Table Of Contents

set spantree priority

set spantree root

set spantree uplinkfast

set standbyports

set station softerror

set summertime

set system baud

set system contact

set system core-dump

set system core-file

set system countrycode

set system location

set system modem

set system name

set tacacs attempts

set tacacs directedrequest

set tacacs key

set tacacs server

set tacacs timeout

set test diaglevel

set test packetbuffer

set time

set timezone

set tokenring acbits

set tokenring configloss

set tokenring distrib-crf

set tokenring etr

set tokenring explorer-throttle

set tokenring locallearning

set tokenring portaging

set tokenring portmode

2

set spantree priority

Use the set spantree priority command to set the bridge priority for a VLAN.

set spantree priority bridge_priority [vlan]

Syntax Description

bridge_priority	Number representing the priority of the bridge; vaild values are 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, and 6144, with 0 indicating high priority and 61440, low priority.
vlan	(Optional) Number of the VLAN. If you do not specify a VLAN number, VLAN 1 is used; valid values are from 1 to 1005.

Defaults

The default configuration has the bridge priority set to 32768.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This feature is not supported for the RSM.

Examples

This example shows how to set the bridge priority of VLAN 1 to 4096:

Console> (enable) set spantree priority 4096

VLAN 1 bridge priority set to 4096.

Console> (enable)

Related Commands

show spantree

set spantree root

Use the set spantree root command to set the primary or secondary root for specific VLANs of the switch or for all VLANs of the switch.

set spantree root [secondary] [vlan_list] [dia network_diameter] [hello hello_time]

Syntax Description

secondary	(Optional) Keyword to designate this switch as a secondary root, if the primary root fails.
vlan_list	(Optional) Number of the VLAN. If you do not specify a VLAN number, VLAN 1 is used; valid values are from 1 to 1005.
dia network_diameter	(Optional) Keyword to specify the maximum number of bridges between any two points of attachment of end stations. Valid values of network_diameter are 2 through 7.
hello hello_time	(Optional) Keyword to specify the duration in seconds between generation of configuration messages by the root switch; valid values of hello_time are from 1 to 10.

Defaults

If the secondary keyword is not specified, the default is to make the switch the primary root.

The default value of the network_diameter is 7.

If not specified, the current value of hello_time from the NVRAM is used.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command runs on backbone or distribution switches.

You can run the secondary root many times to create backup switches in case of a root failure.

The secondary command reduces the bridge priority value to 16384.

This command increases path costs to a value greater than 3000.

Examples

This example shows how to use the set spantree root command:

Console>(enable) set spantree root 1-10 dia 4

VLANs 1-10 bridge priority set to 8192

VLANs 1-10 bridge max aging time set to 14 seconds.

VLANs 1-10 bridge hello time set to 2 seconds.

VLANs 1-10 bridge forward delay set to 9 seconds.

Switch is now the root switch for active VLANs 1-6.

Console> (enable) 

This example shows that setting the bridge priority to 8192 was not sufficient to make this switch the root. The priority was further reduced to 7192 (100 less than the current root switch) to make this switch the root switch. However, reducing the priority did not make it the root switch for active VLANs 16 and 17.

Console>(enable) set spantree root 11-20.

VLANs 11-20 bridge priority set to 7192

VLANs 11-10 bridge max aging time set to 20 seconds.

VLANs 1-10 bridge hello time set to 2 seconds.

VLANs 1-10 bridge forward delay set to 13 seconds.

Switch is now the root switch for active VLANs 11-15,18-20.

Switch could not become root switch for active VLAN 16-17.

Console> (enable) 

Console>(enable) set spantree root secondary 22,24 dia 5 hello 1

VLANs 22,24 bridge priority set to 16384.

VLANs 22,24 bridge max aging time set to 10 seconds.

VLANs 22,24 bridge hello time set to 1 second.

VLANs 22,24 bridge forward delay set to 7 seconds.

