I. Lab Objectives
Master how to configure a vswitch using telnet
Ii. Technical Principles
- Configure the management IP address of the vswitch (the IP address of the computer and the management IP address of the vswitch are in the same network segment );
- Configure the username and logon password for the Telnet User:
Switch (config) # enble password XXXX // set the password for entering the privileged mode;
Switch (config-line) # password XXXX // you can set the password required to connect the device through the Console port and telnet for remote logon.
Switch (config) # Line console 0
Switch (config-line) # password XXXX // set the password for connecting to the device through the Console Port
Switch (config-line) # Login
Switch (config) # Line vty 0 4
Switch (config-line) # password XXXX // set the Telnet Remote logon Password
Switch (config-line) # Login
Iii. Experiment steps
Lab Topology
Switch> en
Switch # conf t
Enter configuration commands, one per line. End with cntl/Z.
1. Configure the management IP address of the vswitch
Switch (config) # interface VLAN 1 // by default, all ports of the switch are in VLAN 1
Switch (config-If) # IP address 192.168.1.1 255.255.255.0 // configure the vswitch management IP Address
Switch (config-If) # No shutdown // enable interface vlan1
% Link-5-changed: interface vlan1, changed state to up
Switch (config-If )#
% LINEPROTO-5-UPDOWN: Line protocol on interface vlan1, changed state to up
Switch (config-If) # exit
2. Set the password for entering the privileged Mode
Switch (config) # enable password 123456 // set the password used to enter the privileged Mode
Switch (config) # Line console?
<0-0> first line number
3. Set the password for connecting to the device through the Console Port
Switch (config) # Line console 0
Switch (config-line) # password ASDF // set the password for connecting to the device through the Console Port
Switch (config-line) # Login
Switch (config-line) # exit
Switch (config) # Line vty?
<0-15> first line number
4. Set the Telnet Remote logon Password
Switch (config) # Line vty 0 4
Switch (config-line) # password ABC123 // set the Telnet Remote logon Password
Switch (config-line) # Login
Switch (config-line) # End
Switch #
% SYS-5-CONFIG_ I: configured from console by the Console
5. View configuration information
Switch # Show running-config
Building configuration...
Current configuration: 1064 bytes
!
Version 12.2:
No service timestamps log datetime msec
No service timestamps debug datetime msec
No service password-Encryption
!
Hostname Switch
!
Enable Password 123456
!
!
!
Interface fastethernet0/1
!
......
!
Interface fastethernet0/24
!
Interface gigabitethernet1/1
!
Interface gigabitethernet1/2
!
Interface vlan1
IP address 192.168.1.1 255.255.255.0
!
!
Line con 0
Password ASDF
Login
!
Line vty 0 4
Password ABC123
Login
Line vty 5 15
Login
!
!
End
Switch #
Iv. Verification
1. Verify the password of the device connected through the Console Port
Press return to get started.
User Access Verification
Password: // enter ASDF here
Switch>
2. Verify the password in privileged mode.
Switch> en
Password: // enter 123456 here
Switch #
3. Verify the Telnet Remote logon Password
A. set IP addresses for PCs
B. Open command prompt
Packet tracer PC command line 1.0
PC> ipconfig
IP address ......: 192.168.1.2
Subnet Mask ......: 255.255.255.0
Default Gateway ......: 192.168.1.1
PC> Ping 192.168.1.1
Pinging 192.168.1.1 with 32 bytes of data:
Request timed out.
Reply from 192.168.1.1: bytes = 32 time = 32 Ms TTL = 255
Reply from 192.168.1.1: bytes = 32 time = 32 Ms TTL = 255
Reply from 192.168.1.1: bytes = 32 time = 31 Ms TTL = 255
Ping statistics for 192.168.1.1:
Packets: Sent = 4, stored ED = 3, lost = 1 (25% loss ),
Approximate round trip times in Milli-seconds:
Minimum = 31 ms, maximum = 32 ms, average = 31 Ms
PC> Telnet 192.168.1.1 // remote Logon
Trying 192.168.1.1... open
User Access Verification
Password: // vty Password
Switch> en
Password: // enable password
Switch # Show running-config
Building configuration...
Current configuration: 1063 bytes
!
Version 12.2:
No service timestamps log datetime msec
No service timestamps debug datetime msec
No service password-Encryption
!
Hostname Switch
!
Enable Password 123456
!
!
!
Interface fastethernet0/1
!
......
Interface fastethernet0/24
!
Interface gigabitethernet1/1
!
Interface gigabitethernet1/2
!
Interface vlan1
IP address 192.168.1.1 255.255.255.0
!
!
Line con 0
Password ASDF
Login
!
Line vty 0 4
Password ABC123
Login
Line vty 5 15
Login
!
!
End
Switch #