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This chapter contains the following sections:
Your software release might not support all the features documented in this module. For the latest caveats and feature information, see the Bug Search Tool at https://tools.cisco.com/bugsearch/ and the release notes for your software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the “New and Changed Information” chapter.
This section includes information about terminal settings and sessions.
The Cisco NX-OS software features allow you to manage the following characteristics of terminals:
The console port is an asynchronous serial port that allows you to connect to the device for initial configuration through a standard RS-232 port with an RJ-45 connector. Any device connected to this port must be capable of asynchronous transmission. You can configure the following parameters for the console port:
Configure your terminal emulator with 9600 baud, 8 data bits, 1 stop bit, and no parity.
A COM1 port is an RS-232 port with a DB-9 interface that enables you to connect to an external serial communication device such as a modem. You can configure the following parameters for the COM1 port:
Configure your terminal emulator with 9600 baud, 8 data bits, 1 stop bit, and no parity.
You can use virtual terminal lines to connect to your Cisco NX-OS device. Secure Shell (SSH) and Telnet create virtual terminal sessions. You can configure an inactive session timeout and a maximum sessions limit for virtual terminals.
The following table shows the licensing requirements for this feature:
Product |
License Requirement |
---|---|
Cisco NX-OS |
Terminal setting configuration requires no license. Any feature not included in a license package is bundled with the Cisco NX-OS system images and is provided at no extra charge to you. For a complete explanation of the Cisco NX-OS licensing scheme, see the Cisco NX-OS Licensing Guide. |
You can set the following characteristics for the console port:
Log in to the console port.
You can set the following characteristics for the COM1 port:
Log in to the console port or COM1 port.
This section describes how to configure virtual terminals on Cisco NX-OS devices.
You can configure a timeout for inactive virtual terminal sessions on a Cisco NX-OS device.
You can limit the number of virtual terminal sessions on your Cisco NX-OS device.
You can connect a modem to either the COM1 port or the console port.
We recommend that you use the COM1 port to connect the modem.
You must enable the modem connection on the port before you can use the modem.
Log in to the console port.
The Cisco NX-OS software provides a default initialization string that you can download for connecting with the modem. The default initialization string is ATE0Q1&D2&C1S0=1\015.
Log in to the console port.
Command or Action | Purpose | |||||||
---|---|---|---|---|---|---|---|---|
Step 1 |
configure terminal
Example: switch# configure terminal switch(config)# |
Enters global configuration mode. | ||||||
Step 2 | Enter one of the following commands:
Example: switch# line com1 switch(config-com1)# | |||||||
Step 3 |
modem init-string default
Example: switch(config-com1)# modem init-string default |
Writes the default initialization string to the modem. | ||||||
Step 4 |
exit
Example: switch(config-com1)# exit switch(config)# |
Exits COM1 or console configuration mode. | ||||||
Step 5 |
show line
Example: switch(config)# show line | (Optional)
Displays the COM1 and console settings. | ||||||
Step 6 |
copy running-config startup-config
Example: switch(config)# copy running-config startup-config | (Optional)
Copies the running configuration to the startup configuration. |
You can configure and download your own initialization when the default initialization string is not compatible with your modem.
Log in to the console port.
Command or Action | Purpose | |||||||
---|---|---|---|---|---|---|---|---|
Step 1 |
configure terminal
Example: switch# configure terminal switch(config)# |
Enters global configuration mode. | ||||||
Step 2 | Enter one of the following commands:
Example: switch# line com1 switch(config-com1)# | |||||||
Step 3 |
modem set-string user-input
string
Example: switch(config-com1)# modem set-string user-input ATE0Q1&D2&C1S0=3\015 |
Sets the user-specified initialization string for the COM1 or console port. The initialization string is alphanumeric and case sensitive, can contain special characters, and has a maximum of 100 characters.
| ||||||
Step 4 |
modem init-string user-input
Example: switch(config-com1)# modem init-string user-input |
Writes the user-specified initialization string to the modem connected to the COM1 or console port. | ||||||
Step 5 |
exit
Example: switch(config-com1)# exit switch(config)# |
Exits COM1 or console configuration mode. | ||||||
Step 6 |
show line
Example: switch(config)# show line | (Optional)
Displays the COM1 and console settings. | ||||||
Step 7 |
copy running-config startup-config
Example: switch(config)# copy running-config startup-config | (Optional)
Copies the running configuration to the startup configuration. |
If you connect a modem to a powered-up physical device, you must initialize the modem before you can use it.
After waiting until the Cisco NX-OS device has completed the boot sequence and the system image is running, connect the modem to either the COM1 port or the console port on the device.
Enable the modem connection on the port.
Command or Action | Purpose |
---|
You can clear terminal sessions on the Cisco NX-OS device.
Command or Action | Purpose |
---|
To display terminal and session information, perform one of the following tasks:
Command |
Purpose |
---|---|
show terminal |
Displays terminal settings. |
show line |
Displays the COM1 and console ports settings. |
show users |
Displays virtual terminal sessions. |
show running-config [all] |
Displays the user account configuration in the running configuration. The all keyword displays the default values for the user accounts. |
For detailed information about the fields in the output from these commands, see the Cisco Nexus command reference guide for your device.
Parameters |
Default |
---|---|
Default filesystem |
bootflash: |
Related Topic |
Document Title |
---|---|
Licensing |
Cisco NX-OS Licensing Guide |
Command reference |
Cisco Nexus 5000 Series Command Reference |