Lab 63: Configuring Extended VLANs on Cisco Catalyst Switches

Lab Objective:

The objective of this lab exercise is for you to learn and understand how to configure extended VLANs 1006–4096 on Cisco Catalyst IOS Switches. In addition, you are required to familiarize yourself with the commands available in Cisco IOS to validate and check your configurations.

Lab Purpose:

VLAN configuration is a fundamental skill. VLANs allow you to segment your network into multiple, smaller broadcast domains. As a Cisco engineer, as well as in the Cisco CCNA exam, you will be expected to know how to configure extended VLANs on Cisco switches.

Certification Level:

This lab is suitable for ICND2 and CCNA certification exam preparation.

Lab Difficulty:

This lab has a difficulty rating of 5/10.

Readiness Assessment:

When you are ready for your certification exam, you should complete this lab in no more than 10 minutes.

Lab Topology:

Please use the following topology to complete this lab exercise:

Task 1:

In preparation for VLAN configuration, configure a hostname on Sw1 as well as the VLANs depicted in the topology. Keep in mind that extended VLANs can only be configured on a switch in VTP Transparent mode.

Task 2:

Configure ports FastEthernet0/5 to FastEthernet0/8 as access ports and assign them to the VLANs specified.

Task 3:

Verify your VLAN configuration. Feel free to replicate the steps above on Sw2.

Configuration and Verification

Task 1:

NOTE: By default, Cisco switches are VTP servers. Only standard range VLANS 1–1005 are configurable on VTP servers. To configure extended range VLANS (1006–4096), you must configure the switch as a VTP Transparent switch. Otherwise, you will get the following error message:

Extended VLANs not allowed in VTP SERVER mode 
Failed to commit extended VLAN(s) changes.

NOTE: Configuration files will be kept from previous labs. In order to remove them, you can re-type the commands with the word “no” in front as shown below:

Sw1(config)#no vlan2010

You may also need to reset the switch back to VTP server mode if appropriate.

Switch#config t 
Enter configuration commands, one per line.  End with CTRL/Z.
Switch(config)#hostname Sw1 
Sw1(config)#vtp mode transparent 
Setting device to VTP TRANSPARENT mode. 
Sw1(config-vlan)#name SALES 
Sw1(config-vlan)#name MANAGERS 
Sw1(config-vlan)#name ENGINEERS 
Sw1(config-vlan)#name SUPPORT

Task 2:

Sw1#config t 
Enter configuration commands, one per line.  End with CTRL/Z.
Sw1(config)#interface fastethernet0/5 
Sw1(config-if)#switchport mode access 
Sw1(config-if)#switchport access vlan2010 
Sw1(config)#interface fastethernet0/6 
Sw1(config-if)#switchport mode access 
Sw1(config-if)#switchport access vlan2020 
Sw1(config-if)#interface fastethernet0/7 
Sw1(config-if)#switchport mode access 
Sw1(config-if)#switchport access vlan2030 
Sw1(config-if)#interface fastethernet0/8 
Sw1(config-if)#switchport mode access 
Sw1(config-if)#switchport access vlan2040

Task 3:

Sw1#show vlan brief 

VLAN Name                   Status    Ports 
---- ---------------------- --------- ------------------------------- 
1    default                active    Fa0/1, Fa0/2, Fa0/3, Fa0/4 
                                      Fa0/9, Fa0/10, Fa0/11, Fa0/12 
                                      Fa0/13, Fa0/14, Fa0/15, Fa0/16 
                                      Fa0/17, Fa0/18, Fa0/19, Fa0/20 
                                      Fa0/21, Fa0/22, Fa0/23, Fa0/24 
                                      Gi0/1, Gi0/2

2010   SALES                active    Fa0/5 
2020   MANAGERS             active    Fa0/6 
2030   ENGINEERS            active    Fa0/7 
2040   SUPPORT              active    Fa0/8 

[Output Truncated]


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