mb	20,000,000
10 Mb	2,000,000
100 Mb	200,000
1 Gb	20,000
10 Gb	2,000
100 Gb	200
1 Tb	20
10 Tb	2

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is valid in PVST+ mode only.

If you do not specify a VLAN, all VLANs are cleared.

Examples

These examples show how to restore the default path cost to a VLAN on a port:

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)

Console> (enable) clear spantree portvlancost 2/10

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

Console> (enable)

Related Commands

set spantree portvlancost
show spantree statistics

clear spantree portvlanpri

Use the clear spantree portvlanpri command to reset the spanning tree port VLAN priority.

clear spantree portvlanpri mod/port [vlans]

Syntax Description

mod/port	Number of the module and the port on the module.
vlans	(Optional) Number of the VLAN; valid values are from 1 to 1000 and from 1025 to 4094.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to reset the spanning tree port VLAN priority:

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]

clear spantree root mistp-instance instances

Syntax Description

vlans	(Optional) Number of the VLAN; valid values are from 1 to 1000 and from 1025 to 4094.
mistp-instance instances	Keyword and variable to specify the instance number; valid values are from 1 to 16.

Defaults

The defaults are as follows:

•switch priority is 32768

•forward delay is 15 seconds

•hello time is 2 seconds

•maxage is 20 seconds

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to clear the spanning tree root on a range of VLANs:

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.

This example shows how to clear the spanning tree root on two specific VLANs:

Console> (enable) clear spantree root 22,24

VLANs 22,24 bridge priority set to 32678.

VLANs 22,24 bridge hello time set to 2 seconds.

VLANs 22,24 bridge max aging time set to 20 seconds.

VLANs 22,24 bridge forward delay set to 15 seconds.

Console> (enable)

This example shows how to clear the spanning tree root on an instance:

Console> (enable) clear spantree root mistp-instance 1

Instance 1 bridge priority set to 32768.

Instance 1 bridge max aging time set to 20.

Instance 1 bridge hello time set to 2.

Instance 1 bridge forward delay set to 15.

Console> (enable)

Related Commands

set spantree root
show spantree

clear spantree statistics

Use the clear spantree statistics command set to clear the spanning tree statistics.

clear spantree statistics mod/port

clear spantree statistics vlans

clear spantree statistics mistp-instance instances

Syntax Description

mod/port	Number of the module and the port on the module.
vlans	(Optional) Number of the VLAN; valid values are from 1 to 1000 and from 1025 to 4094.
mistp-instance instances	Keyword and variable to specify the instance number; valid values are from 1 to 16.

Defaults

This command has no default settings.

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)

This example shows how to clear the spanning tree statistics for a port:

Console> (enable) clear spantree statistics 3/1

Statistics cleared for module 3/1

Console> (enable)

This example shows how to clear the spanning tree statistics for an instance:

Console> (enable) clear spantree statistics mistp-instance 2

Statistics cleared for instances 2

Console> (enable)

Related Commands

show spantree statistics

clear spantree uplinkfast

Use the clear spantree uplinkfast command to turn off the UplinkFast feature and to return the switch priority and port costs to the default settings.

clear spantree uplinkfast

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

In some cases, this command could cause load balancing on the switch to be lost.

Examples

This example shows how to turn off the UplinkFast feature and to return the switch priority to the default settings:

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 tacacs key

Use the clear tacacs key command to remove the key setting used for TACACS+ authentication and encryption.

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 key setting 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

Syntax Description

ip_addr

IP address of the server to be removed from the list of TACACS+ servers.

Defaults

This command has no default settings.

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 170.1.2.20

170.1.2.20 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 running. If you set the time manually and NTP is disengaged, 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 stop the TopN process.

clear top {all | report_num}

Syntax Description

all	Keyword to stop all nonpending TopN results.
report_num	TopN report number to kill; valid values are from 1 to 5.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

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

You can terminate TopN processes without the background option (use the show top background command to find out if the background option is used) 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. The prompt is not printed 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 1 process from a console session:

Console> (enable) clear top 1

10/29/1998,12:05:38:MGMT-5: TopN report 1 killed by Console//.

