VLAN Configuration Page 2

A step by step tutorial showing how to configure VLAN - alongwith screenshots"

All the commands related to VLAN   Common tasks on all Switches: Give HostName to the switch Switch(config)#hostname SW1 -------------------------------- Disable DNS lookup SW1(config)#no ip domain-lookup ------------------------------------ Configure enable secret password SW1(config)#enable secret norah -------------------------------------- Configure the default gateway SW1(config)#ip default-gateway 192.168.99.1 ------------------------------------------ Configure a password to the console port SW1(config)#line console 0 SW1(config-line)#password cisco ----------------------------------------- Configure password to the vty ports SW1(config-line)#login SW1(config-line)#line vty 0 15 SW1(config-line)#password cisco SW1(config-line)#login SW1(config-line)#end --------------------------------- Find out the existing VLANs in the Switch. SW1#show vlan VLAN Name Status Ports - -- - - - - - -- 1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4 Fa0/5, Fa0/6, Fa0/7, Fa0/8 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 Gig1/1, Gig1/2 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active   Let us shut down all the ports SW1(config)#interface range fa0/1-24 SW1(config-if-range)#shutdown SW1(config-if-range)#interface range gi0/1-2 SW1(config-if-range)#shutdown   Save the Configuration SW1#copy running-config startup-config   VTP configuration Procedure: When you have more than one Switch, you can form a group. This is VTP. When forming a group, one of them will be the Server and others will be clients   Consider we have 3 Switches SW1,SW2,SW3. Let us configure SW1 as server, SW2,SW3 as clients Let us put the vtp domain name as 'brain' and vtp password as 'drain' SW1 is the VTP server; SW2 and SW3 are VTP clients. SW1(config)#vtp mode server SW1(config)#vtp domain brain SW1(config)#vtp password drain -------------------------------- SW2(config)#vtp mode client SW2(config)#vtp domain brain SW2(config)#vtp password drain ------------------------------- Configure the Trunk ports SW1(config)#interface range fa0/1-5 SW1(config-if-range)#switchport mode trunk configure one of the vlan as Native vlan: SW1(config-if-range)#switchport trunk native vlan 99 Make the ports active: SW1(config-if-range)#no shutdown   SW1(config)#vlan 10 SW1(config-vlan)#name teachers SW1(config-vlan)#vlan 20 SW1(config-vlan)#name students SW1(config-vlan)#vlan 99 SW1(config-vlan)#name admin Now check the SW2,SW3. You will find that bove configuration is automatically done by the server.   SW2#show vlan brief VLAN Name Status Ports ---------------------------- 1 default active Fa0/1, Fa0/2, Fa0/4, Fa0/5 Fa0/6, Fa0/7, Fa0/8, 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 10 teachers active 20 students active 99 admin active Configure unique ip address for each switch:: SW1(config)#interface vlan99 SW1(config-if)#ip address 192.168.99.11 255.255.255.0 SW1(config-if)#no shutdown SW2(config)#interface vlan99 SW2(config-if)#ip address 192.168.99.12 255.255.255.0 SW2(config-if)#no shutdown SW3(config)#interface vlan99 SW3(config-if)#ip address 192.168.99.13 255.255.255.0 SW3(config-if)#no shutdown Test the connectivity between switches by ping. Now configure the access ports SW2(config)#interface range fa0/5-10 SW2(config-if-range)#switchport access vlan 30 SW2(config-if-range)#interface range fa0/11-17 SW2(config-if-range)#switchport access vlan 10 SW2(config-if-range)#interface range fa0/18-24 SW2(config-if-range)#switchport access vlan 20 Configuration of Router: If there are four ethernet port at the router, you can extend for cables one for each vlan.   But let us configure by vlan trunking method: R1(config)#interface fastethernet 0/1 R1(config-if)#no shutdown R1(config-if)#interface fastethernet 0/1.1 R1(config-subif)#encapsulation dot1q 1 R1(config-subif)#ip address 192.168.1.1 255.255.255.0 R1(config-subif)#interface fastethernet 0/1.10 R1(config-subif)#encapsulation dot1q 10 R1(config-subif)#ip address 192.168.10.1 255.255.255.0 R1(config-subif)#interface fastethernet 0/1.20 R1(config-subif)#encapsulation dot1q 20 R1(config-subif)#ip address 192.168.20.1 255.255.255.0 R1(config-subif)#interface fastethernet 0/1.99 R1(config-subif)#encapsulation dot1q 99 native R1(config-subif)#ip address 192.168.99.1 255.255.255.0 note: vlan99 is made as native vlan. otherwise vlan1 will be the native vlan by default. Configure the webserver end R1(config)#interface FastEthernet0/0 R1(config-if)#ip address 192.168.50.1 255.255.255.0 R1(config-if)#no shutdown

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