This section outlines some of the popular commands you use on a Cisco
switch for the CCENT certification exam. Most of the basic router
commands, such as setting passwords and banners, work on the switch.
| Command(s) | Result |
|---|---|
| Switch#show mac-address-table | Used to display the MAC address table on the switch. |
| Switch>enable Switch#config term Switch(config)#hostname NY-SW1 NY-SW1(config)# |
Used to change the hostname on the switch. |
| NY-SW1>enable NY-SW1#config term NY-SW1(config)#interface vlan1 NY-SW1(config-if)#ip address 23.0.0.25 255.0.0.0 NY-SW1(config-if)#no shutdown NY-SW1(config-if)#exit NY-SW1(config)#ip default-gateway 23.0.0.1 |
Configures the switch for an IP address so that you can remotely connect to the switch and manage it. Also notice that the default gateway is set. If you do not set the default gateway, you will be unable to manage the switch from a different network. |
| Switch>enable Switch#config term Switch(config)#interface f0/5 Switch(config-if)#speed 100 Switch(config-if)#duplex full Switch(config-if)#description Web Server Switch(config-if)#no shutdown |
These commands are used to manually configure a port for 100 Mbps, full duplex, and assigns a description to the port. The port is then enabled with the no shutdown command. |
| Switch(config-if)#shutdown | Disables the port. |
| SW1>enable SW1#config term SW1(config)#interface f0/6 SW1(config-if)#switchport mode access SW1(config-if)#switchport port-security SW1(config-if)#switchport port-security mac-address sticky SW1(config-if)#switchport port-security maximum 1 SW1(config-if)#switchport port-security violation shutdown |
This group of commands configures port security on port #6. Port security is a way to limit which systems can connect to a switch. This code example uses a "sticky" MAC address that tells the switch to configure the port for whatever MAC uses the port first. It then sets the maximum number of MACs for the port to 1 and shuts down the port if there is a violation. |
| show port-security address | Show the MAC addresses that have been configured for each port. |
| show port-security interface f0/6 | Show the configuration of port security on port 6. |
| Switch>enable Switch#vlan database Switch(vlan)#vlan 2 name Executives VLAN 2 added: Name: Executives Switch(vlan)#exit |
Configures a VLAN named Executives in the VLAN database. |
| Switch#show vlan | Display a list of VLANs. |
| Switch(config)#interface range f0/6 -
9 Switch(config-if-range)#switchport access vlan 2 |
Place ports 6–9 in the newly created VLAN 2. |
Comments
Post a Comment