Abstract: A switch can provide a unique electrical signal path for any two network nodes accessing the switch. The most common switch is an Ethernet switch. Although most switches can be used directly without configuration, sometimes we need to use the switch command to set the switch. Switch command is a computer language, which is specially used to control switches. So what is the network switching command? Let's have a look. A complete set of switch configuration commands

A, mode command

1, user mode: Switch & gt

2. Privileged mode: Switch & gt enables.

Switch #

3. Global configuration mode: switch #configterminal

Switch (Configuration) #

4. Interface configuration mode: switch (configuration) # interface FastEthernet 0/ 1.

Switch (configuration -if)#

5. Line Mode: Switch (Configuration) # Line Console 0

Switch (configuration line) #

Second, the command in the privileged mode

1. MAC address of the viewer: Switch#showmac-address-table.

2. Discovery (CDP):

Switch #showcdp

Switch # showcdpinterfaceffatasethernet0/1

Switch #showcdpneighbors

Switch # showcdpneighborsdetail

Switch #showcdpentry

3. Save the machine configuration:

Switch # copyrunning-configstartup-config or switch #write.

4. Restore the factory value of the switch:

Switch #erasestartup-config

Switch # reload

Three. Commands in global configuration mode

1. Configure the hostname: switch (config) # hostnamesw1.

Sw 1 (configuration) #

2. Set the login password: Switch(config)#lineconsole0.

Switch (Configuration Line) # Password

Switch (configuration line) # Login

3. Enable password: Switch(config)#enablePassword password.

4. Encrypted and saved enable password: Switch(config)#enablesecret password.

5. Configure IP address:

Switch (Configuration) # Interface vlan 1

Switch (configuration -if)# IP address gateway

Switch (configuration -if)#noshutdown

6. Configure the switch gateway: switch (config) # IP default-gateway gateway.

Four. VLAN configuration command

1. Create vlan command:

A) In global configuration mode:

Switch (Configuration) #vlan2

Switch (configuration) #namev2

Switch (Configuration) #mtu value

Switch (Configuration) # End

B) under b)Vlan database:

Switch # database

Switch # VLAN 2 Name v2

Switch # VLAN 2 input value

Switch # Exit

2. Delete vlan command:

A) In global configuration mode:

Switch (configuration) #novlan2

Switch (Configuration) # End

B) under b)Vlan database:

Switch #novlan2namev2

Switch # Exit

3. Add a port to the vlan:

Switch # Configuration Terminal

Switch (configuration) # interface f 0/ 1 (port)

Switch (configuration -if)#Switchportmodeaccess

Switch (configuration -if)#switchportaccessvlan2

Switch (Configuration -if)# End

Add multiple ports to a vlan at a time:

Switch # Configuration Terminal

Switch (configuration) # Interface range 0/ 1-5 (port)

Switch (configuration -if)#switchportaccessvlan2

Switch (Configuration -if)# End

Note: switch#showvlanbiref (view vlan information)

4. Configure vlantrunk:

(1) Configure the interface as a relay command:

Switch (configuration) # interface f 0/ 1 (port)

Switch (configuration if)#Switchportmodetrunk

(2) The command to configure the interface in dynamic negotiation mode:

Switch (configuration) # interface f 0/ 1 (port)

Switch (configuration-if) # switchportmodedynamicdesible/auto

(3) Delete vlan from trunk:

Switch (configuration) # interface f 0/ 1 (port)

Switch (configuration-if) # switchporttrunkallowedvlanremove2

(4) add vlan in trunk:

Switch (configuration) # interface f 0/ 1 (port)

Switch (configuration-if) # switchporttrunkallowedplanadnd2