4.1.2 Operation terminal

The following table describes the differences in the scope of operation and administration for consoles and remote operation terminals.

Table 4-1: Differences in application ranges between the console and remote operation terminals
Functionality	Console	Remote operation terminal
Remote login	Not supported	Supported
Login from the Switch to an operation terminal	Not supported	Supported
Access control	No	Yes
Command input	Supported	Supported
File transfer protocol	No	ftp
IP communication	Not supported	IPv4 and IPv6
SNMP manager connection	Not supported	Supported
Configuration settings	Not required	Required

<Structure of this section>

(1) Console

The console is a terminal that connects to RS232C and can be used by common communication terminals and communication softwares. To enable communication between the console and the Switch, make sure that the following standard VT-100 settings (Switch defaults) are defined in the communication software:

Communication speed :115200 bit/s
Data size: 8 bits
Parity bit: None
Stop bit: 1 bit
Flow Control: None

If you want to set the communication speed to a value other than 115200bit/s (2400/4800/9600/19200bit/s), use the configuration command speed to change the communication speed setting on the Switch. The new setting takes effect after you log out from the console.

Figure 4-2: Example of setting the console communication speed
(config)# line console 0 (config-line)# speed 19200

To log in from the console to the switch being operated in stack mode, log in to a serially connected member switch. Log in to the master switch if serially connected to it. Log in to the backup switch if serially connected to it.

Notes

Keep the following in mind when using the console.

When you log in from the console, the Switch automatically acquires and sets the screen size using the VT-100 control characters. If the console does not support VT-100 emulation, the screen size cannot be obtained or set. Invalid character strings might appear or the first CLI prompt might be displayed incorrectly.

Note that the same problem occurs when you press a key as soon as you log in. This is because display results cannot be acquired for VT-100 control characters. If this happens, log in again.
The communication speed settings are enabled after logging out. Change the communication speed settings of the communication terminal and communication software you are using after logging out from the console. Until they are changed, some characters are displayed incorrectly (e.g. login prompt).
If the communication speed is set to a value other than the default setting, an invalid character string is displayed when the Switch is started (restarted) until the configuration is applied to the Switch.

(2) Remote operation terminal

Remote operation terminals connect to the Switch via an IP network and perform command operations. Terminals with telnet protocol or ssh protocol client functions can be used as remote operation terminals.

Notes: The Telnet server in the Switch recognizes CR as the line feed code. Some clients send CR and LF as the line feed code. If you connect to a switch from this type of terminal, problems will occur: Blank lines might appear, or nothing happens when you press the Y or N key in response to a prompt. If this is the case, check the client settings.