Switch configuration learning notes

Sub-mode of vswitch Configuration:

1. line configuration mode [host name (config-line) #]: line parameters configured by the switch

2. Interface Configuration Mode [host name (config-if) #]: interface parameters configured by the switch

You can use the Enter key to display all data, and the Space key is displayed on the entire page. For a device with no vswitch configuration by default, you must set some names, passwords, and remote connections to facilitate future maintenance.

 
 

  
  
Set the switch name: switch (config) # hostname switch
  
  
Set ip address: switch (config) # ip address 192.168.0.1 255.255.0
  
  
Set the default gateway of the vswitch: switch (config) # ip default-gateway 192.168.0.1
  
  
Set password: switch (config) # enable password level 1 cisco
 
 

Note that when designing a topology, you must set a vswitch name that is easily recognized by the Administrator. The password is case sensitive. Level 1 indicates the logon password level 15 indicates the global mode. After completing some basic settings, you can use

View vswitch information using the Show command for vswitch Configuration

 
 

  
  
Show version/* view system hardware configurations and software version numbers.
  
  
Show running-config/* view the currently running configuration information
  
  
Show interfaces/* view the configuration information of all ports
  
  
Show interfaces [port number]/* view the configuration information of a specific port number
  
  
Show interfaces status/* view the status information of all ports
  
  
Show interfaces [port number] switchport/* shows the status of the L2 port, which can be used to determine whether the port is a L2 or L3 Port
  
  
Show ip/* view the IP address of the vswitch
 
 

S0/1: It is the Serail interface, that is, the LAN interface on the switch, representing the 1st serial ports of the 1st modules.

 
 

  
  
Router#conf t  
  
  
 
  
  
Router(config)#int fa0/1.1  
  
  
 
  
  
Router(config-subif)#encapsulation dot1q 10  
  
  
 
  
  
Router(config-subif)#ip address 192.168.1.1 255.255.255.0  
  
  
 
  
  
Router(config-subif)#int fa0/1.2  
  
  
 
  
  
Router(config-subif)#encapsulation dot1q 20  
  
  
 
  
  
Router(config-subif)#ip address 192.168.2.1 255.255.255.0  
  
  
 
  
  
Router(config-subif)#int fa0/1  
  
  
 
  
  
Router(config-if)#no shut  Router(config-if)#no shu 
 
 

Vswitch configuration commands

# The preceding command prompt, Router # is the privileged mode, Router (config) # Is the global configuration mode, and Router (config-subif) # Is the subinterface mode. The following describes each command:

Conf t enters the global configuration mode.

Int fa0/1.1 is the sub-interface configuration for fa0/1.1

Encap dot1q 10 is a data frame that encapsulates VLAN10 data as 802.1q.

Ip address 192.168.1.1 255.255.255.0 is to configure the sub-interface IP address as 192.168.1.1/24. The following two statements are the same as above.

Int fa0/1: Enter the fa0/1 Interface Configuration Mode

No shut is used to activate this interface

When you enter a command in IOS, the system will not be confused as long as the abbreviation is used. You can use the abbreviation when using the switch configuration command. For example, Switch> enable: in user mode, only enable is available for commands starting with en. Therefore, Switch> en can be abbreviated as Switch> enable. You can also use the TAB key to automatically complete the command, such as Switch> en. Press the TAB on the keyboard to automatically complete Switch> enable.

A small Summary of Switch configuration is presented to you. This is some basic knowledge of CCNA certification. I hope you can master and understand it.