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logging message interface type ethernet description
L Commands
This chapter describes the Cisco NX-OS system management commands that begin with the letter L.
lldp holdtime
To configure the amount of time that a receiving device should hold the information sent by your device before discarding it, use the lldp holdtime command. To remove the hold time configuration, use the no form of this command.
lldp holdtime seconds
Syntax Description
Defaults
120 seconds
Command Modes
Global configuration (config)
Supported User Rolesnetwork-admin
network-operator
vdc-admin
vdc-operatorCommand History
Usage Guidelines
Make sure that you are in the correct virtual device context (VDC). To switch VDCs, use the switchto vdc command.
This command does not require a license.
Examples
This example shows how to configure the Link Layer Discovery Protocol (LLDP) hold time:
switch(config)# lldp holdtime 180switch(config)#This example shows how to remove the LLDP hold time configuration:switch(config)# no lldp holdtime 180switch(config)#Related Commands
lldp receive
To enable the reception of Link Layer Discovery Protocol (LLDP) packets on an interface, use the lldp receive command. To disable the reception of LLDP packets, use the no form of this command.
lldp receive
no lldp receive
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Interface configuration
Supported User Rolesnetwork-admin
network-operator
vdc-admin
vdc-operatorCommand History
Usage Guidelines
Make sure that you are in the correct virtual device context (VDC). To switch VDCs, use the switchto vdc command.
Make sure that you have globally enabled LLDP on the device.
This command does not require a license.
Examples
This example shows how to enable the reception of LLDP packets on an interface:
switch(config)# interface ethernet 6/3switch(config-if)# lldp receiveswitch(config-if)# exitswitch(config)#This example shows how to disable the reception of LLDP packets on an interface:
switch(config)# interface ethernet 6/3switch(config-if)# no lldp receiveswitch(config-if)# exitswitch(config)#Related Commands
lldp transmit
Enables the transmission of LLDP packets on an interface.
show lldp interface ethernet
Displays the LLDP configuration on an interface.
lldp reinit
To configure the delay time for the Link Layer Discovery Protocol (LLDP) to initialize on any interface, use the lldp reinit command. To remove the LLDP initialization configuration, use the no form of this command.
lldp reinit seconds
Syntax Description
Defaults
2 seconds
Command Modes
Global configuration (config)
Supported User Rolesnetwork-admin
network-operator
vdc-admin
vdc-operatorCommand History
Usage Guidelines
Make sure that you are in the correct virtual device context (VDC). To switch VDCs, use the switchto vdc command.
This command does not require a license.
Examples
This example shows how to configure the delay time for LLDP initialization:
switch(config)# lldp reinit 6switch(config)#This example shows how to remove the LLDP initialization configuration:switch(config)# no lldp reinit 6switch(config)#Related Commands
lldp timer
To configure the transmission frequency of Link Layer Discovery Protocol (LLDP) updates, use the lldp timer command. To remove the transmission frequency configuration for LLDP updates, use the no form of this command.
lldp timer seconds
Syntax Description
Defaults
30 seconds
Command Modes
Global configuration (config)
Supported User Rolesnetwork-admin
network-operator
vdc-admin
vdc-operatorCommand History
Usage Guidelines
Make sure that you are in the correct virtual device context (VDC). To switch VDCs, use the switchto vdc command.
This command does not require a license.
Examples
This example shows how to configure the transmission frequency for LLDP updates:
switch(config)# lldp timer 45switch(config)#This example shows how to remove the transmission frequency configuration for LLDP updates:switch(config)# no lldp timer 45switch(config)#Related Commands
lldp tlv-select
To configure the type, length, and value (TLV) descriptions to send and receive in Link Layer Discovery Protocol (LLDP) packets, use the lldp tlv-select command. To remove the TLV configuration, use the no form of this command.
lldp tlv-select [dcbxp | management-address | port-description | port-vlan | system-capabilities | system-description | system-name]
no lldp tlv-select [dcbxp | management-address | port-description | port-vlan | system-capabilities | system-description | system-name]
Syntax Description
Defaults
By default, all available TLVs are enabled.
Command Modes
Global configuration (config)
Supported User Rolesnetwork-admin
network-operator
vdc-admin
vdc-operatorCommand History
Usage Guidelines
Make sure that you are in the correct virtual device context (VDC). To switch VDCs, use the switchto vdc command.
This command does not require a license.