Console> (enable) 

Related Commands

clear spantree root
show spantree

set spantree uplinkfast

Use the set spantree uplinkfast command to enable fast switchover to alternate ports when the root port fails. This command applies to a switch, not to a WAN.

set spantree uplinkfast enable [rate station_update_rate] [all-protocols {off | on}]

set spantree uplinkfast disable

Syntax Description

enable	Keyword that enables a fast switchover.
rate	(Optional) Keyword to specify the number of multicast packets transmitted per 100 milliseconds when an alternate port is chosen after the root port goes down.
station_update_rate	(Optional) Number of multicast packets transmitted per 100 milliseconds when an alternate port is chosen after the root port goes down.
all-protocols	(Optional) Keyword to specify whether the switch generates dummy multicast packets for all protocol groups (IP, IPX, and Group) in a network with switches using protocol filtering.
off	(Optional) Keyword to prevent the switch from generating multicasts for all protocol groups.
on	(Optional) Keyword to cause the switch to generate multicasts for all protocol groups.
disable	Keyword that disables fast switchover.

Defaults

The default station_update_rate is 15 packets per 100 milliseconds.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

The set spantree uplinkfast enable command has the following results:

•Changes the bridge priority to 49152 for all VLANs (allowed VLANs).

•Increases the path cost and portvlancost of all ports to a value greater than 3000.

•On detecting the failure of a root port, an instant cutover occurs to an alternate port selected by Spanning Tree Protocol.

If you run set spantree uplinkfast enable on a switch that has this feature already enabled, only the station update rate is updated. The rest of the parameters are not modified.

If you run set spantree uplinkfast disable on a switch, the UplinkFast feature is disabled but the switch priority and port cost values are not reset to the factory defaults. To reset the values to the factory defaults, enter the clear spantree uplinkfast command.

The default station_update_rate value is 15 packets per 100 milliseconds, which is equivalent to a 1 percent load on a 10-Mbps Ethernet port. If you specify this value as 0, the switch does not generate station-update-rate packets.

Use the all-protocols on keywords on switches that have UplinkFast enabled but do not have protocol filtering enabled, and that are connected to upstream switches in the network that have protocol filtering enabled. The all-protocols on keywords cause the switch to generate multicasts for each protocol-filtering group.

On switches with both UplinkFast and protocol filtering enabled, or if no other switches have protocol filtering enabled, you do not need to use the all-protocols on keywords.

Examples

This example shows how to enable the spantree UplinkFast feature and specify the number of multicast packets transmitted to 40 packets per 100 milliseconds:

Console>(enable) set spantree uplinkfast enable rate 40

VLANs 1-1000 bridge priority set to 49152.

The port cost and portvlancost of all ports increased to above 3000.

Station update rate set to 40 packets/100ms.

uplinkfast turned on for bridge.

Console> (enable) 

This example shows how to disable the spantree UplinkFast feature:

console> (enable) set spantree uplinkfast disable

Uplinkfast disabled for switch. 

Use clear spantree uplinkfast to return stp parameters to default.

console>(enable) clear spantree uplink

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) 

This example shows how to enable the all-protocols feature:

Console> (enable) set spantree uplinkfast enable all-protocols on

uplinkfast update packets enabled for all protocols.

uplinkfast already enabled for bridge.

This example shows how to disable the all-protocols feature:

Console> (enable) set spantree uplinkfast disable all-protocols off

uplinkfast all-protocols field set to off.

uplinkfast already enabled for bridge.

Console> (enable)

Related Commands

clear spantree uplinkfast
show spantree uplinkfast

set standbyports

Use the set standbyports command to enable or disable the standby ports feature. The standby ports feature allows the ports on the standby supervisor engine module to pass traffic. If this feature is disabled, the ports are in standby mode.

set standbyports enable | disable

Syntax Description

enable	Keyword to enable the standby ports feature.
disable	Keyword to disable the standby ports feature.

