E Commands
This chapter describes the Cisco Nexus 1000V commands that begin with the letter E.
echo
To echo an argument back to the terminal screen, use the echo command.
echo [backslash-interpret] [text]
Syntax Description
Defaults
Displays a blank line.
Command Modes
Any
network-admin
Command History
|
|
---|---|
4.0(4)SV1(1) |
This command was introduced. |
Usage Guidelines
You can use this command in a command script to display information while the script is running.
Table 1 lists the formatting keywords that you can insert in the text when you include the -e or backslash-interpret keyword.
Examples
This example shows how to display a blank line at the command prompt:
n1000v# echo
This example shows how to display a line of text at the command prompt:
n1000v# echo Script run at $(TIMESTAMP).
Script run at 2008-08-12-23.29.24.
This example shows how to use a formatting option in the text string:
n1000v# echo backslash-interpret This is line #1. \nThis is line #2.
This is line #1.
This is line #2.
Related Commands
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run-script |
Runs command scripts. |
end
To exit a configuration mode and return to Privileged EXEC mode, use the end command.
end
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any
network-admin
network-operator
Command History
|
|
---|---|
4.0(4)SV1(1) |
This command was introduced. |
Usage Guidelines
This command differs from the exit command in that the exit command returns you to the configuration mode you were previously in. The end command always takes you completely out of configuration mode and places you in privileged EXEC mode.
Examples
This example shows how to end the session in Global Configuration mode and return to privileged EXEC mode:
n1000v(config)# end
n1000v#
This example shows how to end the session in Interface Configuration mode and return to privileged EXEC modee:
n1000v(config-if)# end
n1000v#
Related Commands
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exit |
Exits the current command mode and returns you to the previous command mode. |
errdisable detect cause
To start detection of the cause for any interface to be error-disabled, use the errdisable detect cause command. To return to the default setting, use the no version of this command. To restore the default setting, use the default form of this command.
errdisable detect cause {all | arp-inspection | dhcp-rate-limit | link-flap | loopback}
no errdisable detect cause {all | arp-inspection | dhcp-rate-limit | link-flap | loopback}
default errdisable detect cause {all | arp-inspection | dhcp-rate-limit | link-flap | loopback}
Syntax Description
Command Default
Disabled
Command Modes
Global configuration (config)
network-admin
Command History
|
|
---|---|
4.0(4)SV1(2) |
This command was introduced. |
Usage Guidelines
Use the errdisable detect cause command to enable error detection for an application.
The error-disabled state is an operational state that is similar to the link-down state. You must enter the shutdown command and then the no shutdown command to recover an interface manually from the error-disabled state.
Examples
This example shows how to detect the cause of the error-disabled state for all applications:
n1000v(config)# errdisable detect cause all
n1000v(config)#
Related Commands
errdisable recovery cause
To enable the automatic recovery from the error-disabled (errdisable) state for an application, use the errdisable recovery cause command. To return to the default setting, use the no version of this command. To restore the default setting, use the default form of this command.
errdisable recovery cause {all | arp-inspection | bpduguard | dhcp-rate-limit | link-flap | failed-port-state | psecure-violation | security-violation | storm-control | udld | vpc-peerlink}
no errdisable recovery cause {all | arp-inspection | bpduguard | dhcp-rate-limit | link-flap | psecure-violation | security-violation | storm-control | udld | vpc-peerlink}
default errdisable recovery cause {all | arp-inspection | bpduguard | dhcp-rate-limit | link-flap | psecure-violation | security-violation | storm-control | udld | vpc-peerlink}
Syntax Description
Command Default
Disabled
Command Modes
Global configuration (config)
network-admin
Command History
|
|
---|---|
4.0(4)SV1(2) |
This command was introduced. |
Usage Guidelines
Use the errdisable recovery cause command to enable automatic recovery on the interface from the error-disabled state for an application. This command tries to bring the interface out of the error-disabled state and retry operation once all the causes have timed out. The interface automatically tries to come up again after 300 seconds. To change this interval, use the errdisable recovery interval command.
Examples
This example shows how to automatically recover from the error-disabled state for link flapping after you have enabled the recovery timer:
n1000v(config)# errdisable recovery cause link-flap
n1000v(config)#
Related Commands
|
|
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errdisable recovery interval |
Enables the recovery timer. |
show interface status err-disabled |
Displays the interface error-disabled state. |
errdisable recovery interval
To enable the recovery timer, use the errdisable recovery interval command.
errdisable recovery interval interval
Syntax Description
interval |
Error detection for access-list installation failures. The range is from 30 to 65535. |
Command Default
300 seconds
Command Modes
Global configuration (config)
network-admin
Command History
|
|
---|---|
4.0(4)SV1(2) |
This command was introduced. |
Usage Guidelines
Use the errdisable recovery interval command to configure the recovery timer.
