4.1.2 Operation terminal
The following table describes the differences in the scope of operation and administration for consoles 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 |
ZMODEM protocol |
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: 9600 bit/s
-
Data size: 8 bits
-
Parity bit: None
-
Stop bit: 1 bit
-
Flow Control: None
If you want to use the console with a communication speed other than 9600 bit/s (1200, 2400, 4800, or 19200 bit/s), change the communication speed on the Switch side using the speed configuration command. The new setting takes effect after you log out from the console.
(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 settings other than 9600 bit/s, invalid characters appear after starting (or restarting) the device until the new configuration is enabled in the system.
-
(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.