Defaults

The default is disabled. However, if upgrading from supervisor engine software release 4.1 or 4.2, the standby ports feature remains enabled.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to enable the standby ports feature:

Console> (enable) set standbyports enable

Standby ports feature enabled.

Please wait while the standby ports are coming up.

Console> (enable) 

This example shows how to disable the standby ports feature:

Console> (enable) set standbyports disable

Standby ports feature disabled.

Console> (enable) 

Related Commands

show standbyports

set station softerror

Use the set station softerror command to enable or disable the collection of soft error statistics, and define error thresholds and sampling intervals on a Token Ring module or on a specific port on the module.

set station softerror mod[/port] disable | enable [threshold thres_num interval int_num]

Syntax Description

mod	Number of the module and (optional) port on the module.
port	(Optional) number of the port on the module.
disable	Keyword to specify soft error statistics to not be collected for the stations on a module or on a specific port on a module.
enable	Keyword to specify soft error statistics to be collected for the stations on a module or on a specific port on a module.
threshold thres_num	(Optional) Keyword and variable to specify the number of soft errors reported from a station connected to a port that if exceeded causes a soft error exceeded trap to be issued; valid values are from 1 to 255.
interval int_num	(Optional) Keyword and variable to specify the sampling period (in seconds) during which the number of soft errors is monitored for each station connected to a port; valid values are from 0 to 65534 seconds.

Defaults

The default configuration has soft error monitoring disabled. The default error threshold is 100. The default interval is 60.

Command Types

Switch command

Command Modes

Privileged

Usage Guidelines

To disable soft error exceeded traps, set the interval int_num value to zero. Without traps, soft errors can still be monitored through the console.

Examples

This example shows how to enable the collection of soft error statistics for port 10 on module 3:

Console> (enable) set station softerror 3/10 enable

Port 3/10 soft error monitoring enabled.

Console> (enable)

This example sets the error threshold to 100 and the sampling interval to 200 for port 10 on module 3:

Console> (enable) set station softerror 3/10 threshold 100 interval 200

Port 3/10 station soft error threshold set to 100, interval set to 200

Console> (enable)

Related Commands

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

set summertime

Use the set summertime command to specify whether the system should set the clock ahead one hour during daylight saving time.

set summertime {enable | disable} [zone]

set summertime recurring [{week} {day} {month} {hh:mm} {week | day | month | hh:mm} [offset]]

set summertime date {month} {date} {year} {hh:mm}{month | date | year | hh:mm}
[offset]

Syntax Description

enable	Keyword to cause the system to set the clock ahead one hour during daylight saving time.
disable	Keyword to prevent the system from setting the clock ahead one hour during daylight saving time.
zone	(Optional) Time zone used by the set summertime command.
recurring	Keyword to specify the summertime dates which recur every year.
week	Week of the month (first, second, third, fourth, last, 1...5).
day	Day of the week (Sunday, Monday, Tuesday, and so forth).
month	Month of the year (January, February, March, and so forth).
hh:mm	Hours and minutes.
offset	(Optional) Amount of offset in minutes (1 to 1440 minutes).
date	Day of the month (1 to 31).
year	Number of the year (1993 to 2035).

Defaults

By default, the set summertime command is disabled. When the command is enabled, the default for offset is 60 minutes, following U.S. standards.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

When you enter the clear config command, the dates and times are set back to the default.

Unless otherwise configured, this command advances the clock one hour at 2:00 a.m. on the first Sunday in April and moves back the clock one hour at 2:00 a.m. on the last Sunday in October.

Examples

This example shows how to cause the system to set the clock ahead one hour during daylight saving time:

Console> (enable) set summertime enable PDT

Summertime is enabled and set to "PDT".

Console> (enable)

This example shows how to prevent the system from setting the clock ahead one hour during daylight saving time:

Console> (enable) set summertime disable

Summertime disabled.

