Configuring with a Telnet Console

An alternative configuration method is the Telnet method, and it is described in this chapter.

Telnet

Telnet is a remote terminal software to login to any remote telnet servers. It is typically installed in most of the operating systems. To use it, users open a command line terminal (e.g., cmd.exe for Windows Operating System). Note that only users with administrator (admin) access right as configured in Section 2.3 can use telnet to login to the device.

Telnet Log-in

After the command line terminal is opened, type in “telnet 192.168.2.1/24” as shown in Figure 4.1. Note that telnet command needs to follow by IP address or domain name. In this example, the default IP address is 192.168.2.1/24 If users change the switch IP address, the IP address to log-in should be changed to match the new switch IP address.

Command Line Interface for Telnet

After input the telnet command line, the switch’s interface is displayed as shown in Figure 4.2.

Users will see the welcome screen to the switch interface. From Chapter 3, configuring through telnet is like configuring through the serial console. Users are automatically logged into the privileged mode. The configuration commands are also like the serial console methods. (Please refer to Chapter 2 for more information on configuration).

Commands in the Privileged Mode

When users do not know the commands to use for the command line configuration, users type in “?” and the commands are displayed on screen as shown in Figure 4.3.

Commands in the Configuration Mode

When users type in “?” in configuration mode, a long list of commands isdisplayed on screen as shown in Figure 4.4. Table 4.1 shows all commands that can be used to configure the switch in the configuration mode.

Table 4.1 Commands in the Configuration Mode:

Commands	Descriptions
alert	Alert information
boot	Reboot the switch
cos-mapping	CoS mapping information
clear	Clear values in the destination protocol
copy	Copy configuration
cring	Compatible-Ring configuration
disable	Turn off the privileged mode command
dscp-mapping	DSCP mapping information
dhcp	DHCP information
dot1x	802.1x information
daylight-saving-time	Daylight Saving Time
exit	Exit the current mode and moveto the previous mode
erase	Erase the configuration
erps	ERPS information
filter	Filter the information of the source MAC address
garp	GARP information
gvrp	GVRP information
help	Description of the interactive help system
history	Set the number of history commands
ip	IP information
igmp	IGMP information
ia-ring	iA-Ring configuration
logout	Log out of the system
lldp	LLDP information
lacp	LACP information
mac-age-time	Enable age-out time for the MAC address
mirror-port	The monitoring information of a Port
mac-address-table	Information of the MAC address table
no	Negate a command or set to its defaults
password	Password information
port	Port information
ping	Send ICMP ECHO_REQUEST to network hosts
ptp	PTP information
qos	QoS information
radius-server	Radius server information
show	Show information of the current running system
stormfilter	Storm filter on all kinds of traffic (Broadcast,Multicast,Unitcast)
security	Security configuration of a static port
system	System information
sntp	Enable SNTP
systemtime	Configuration of the system time
syslog	Syslog information
smtp	SMTP configuration
snmp	SNMP information
spanning-tree	Spanning Tree Protocol
timeout	Set the current CLI timeout
trunk	Trunking information
uring	U-Ring configuration
vlan	VLAN information

Note: Please see Chapter 3 for the details of switch configuration.