Information About Terminal Settings and Sessions
This section includes information about terminal settings and sessions.
Terminal Session Settings
The Cisco NX-OS software features allow you to manage the following characteristics of terminals:
- Terminal type
- Name used by Telnet when communicating with remote hosts
- Length
- Number of lines of command output displayed before pausing
- Width
- Number of characters displayed before wrapping the line
- Inactive session timeout
- Number of minutes that a session remains inactive before the device terminates it
Console Port
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:
- Data bits
- Specifies the number of bits in an 8-bit byte that is used for data.
- Inactive session timeout
- Specifies the number of minutes a session can be inactive before it is terminated.
- Parity
- Specifies the odd or even parity for error detection.
- Speed
- Specifies the transmission speed for the connection.
- Stop bits
- Specifies the stop bits for an asynchronous line.
Configure your terminal emulator with 9600 baud, 8 data bits, 1 stop bit, and no parity.
COM1 Port
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:
- Data bits
- Specifies the number of bits in an 8-bit byte that is used for data.
- Hardware flowcontrol
- Enables the flow-control hardware.
- Parity
- Specifies the odd or even parity for error detection.
- Speed
- Specifies the transmission speed for the connection.
- Stop bits
- Specifies the stop bits for an asynchronous line.
Configure your terminal emulator with 9600 baud, 8 data bits, 1 stop bit, and no parity.
Virtual Terminals
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.
Modem Support
You can connect a modem to the COM1 or console ports only on the supervisor 1 module. The following modems were tested on devices running the Cisco NX-OS software:
-
MultiTech MT2834BA (http://www.multitech.com/en_us/support/families/multimodemii/)
-
Hayes Accura V.92 (http://www.zoom.com/products/dial_up_external_serial.html#hayes)
![]() Note |
Do not connect a modem when the device is booting. Only connect the modem when the device is powered up. |
The Cisco NX-OS software has the default initialization string (ATE0Q1&D2&C1S0=1\015) to detect connected modems. The default string is defined as follows:
- AT
- Attention
- E0 (required)
- No echo
- Q1
- Result code on
- &D2
- Normal data terminal ready (DTR) option
- &C1
- Enable tracking the state of the data carrier
- S0=1
- Pick up after one ring
- \015 (required)
- Carriage return in octal