Console> (enable)

This example shows how to set daylight saving time to zonename "AUS," repeat every year, starting from the third Monday of February at noon and ending at the second Saturday of August at
3:00 p.m. with an offset of 30 minutes:

Console> (enable) set summertime recurring 3 Mon Feb 03:00 4 Thursday oct 08:00 500

Command authorization none.

Summertime is enabled and set to '' 

   start: Mon Feb 21 2000, 03:00:00

   end:   Fri Oct 20 2000. 08:00:00

   offset: 1..1440 minutes (default 60)	

   Recurring: yes, starting at 03:00:00am of third Monday of February and ending on 
08:00am of fourth Thursday of October.

Console> (enable)

This example shows how to set the daylight saving time to start on January 29, 1999 at 2:00 a.m. and end on August 19, 2004 at 3:00 p.m. with an offset of 30 minutes:

Console> (enable) set summertime date jan 29 1999 02:00 aug 19 2004 15:00 30 

Summertime is disabled and set to ''

Start : Fri Jan 29 1999, 02:00:00

End   : Thu Aug 19 2004, 15:00:00

Offset: 30 minutes

Recurring: no

Console> (enable) 

Related Commands

show summertime

set system baud

Use the set system baud command to set the console port baud rate.

set system baud rate

Syntax Description

rate	Baud rate. Valid rates are 600, 1200, 2400, 4800, 9600, 19200, and 38400.

Defaults

The default value is 9600 baud.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to set the system baud rate to 19200:

Console> (enable) set system baud 19200

System console port baud rate set to 19200.

Console> (enable) 

Related Commands

show system

set system contact

Use the set system contact command to identify a contact person for the system.

set system contact [contact_string]

Syntax Description

contact_string

(Optional) Text string that contains the name of the person to contact for system administration. If no contact string is specified, the system contact string is cleared.

Defaults

The default configuration has no system contact configured.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to set the system contact string:

Console> (enable) set system contact Xena ext.24

System contact set.

Console> (enable) 

Related Commands

show system

set system core-dump

Use the set system core-dump command to enable or disable the core dump feature.

set system core-dump {enable | disable}

Syntax Description

enable	Keyword to enable the core dump feature.
disable	Keyword to disable the core dump feature.

Defaults

The default is disabled.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

The core dump feature generates a report of images when your system fails due to a software error. The core image is stored in the file system. From this file, you can examine an error condition of a process when it is terminated due to an exception.

The size of the file system depends on the memory card size. The core dump file generated is proportional to the size of the system DRAM. Make sure that you have enough memory available to store the core dump file.

In order to maintain the core dump image, the yield CPU is disabled during the core dump process. You should have a standby supervisor engine installed to take over normal operations. If the switch has a redundant supervisor engine setup, the standby supervisor engine takes over automatically before the core dump occurs. The previously active supervisor engine resets itself after the core dump completes.

Examples

This example shows how to enable the core dump feature:

Console> (enable) set system core-dump enable

Have all GDB breakpoints been deleted (y/n) [n]?y

(1) In the event of a system crash, this feature will

     cause a core file to be written out.

(2) Core file generation may take up to 20 minutes.

(3) Selected core file is slot0:crash.hz

(4) Please make sure the above device has been installed,

    and ready to use

Core-dump enabled

Console> (enable) 

This example shows how to disable the core dump feature:

Console> (enable) set system core-dump disable

Core-dump disabled

Console> (enable)

Related Commands

set system core-file

set system core-file

Use the set system core-file command to specify the core image filename.

set system core-file {device:[filename]}

Syntax Description

device	Device where the core image file resides; valid values are bootflash and slot0.
filename	(Optional) Name of the core image file.

Defaults

The default filename is "crashinfo."

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

A device name check is performed when you enter the set system core-file command. If a valid device name is not found, an error message displays.

When a core dump occurs, the actual file written out will append the date to the filename in this format: _{yymmdd}-{hhmmss}.

Examples

This example shows how to use the default core image filename:

Console> (enable) set system core-file bootflash:

Attach default filename crashinfo to the device

System core-file set.

