Configuring Static VLANs – 2950 Series

Configuring Static VLANs – 2950 Series

Switch>enable

Switch#configure terminal

Switch(config)#hostname Switch_A

Switch_A(config)#enable secret class

Switch_A(config)#line con 0

Switch_A(config-line)#password cisco

Switch_A(config-line)#login

Switch_A(config-line)#line vty 0 15

Switch_A(config-line)#password cisco

Switch_A(config-line)#login

Switch_A(config-line)#exit

Switch_A(config)#interface Vlan1

Switch_A(config-if)#ip address 192.168.1.2 255.255.255.0

Switch_A(config-if)#no shutdown

Switch_A(config-if)#exit

Switch_A(config)#ip default-gateway 192.168.1.1

Switch_A(config)#end

Create and name two VLANs

Enter the following commands to create and name two VLANs:

Switch_A#vlan database

Switch_A(vlan)#vlan 2 name VLAN2

Switch_A(vlan)#vlan 3 name VLAN3

Switch_A(vlan)#exit

Assign ports to VLAN 2

Assigning ports to VLANs must be done from the interface mode. Enter the following commands to

add port 2 to VLAN 2:

Switch_A#configure terminal

Switch_A(config)#interface fastethernet 0/2

Switch_A(config-if)#switchport mode access

Switch_A(config-if)#switchport access vlan 2

Switch_A(config-if)#end

Contoh lain

Assign ports to VLAN 2

Assigning ports to VLANs must be done from the interface mode. Enter the following commands to

add ports 4, 5 and 6 to VLAN 2.

Switch_A#configure terminal

Switch_A(config)#interface fastethernet 0/4

Switch_A(config-if)#switchport mode access

Switch_A(config-if)#switchport access vlan 2

Switch_A(config-if)#interface fastethernet 0/5

Switch_A(config-if)#switchport mode access

Switch_A(config-if)#switchport access vlan 2

Switch_A(config-if)#interface fastethernet 0/6

Switch_A(config-if)#switchport mode access

Switch_A(config-if)#switchport access vlan 2

Switch_A(config-if)#end

Look at only VLAN2 information

a. Instead of displaying all of the VLANs type the show vlan id 2 command at the Privileged

EXEC mode prompt as follows:

Switch_A#show vlan id 2

Look at only VLAN2 information with a different command (1900: Omit this step)

a. Instead of displaying all of the VLANs type the show vlan name VLAN2 command at the

Privileged EXEC mode prompt.

Switch_A#show vlan name VLAN2

Test the VLANs

Ping from the host in port 0/4 to the host in port 0/1.

a. Was the ping successful? No

b. Why? Different vlan membership

Ping from the host in port 0/1 to the host in port 0/4.

c. Was the ping successful? No

d. Why? Different vlan membership

Ping from the host in port 0/4 to the switch IP 192.168.1.2.

e. Was the ping successful? No

f. Why? Different vlan membership

Ping from the host in port 0/1 to the switch IP 192.168.1.2.

g. Was the ping successful? Yes

h. Why? Same vlan membership

Deleting VLAN Configurations – 2950 Series

Delete a Host from a VLAN

To remove a host from a VLAN, use the no form of the switchport commands in the port interface

configuration mode.

Switch_A#configure terminal

Switch_A(config)#interface fastethernet 0/4

Switch_A(config-if)#no switchport access vlan 2

Delete VLAN 1

a. Try to delete VLAN 1, which is the default VLAN, the same way that you deleted VLAN 3.

Switch_A#vlan database

Switch_A(vlan)#no vlan 1

A default VLAN may not be deleted.

Switch_A(vlan)#exit

Erasing and Reloading the Switch

For the majority of the labs in CCNA 3 and CCNA 4 it is necessary to start with an unconfigured

switch. Use of a switch with an existing configuration may produce unpredictable results. These

instructions allow preparation of the switch prior to performing the lab so previous configuration

options do not interfere. The following is the procedure for clearing out previous configurations and

starting with an unconfigured switch. Instructions are provided for the 2900, 2950, and 1900 Series

switches.

2900 and 2950 Series Switches

1. Enter into the Privileged EXEC mode by typing enable.

If prompted for a password, enter class (if that does not work, ask the instructor).

Switch>enable

2. Remove the VLAN database information file.

Switch#delete flash:vlan.dat

Delete filename [vlan.dat]?[Enter]

Delete flash:vlan.dat? [confirm] [Enter]

If there was no VLAN file, this message is displayed.

%Error deleting flash:vlan.dat (No such file or directory)

3. Remove the switch startup configuration file from NVRAM.

Switch#erase startup-config

The responding line prompt will be:

Erasing the nvram filesystem will remove all files! Continue? [confirm]

Press Enter to confirm.

The response should be:

Erase of nvram: complete

4. Check that VLAN information was deleted.

Verify that the VLAN configuration was deleted in Step 2 using the show vlan command. If

previous VLAN configuration information (other than the default management VLAN 1) is still

present it will be necessary to power cycle the switch (hardware restart) instead of issuing the

reload command. To power cycle the switch, remove the power cord from the back of the

switch or unplug it. Then plug it back in.

If the VLAN information was successfully deleted in Step 2, go to Step 5 and restart the switch

using the reload command.

5. Software restart (using the reload command)

Note: This step is not necessary if the switch was restarted using the power cycle method.

a. At the Privileged EXEC mode enter the command reload.

Switch#reload

The responding line prompt will be:

System configuration has been modified. Save? [yes/no]:

b. Type n and then press Enter.

The responding line prompt will be:

Proceed with reload? [confirm] [Enter]

The first line of the response will be:

Reload requested by console.

After the switch has reloaded, the line prompt will be:

Would you like to enter the initial configuration dialog? [yes/no]:

c. Type n and then press Enter.

The responding line prompt will be:

Press RETURN to get started! [Enter]