Examples
This example shows how to enable the system capabilities TLV:
switch(config)# lldp tlv-select system-capabilitiesswitch(config)#This example shows how to disable the system capabilities TLV:switch(config)# no lldp tlv-select system-capabilitiesswitch(config)#Related Commands
show lldp tlv-select
Displays the LLDP TLV configuration.
show lldp dcbx interface ethernet
Displays the local DCBX control status.
lldp transmit
To enable the transmission of Link Layer Discovery Protocol (LLDP) packets on an interface, use the lldp transmit command. To disable the transmission of LLDP packets, use the no form of this command.
lldp transmit
no lldp transmit
Syntax Description
This command has no arguments or keywords.
Defaults
Enabled
Command Modes
Interface configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
Make sure that you are in the correct virtual device context (VDC). To switch VDCs, use the switchto vdc command.
Make sure that you have globally enabled the LLDP on the device.
This command does not require a license.
Examples
This example shows how to enable the transmission of LLDP packets on an interface:
switch(config)# interface ethernet 7/1switch(config-if)# lldp transmitswitch(config-if)# exitswitch(config)#This example shows how to disable the transmission of LLDP packets on an interface:
switch(config)# interface ethernet 7/1switch(config-if)# no lldp transmitswitch(config-if)# exitswitch(config)#Related Commands
lldp receive
Enables the reception of LLDP packets on an interface.
show lldp interface ethernet
Displays the LLDP configuration on an interface.
locator-led
To blink an LED on the system, use the locator-led command. To restore the default LED state, use the no form of this command.
locator-led {chassis | fan f-number | module slot | powersupply ps-number | xbar x-number}
no locator-led{chassis | fan f-number | module slot | powersupply ps-number | xbar x-number}
Syntax Description
Defaults
None
Command Modes
Any command mode
Supported User Rolesnetwork-admin
network-operator
vdc-admin
vdc-operatorCommand History
Usage Guidelines
Use the locator-led command to flash the LED on a component in the system. You can use this blinking LED to identify the component to an administrator in the data center.
This command does not require a license.
Examples
This example shows how to blink the LED for module 4:
switch# locator-led module 4Related Commands
logging console
To enable logging messages to the console session, use the logging console command. To disable logging messages to the console session, use the no form of this command.
logging console [severity-level]
no logging console
Syntax Description
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command does not require a license.
Examples
This example shows how to enable logging messages with a severity level of 4 (warning) or higher to the console session:
switch# configure terminalswitch(config)# logging console 4switch(config)#Related Commands
logging event
To log interface events, use the logging event command.
logging event {link-status | trunk-status} {enable | default}
no logging event {link-status | trunk-status} {enable | default}
Syntax Description
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command does not require a license.
Examples
This example shows how to log interface events:
switch# configure terminalswitch(config)# logging event link-status defaultswitch(config)#Related Commands
logging ip access-list cache
To configure the Optimized ACL Logging (OAL) parameters, use the logging ip access-list cache command. To reset to the default settings, use the no form of this command.
logging ip access-list cache {{entries num_entries} | {interval seconds} | {threshold num_packets}}
no logging ip access-list cache {{entries num_entries} | {interval seconds} | {threshold num_packets}}
Syntax Description
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command does not require a license.
Examples
This example shows how to to specify the maximum number of log entries that are cached in the software:
switch# configure terminalswitch(config)# logging ip access-list cache entries 200switch(config)#This example shows how to specify the maximum time interval before an entry is sent to the system log:
switch# configure terminalswitch(config)# logging ip access-list cache interval 350switch(config)#This example shows how to specify the number of packet matches before an entry is sent to the system log:
switch# configure terminalswitch(config)# logging ip access-list cache threshold 125switch(config)#Related Commands
logging level
To enable logging messages from the defined facility that have the specified severity level or higher, use the logging level command. To disable logging messages from the defined facility, use the no form of this command.
logging level facility severity-level
no logging level facility severity-level
Syntax Description
facility
Appropriate facility. The facilities are listed in the "System Message Logging Facilities" section on page 659.
To apply the same severity level to all facilities, use the all facility.
severity-level
Number of the desired severity level at which messages should be logged. Messages at or numerically lower than the specified level are logged. Severity levels are as follows:
•
0—emergency: System unusable
•
•
•
•
•
•
•
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command does not require a license.