Console> (enable)

This example shows how to set the core image filename:

Console> (enable) set system core-file slot0:abc

System core-file set.

Console> (enable)

Related Commands

set system core-dump

set system countrycode

Use the set system countrycode command to specify the country where the system is physically located.

set system countrycode code

Syntax Description

code	Country code; see the "Usage Guidelines" section for format information.

Defaults

The default is US (United States).

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

The country code is a two-letter country code obtained from the ISO-3166 standard (for example, VA=Holy See (Vatican City State), VU=Vanuatu, and TF=French Southern Territories).

Examples

This example shows how to set the system country code:

Console> (enable) set system countrycode US

Country code is set to US.

Console> (enable) 

set system location

Use the set system location command to identify the location of the system.

set system location [location_string]

Syntax Description

location_string

(Optional) Text string to indicate where the system is located. If no location string is specified, the system location is cleared.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to set the system location string:

Console> (enable) set system location Closet 230 4/F

System location set.

Console> (enable)

Related Commands

show system

set system modem

Use the set system modem command to enable or disable modem control lines on the console port.

set system modem {enable | disable}

Syntax Description

enable	Keyword to activate modem control lines on the console port.
disable	Keyword to deactivate modem control lines on the console port.

Defaults

The default configuration has modem control lines disabled.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to enable modem control lines on the console port:

Console> (enable) set system modem enable

Modem control lines enabled on console port.

Console> (enable) 

This example shows how to disable modem control lines on the console port:

Console> (enable) set system modem disable

Modem control lines disabled on console port.

Console> (enable) 

Related Commands

show system

set system name

Use the set system name command to configure a name for the system.

set system name [name_string]

Syntax Description

name_string

(Optional) Text string to identify the system.

Defaults

The default configuration has no system name configured.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

In Catalyst 5000 family software release 4.1(1) and later, if you use the set system name command to assign a name to the switch, the switch name is used as the prompt string. However, if you specify a different prompt string using the set prompt command, that string is used for the prompt. If no name is specified, the system name is cleared.

In Catalyst 5000 family software release 4.1(1) and later, if you do not specify a system name, the system name is cleared, and a DNS lookup is initiated for a system name. If a name is found, that is the name used; if no name is found, no name is designated.

The system name can be 255 characters long, and the prompt can be 20 characters long. The system name is truncated appropriately when used as a prompt; a greater-than symbol (>) is appended to the truncated system name. If the system name was found from a DNS lookup, it is truncated to remove the domain name. If the prompt is obtained using the system name, it is updated whenever the system name changes. You can overwrite this prompt any time by setting the prompt manually. Any change in the prompt is reflected in all current open sessions.

Examples

This example shows how to set the system name to Information Systems:

Console> (enable) set system name Information Systems

System name set.

Console> (enable) 

Related Commands

set prompt
show system

set tacacs attempts

Use the set tacacs attempts command to configure the maximum number of login attempts allowed to the TACACS+ server.

set tacacs attempts count

Syntax Description

count

Number of login attempts allowed (1 to 10).

Defaults

The default value for this command is 3.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to configure the TACACS+ server to allow a maximum of six login attempts:

Console> (enable) set tacacs attempts 6

Tacacs number of attempts set to 6.

Console> (enable) 

Related Commands

show tacacs

set tacacs directedrequest

Use the set tacacs directedrequest command to enable or disable the TACACS+ directed-request feature. When enabled, you can direct a request to any of the configured TACACS+ servers and only the username is sent to the specified server.

set tacacs directedrequest {enable | disable}

Syntax Description

enable	Keyword to send the portion of the address before the @ sign (the username) to the host specified after the @ sign.
disable	Keyword to send the entire address string to the default TACACS+ server.