Examples
This example shows how to configure the recovery timer:
n1000v(config)# errdisable recovery interval 32
n1000v(config)#
Related Commands
|
|
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errdisable recovery cause |
Enables the error-disabled recovery for an application. |
show interface status err-disabled |
Displays the interface error-disabled state. |
erspan-id
To add an Encapsulated Remote Switch Port Analyzer (ERSPAN) ID to the session configuration and save it in the running configuration, use the erspan-id command.
erspan-id flow_id
Syntax Description
flow_id |
Flow ID to be assigned to the ERSPAN session. The range is 1-1023. |
Defaults
None
Command Modes
CLI ERSPAN source configuration (config-erspan-src)
network-admin
Command History
|
|
4.0(4)SV1(1) |
This command was introduced. |
Usage Guidelines
The session ERSPAN ID is added to the ERSPAN header of the encapsulated frame and can be used at the termination box to differentiate between various ERSPAN streams of traffic.
Examples
This example shows how to add ERSPAN ID 51 to the session configuration and save it in the running configuration:
n1000v# config t
n1000v(config)# monitor session type erspan-source
n1000v(config-erspan-src)# erspan_id 51
n1000v(config-erspan-src)#
Related Commands
exec-timeout
To configure the length of time, in minutes, that an inactive Telnet or SSH session remains open before it is automatically shut down, use the exec-timeout command. To remove an exec timeout setting, use the no form of this command.
exec-timeout time
no exec-timeout [time]
Syntax Description
time |
Timeout time, in minutes. The range of valid values is 0 to 525600. If a session remains inactive longer than this specified time period, then it is automatically closed. |
Defaults
No timeout is configured.
Command Modes
Console configuration (config-console)
network-admin
Command History
|
|
4.0(4)SV1(1) |
This command was introduced. |
Usage Guidelines
When you set time to 0, exec timeout is disabled.
Examples
This example shows how to configure an inactive session timeout for the console port:
n1000v# configure terminal
n1000v(config)# line console
n1000v(config-com1)# exec-timeout 20
This example shows how to configure an inactive session timeout for the virtual terminal:
n1000v# configure terminal
n1000v(config)# line vty
n1000v(config-line)# exec-timeout 20
This example shows how to remove an exec timeout on the console port:
n1000v(
config)# configure terminal
DocTeamVSM(config)# line console
n1000v(
config-console)#
no exec-timeout
n1000v(
config-console)#
Related Commands
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|
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show terminal |
Displays the terminal configuration, including the timeout value. |
show users |
Displays the currently active user sessions. |
exit
To exit a configuration mode or exit the CLI, use the exit command.
exit
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Any
network-admin
network-operator
Command History
|
|
---|---|
4.0(4)SV1(1) |
This command was introduced. |
Examples
This example shows how to exit global configuration mode. The CLI returns you to the EXEC mode.
n1000v(config)# exit
n1000v#
This example shows how to exit interface configuration mode. The CLI returns you to the global configuration mode.
n1000v(config-if)# exit
n1000v(config)#
This example shows how to exit the CLI.
n1000v# exit
Related Commands
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end |
Returns to the EXEC command mode. |
exporter
To add an existing flow exporter to a specific flow monitor and save it in the running configuration, use the exporter command. To remove the flow exporter for a specific flow monitor, use the no form of this command.
exporter name
no exporter name
Syntax Description
name |
Name of the flow exporter to be added for the flow monitor. |
Defaults
None
Command Modes
CLI flow monitor configuration (config-flow-monitor)
network-admin
Command History
|
|
4.0(4)SV1(1) |
This command was introduced. |
Examples
This example shows how to add the flow exporter called Exportv9 and save it in the running configuration:
n1000v# config t
n1000v(config)# flow monitor MonitorTest
n1000v(config-flow-monitor)# exporter Exportv9
n1000v(config-flow-monitor)#
This example shows how to remove the flow exporter called Exportv9:
n1000v# config t
n1000v(config)# flow monitor MonitorTest
n1000v(config-flow-monitor)# no exporter Exportv9
n1000v(config-flow-monitor)#