Console> (enable)

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

Console> (enable) clear top 4 

10/29/1998,12:06:00:MGMT-5: TopN report 4 killed by telnet/172.22.34.2/.

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/port [vlans]

Syntax Description

mod/port	Number of the module and the port on the module.
vlans	(Optional) Number of the VLAN to remove from the allowed VLAN list; valid values are from 2 to 1005 and 1025 to 4094.

Defaults

For all ports except MSM ports, the default is auto negotiate. For MSM ports, the default is off negotiate mode.

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. Default VLANs cannot be cleared on the trunk.

Traffic for the removed VLANs are not forwarded over a trunk port. To add VLANs that you have removed, use the set trunk mod/port vlans command.

If you are trying to clear extended-range VLANs and sufficient space in NVRAM is not available, a warning message displays and the command fails.

Examples

This example shows how to clear VLANs 200 through 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 the output if you attempt to clear a trunk when not enough NVRAM space is available:

Console> (enable) clear trunk 2/18 1030-1999

Failed to clear extended range vlans from allowed list.

Not enough NVRAM space. Use the `set trunk' command to restore 

       some existing entries to the default value.

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 vlans

Syntax Description

vlans

Number of the VLAN; valid values are from 1 to 1000 and from 1025 to 4094.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Follow these guidelines for deleting VLANs:

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

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

•You can delete an extended-range VLAN only on the switch where it was created.

---

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.

---

When you clear a private VLAN (primary, isolated, or community), the ports are set to inactive and are not assigned to any VLAN. The private VLAN mappings for the selected VLAN are also cleared. ACL to VLAN mappings are also deleted.

Examples

This example shows how to clear existing VLAN 4000 from a management domain:

Console> (enable) clear vlan 4000 
This command will de-activate 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 set to delete existing IEEE 802.1Q VLAN-to-ISL VLAN mappings or reserved-to-nonreserved VLAN mapping.

clear vlan mapping dot1q {dot1q_vlan | all}

clear vlan mapping reserved {reserved_vlan | all}

Syntax Description

dot1q dot1q_vlan	Keyword and variable to clear the IEEE 802.1Q VLAN-to-ISL VLAN mapping.
dot1q all	Keywords to clear all IEEE 802.1Q VLAN-to-ISL VLAN mappings.
reserved reserved_vlan	Keyword and variable to clear the specified reserved-to-nonreserved VLAN mapping.
reserved all	Keywords to clear all reserved-to-nonreserved VLAN mappings.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

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.

Examples

This example shows how to clear an existing mapped VLAN from the dot1q mapping table:

Console> (enable) clear vlan mapping dot1q 444

Vlan Mapping 444 Deleted.

Console> (enable) 

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

Console> (enable) clear vlan mapping dot1q all

All Vlan Mapping Deleted.

Console> (enable) 

This example shows how to clear mapped reserved VLANs from the mapping table:

Console> (enable) clear vlan mapping reserved 1007

Vlan Mapping 1007 Deleted.

Console> (enable) 

Related Commands

set vlan
show vlan

clear vmps rcp

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

clear vmps rcp username

Syntax Description

username

Username up to 14 characters long.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

If you do not enter a username, all rcp usernames are deleted.

Examples

This example shows how to clear a specific VMPS rcp username from the VMPS table:

Console> (enable) clear vmps rcp jdoe

Console> (enable)

Related Commands

set rcp username

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 or host name of the VMPS server to be deleted.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

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
set vmps server

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 settings.

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 vlans...

Syntax Description

vlans...

Number of VLANs to make pruning ineligible; valid values are from 1 to 1000.

Defaults

The default is VLANs 2 through 1000 are eligible for pruning.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

VTP pruning causes information about each pruning-eligible VLAN to be removed from VTP updates if no stations belong to that VLAN out a particular switch port. Use the set vtp command to enable VTP pruning.

By default, VLANs 2 through 1000 are pruning eligible. Use the clear vtp pruneeligible command to make VLANs pruning ineligible.

If VLANs are pruning ineligible, use the set vtp pruneeligible command to make the VLANs pruning eligible again.

Examples

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

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 domain