Defaults

This default configuration has the TACACS+ directed-request option disabled.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

When tacacs directedrequest is enabled, you must specify a configured TACACS+ server after the @ sign. If the specified host name does not match the IP address of a configured TACACS+ server, the request is rejected. When tacacs directedrequest is disabled, the Catalyst 5000 family switch queries the list of servers beginning with the first server in the list and then sends the entire string, accepting the first response from the server. This command is useful for sites that have developed their own TACACS+ server software to parse the entire address string and make decisions based on the contents of the string.

Examples

This example shows how to enable the TACACS+ directed-request feature:

Console> (enable) set tacacs directedrequest enable

Tacacs direct request has been enabled.

Console> (enable) 

Related Commands

show tacacs

set tacacs key

Use the set tacacs key command to set the key for TACACS+ authentication and encryption.

set tacacs key key

Syntax Description

key	Printable ASCII characters used for authentication and encryption. Key length must be less than 100 characters.

Defaults

The default value of key is null.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

The key must be the same as the key used on the TACACS+ server. All leading spaces are ignored. Spaces within the key and at the end of the key are included. Double quotation marks are not required, even if there are spaces between words in the key, unless the quotation marks themselves are part of the key. The key can consist of any printable ASCII characters except the tab character.

Examples

This example shows how to set the authentication and encryption key:

Console> (enable) set tacacs key Who Goes There

The tacacs key has been set to Who Goes There.

Console> (enable) 

Related Commands

clear tacacs key
show tacacs

set tacacs server

Use the set tacacs server command to define a TACACS+ server.

set tacacs server ip_addr [primary]

Syntax Description

ip_addr	IP address of the server on which the TACACS+ server resides.
primary	(Optional) Keyword to designate the specified server as the primary TACACS+ server.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

You can configure a maximum of three servers. The primary server, if configured, is contacted first. If no primary server is configured, the first server configured becomes the primary server.

Examples

This example shows how to configure the server on which the TACACS+ server resides and to designate it as the primary server:

Console> (enable) set tacacs server 170.1.2.20 primary

170.1.2.20 added to TACACS server table as primary server.

Console> (enable) 

Related Commands

clear tacacs key
show tacacs

set tacacs timeout

Use the set tacacs timeout command to set the response timeout interval for the TACACS+ server daemon. The TACACS+ server must respond to a TACACS+ authentication request before this interval expires or the next configured server is queried.

set tacacs timeout seconds

Syntax Description

seconds

Timeout response interval in seconds (1 to 255).

Defaults

The default value for this command is 5 seconds.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to set the response timeout interval for the TACACS+ server to 8 seconds:

Console> (enable) set tacacs timeout 8

Tacacs timeout set to 8 seconds.

Console> (enable)

Related Commands

show tacacs

set test diaglevel

Use the set test diaglevel command to set the level of packet buffer testing.

set test diaglevel {complete | minimal | bypass}

Syntax Description

complete	Keyword to specify complete packet buffer testing.
minimal	Keyword to specify minimal packet buffer testing.
bypass	Keyword to specify to bypass packet buffer testing.

Defaults

The default is minimal diagnostics. See the "Usage Guidelines" section for more information about the three diagnostic levels.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Setting the diagnostic level determines the level of testing that occurs when the system or module is reset. The three levels are as follows:

•complete—This level runs all tests.

•minimal—This level runs only EARL tests for the supervisor engine and loopback tests for all ports in the system.

•bypass—This level skips all tests.

---

Note Although the default is minimal, we recommend that you set the diagnostic level at complete.

---

Examples

This example shows how to set the packet buffer testing level to complete:

Console> (enable) set test diaglevel complete

Diagnostic level set to complete.

Console> (enable) 

This example shows how to set the packet buffer testing level to minimal:

Console> (enable) set test diaglevel minimal 

Diagnostic level set to minimal.

Console> (enable) 

This example shows how to set the packet buffer testing level to bypass:

Console> (enable) set test diaglevel bypass 

Diagnostic level set to bypass.