Examples
This example shows how to enable logging messages from the AAA facility that have a severity level of 2 or higher:
switch# configure terminalswitch(config)# logging level aaa 2switch(config)#Related Commands
logging logfile
To configure the name of the log file used to store system messages and the minimum severity level to log, use the logging logfile command. To disable logging to the log file, use the no form of this command.
logging logfile logfile-name severity-level [size bytes]
no logging logfile logfile-name severity-level [size bytes]
Syntax Description
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command does not require a license.
Examples
This example shows how to configure a log file called logfile to store system messages and set its severity level to 4:
switch# configure terminalswitch(config)# logging logfile logfile 4switch(config)#Related Commands
logging message interface type ethernet description
To add the description for physical Ethernet interfaces and subinterfaces in the system message log, use the logging message interface type ethernet description command. To disable the printing of the interface description for physical Ethernet interfaces in the system message log, use the no form of this command.
logging message interface type ethernet description
no logging message interface type ethernet description
Syntax Description
This command does not have any arguments or password.
Defaults
None
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
Make sure that you are in the correct VDC. To change the VDC, use the switchto vdc command.
This command does not require a license.
Examples
This example shows how to add the description for physical Ethernet interfaces and subinterfaces in the system message log:
switch# configure terminalswitch(config)# logging message interface type ethernet descriptionThis example shows how to disable the printing of the interface description for physical Ethernet interfaces in the system message log:
switch# configure terminalswitch(config)# no logging message interface type ethernet descriptionRelated Commands
logging monitor
Enables the device to log messages to the monitor based on a specified severity level or higher.
show logging monitor
Displays the monitor logging configuration.
logging module
To enable module log messages, use the logging module command. To disable module log messages, use the no form of this command.
logging module [severity-level]
no logging module
Syntax Description
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command does not require a license.
Examples
This example shows how to enable module log messages:
switch# configure terminalswitch(config)# logging moduleswitch(config)#Related Commands
logging monitor
To log messages to the monitor (terminal line), use the logging monitor command to enable the device.
To disable monitor log messages, use the no form of this command.
logging monitor [severity-level]
no logging monitor
Syntax Description
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This configuration applies to Telnet and SSH sessions.
This command does not require a license.
Examples
This example shows how to enable monitor log messages:
switch# configure terminalswitch(config)# logging monitorswitch(config)#Related Commands
logging server
To configure a remote syslog server at the specified hostname or IPv4/IPv6 address, use the logging server command. To disable the remote syslog server, use the no form of this command.
logging server host [severity-level [use-vrf VRF_name [facility {auth | authpriv | cron | daemon | ftp | kernel | local0 | local1 | local2 | local3 | local4 | local5 | local6 | local7 | lpr | mail | news | syslog | user | uucp}]]]
no logging server host
Syntax Description
host
Hostname or IPv4/IPv6 address of the remote syslog server.
severity-level
(Optional) Number of the desired severity level at which messages should be logged. Messages at or numerically lower than the specified level are logged. Severity levels are as follows:
•
•
•
•
•
•
•
•
use-vrf VRF_name
(Optional) Specifies the VPN routing and forwarding (VRF) instance. In Cisco NX-OS Release 4.2 or later releases, the default VRF is default.
facility facility
(Optional) Specifies the outgoing facility. The facilities are listed in the "System Message Logging Facilities" section on page 659. The default outgoing facility is local7.
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command does not require a license.
Examples
This example shows how to configure a remote syslog server at a specified IPv4 address using the default outgoing facility:
switch# configure terminalswitch(config)# logging server 172.28.254.253switch(config)#This example shows how to configure a remote syslog server at a specified hostname with severity level 5 or higher:
switch# configure terminalswitch(config)# logging server syslogA 5switch(config)#Related Commands
logging source-interface
To enable a source interface for the remote syslog server, use the logging source-interface command.
To disable the source interface, use the no form of this command.
logging source-interface loopback virtual_interface
no logging source-interface loopback virtual_interface
Syntax Description
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command does not require a license.
Examples
This example shows how to enable a source interface for the syslog server:
switch# configure terminalswitch(config)# logging source-interface loopback 5switch(config)#logging timestamp
To set the logging time stamp units, use the logging timestamp command. To reset the logging timestamp units to the default, use the no form of this command.
logging timestamp {microseconds | milliseconds | seconds}
no logging timestamp {microseconds | milliseconds | seconds}
Syntax Description
Defaults
None
Command Modes
Global configuration
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command does not require a license.
Examples
This example shows how to set the logging time stamp units to microseconds:
switch# configure terminalswitch(config)# logging timestamp microsecondsswitch(config)#Related Commands