Console> (enable) 

Related Commands

set test packetbuffer
show test
test packetbuffer

set test packetbuffer

Use the set test packetbuffer command to schedule packet buffer tests on a regular basis.

set test packetbuffer {enable | disable}

set test packetbuffer {day_of_week} {hh:mm | continuous}

Syntax Description

enable	Keyword to enable packet buffer testing.
disable	Keyword to disable packet buffer testing.
day_of_week	Day to test packet buffers; valid days are Monday through Sunday.
hh:mm	Time to start packet buffer testing in hours:minutes format.
continuous	Keyword to specify continuous testing of packet buffers.

Defaults

A default pattern value of 0x55aa55aa55aa is used for complement.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

This command is supported on Catalyst 5000 family switches that have 100BASE-FX and 10/100BASE-TX Fast EtherChannel modules containing the Saint ASIC chip.

You can run packet buffer testing on both disabled and enabled ports. When a port is disabled, the testing is faster and more comprehensive because the port does not have user traffic passing through it.

User traffic continues to pass through an enabled port. When the port is enabled, the testing is slower and a small amount of data is lost. The majority of user traffic (more than 99.9%) is switched during testing. If data loss is unacceptable in your network environment, do not run packet buffer testing during operating hours.

For a disabled port, packet buffer testing takes up to one minute. For an enabled port, packet buffer testing takes up to one hour.

Clock adjustments affect packet buffer testing. If the internal clock moves past the scheduled test time (for example, when daylight savings time begins), the test may be skipped. Similarly, if the internal clock moves back before the scheduled test time (for example, when daylight savings time is over), the test may run twice.

---

Note To run a packet buffer test on a port immediately, use the test packetbuffer command.

---

Examples

This example shows how to enable packet buffer testing:

Console > (enable) set test packetbuffer enable

Packet buffer test enabled.

Console > (enable)

This example shows how to set packet buffer testing to occur weekly on Saturdays at 1:00 p.m.:

Console > (enable) set test packetbuffer sat 1:00

Packet buffer test will be run weekly on Saturdays at 01:00.

Console > (enable)

This example shows how to set packet buffer testing to occur daily at 6:00 p.m.:

Console > (enable) set test packetbuffer 18:00

Packet buffer test will be run daily at 18:00.

Console > (enable)

This example shows how to continously test packet buffers:

Console > (enable) set test packetbuffer continuous

Packet buffer test will be run continuously.

This example shows how to disable packet buffer testing:

Console > (enable) set test packetbuffer disable

Packet buffer test disabled.

Console > (enable)

Related Commands

set test diaglevel 
show test 
test packetbuffer

set time

Use the set time command to change the time of day on the system clock.

set time [day_of_week] [mm/dd/yyyy] [hh:mm:ss]

Syntax Description

day_of_week	(Optional) Day of the week.
mm/dd/yyyy	(Optional) Month, day, and year.
hh:mm:ss	(Optional) Current time in 24-hour format.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Examples

This example shows how to set the system clock to Sunday, March 21, 2000, 7:50 a.m:

Console> (enable) set time sun 3/21/2000 7:50

Sun Mar 21 2000, 07:50:00

Console> (enable)

Related Commands

show time

set timezone

Use the set timezone command to set the time zone for the system.

set timezone [zone_name] [hours [minutes]]

Syntax Description

zone_name	(Optional) Name of the time zone to be displayed.
hours	(Optional) Number of hours offset from UTC; valid values are -12 to 12.
minutes	(Optional) Number of minutes offset from UTC. If the specified hours value is a negative number, then the minutes value is assumed to be negative as well; valid values are 0 to 59.

Defaults

By default, the time zone is set to UTC.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

The set timezone command is effective only when NTP is running. If you set the time explicitly and NTP is disengaged, the set timezone command has no effect. If you have enabled NTP and have not entered the set timezone command, UTC is displayed by default.

Examples

This example shows how to set the time zone to Pacific Standard Time with an offset of minus 8 hours from UTC:

Console> (enable) set timezone PST -8

Timezone set to "PST", offset from UTC is -8 hours.

Console> (enable)

Related Commands

clear timezone
show timezone

set tokenring acbits

Use the set tokenring acbits command to specify whether AC bits are set unconditionally or conditionally when a port forwards certain LLC frames.

set tokenring acbits mod/port {enable | disable | sronly | never | always}

Syntax Description

mod/port	Number of the module and the port on the module.
enable	Keyword to unconditionally set the AC bits on source-routed frames with a RIF length greater than 2 and on all explorer frames, and to set the AC bits on all frames forwarded to another port.
disable	Keyword to specify that the AC bits be set based exclusively on whether the frame is forwarded to another port.
sronly	Keyword to specify that the AC bits be set only on source-routed frames with a RIF length greater than 2 and on all explorer frames.
never	Keyword to specify that the AC bits never be set on LLC frames.
always	Keyword to specify that the AC bits always be set on LLC frames.

Defaults

The default configuration when local address learning is enabled on a Token Ring port, the default is disable. When local address learning is disabled on a Token Ring port, the default is always.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

You can use the set tokenring acbits command to specify whether the AC bits should be set unconditionally on repeated source-routed LLC frames, which include source-routed frames with a RIF length greater than two and all Spanning Tree Explorer and All-Routes Explorer frames.

If you set this parameter to disable, the setting of these bits is based on whether the frame was actually forwarded. This parameter is only valid when local address learning is enabled on a port. Therefore, specifying disable automatically enables local address learning on the port.

The enable keyword is valid only when local address learning is enabled on a port. Therefore, specifying enable automatically enables local address learning on the port.

The always keyword is valid only when local address learning is disabled on a port. Therefore, specifying always automatically disables local address learning on the port.

The never keyword is valid only when local address learning is disabled on the port. Therefore, specifying never automatically disables local address learning on the port.

Examples

This example shows port 4 on module 4 is enabled to set unconditionally the AC bits when forwarding certain LLC frames:

Console> (enable) set tokenring acbits 4/4 enable

Port 4/4 acbits enabled.

Console> (enable) 

This example shows port 4 on module 4 is disabled to set conditionally the AC bits when forwarding certain LLC frames:

Console> (enable) set tokenring acbits 4/4 disable

Port 4/4 acbits disabled.

Console> (enable) 

This example shows how to set the AC bits to always be set on LLC frames on port 2 on module 3:

Console> (enable) set tokenring acbits 3/2 always

Warning: Disable Local learning: 3/2

Port 3/2 acbits always

Console> (enable) 

Related Commands

show tokenring

set tokenring configloss

Use the set tokenring configloss command to specify thresholds that cause the port to be administratively disabled when the thresholds are exceeded during the user-specified interval.

set tokenring configloss mod/port [threshold thresh_num] [interval int_num]

Syntax Description

mod/port	Number of the module and the port on the module.
threshold thresh_num	(Optional) Keyword and variable to set the threshold for configuration losses; valid values are from 1 to 100.
interval int_num	(Optional) Keyword to set the interval at which the configuration loss is measured; valid values are from 1 to 99 minutes.

Defaults

The default threshold configuration is 8; the default interval is 10.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

Configuration loss occurs when a port completes a connection, allows data traffic to flow, and subsequently closes. The configuration loss threshold is used to control the number of configuration losses that can occur within a specified time. When the threshold is exceeded, the port is disabled and you must enable it by using the set port enable command or an SNMP manager.

Examples

The following example shows how to set a configuration loss threshold of 25 and an interval of 5 minutes for port 1 on module 4:

Console> (enable) set tokenring configloss 4/1 threshold 25 interval 5

Port 4/1 configloss threshold set to 25, interval set to 5.

Console> (enable)

Related Commands

show tokenring

set tokenring distrib-crf

Use the set tokenring distrib-crf command to enable or disable distribution of TrCRF VLANs.

set tokenring distrib-crf {enable | disable}

Syntax Description