futurealert: cisco switching

Inter Vlan is Used to Communicate Between two or more different Vlans. Network Devices in different Vlans cannot communicate with one another without help of  Router to route the data between Vlans. Types of vlan 1. Port based Vlan - Assign Vlan to Ports 2. Network Based Vlan - Assign vlan to Networks Steps to Configure Inter Vlan: 1. Vlan Database 2. Access Mode 3.Trunk Mode 4. Encapsulation   Step 1  Syntax to create a Vlan Database Switch>enable Switch#vlan database Switch(vlan)#vlan <no> name <anyname> Switch(vlan)#exit To verify Vlan Database Switch#show vlan brief   Step 2  Syntax to create Access Mode Switch>enable Switch#config t Switch(config)#interface fastEthernet <port no> Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan <no> Switch(config-if)#exit To Verify Switch#show vlan brief   Step 3  Syntax to create Trunk Mode Switch>enable Switch#config t Switch(config)#interface fastEthernet <portno> Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan all Switch(config-if)#exit To Verify Trunk: Switch#show interfaces trunk   Step 4  Syntax to Create Encapsulation Router#enable Router#config t Router(config)#interface fastEthernet <port no> Router(config-if)#no shutdown Router(config)#interface fastEthernet <port no>.<sub-if no> Router(config-subif)#encapsulation dot1Q <vlan no> Router(config-subif)#ip address <gateway ip address> <subnet mask> Router(config-subif)#exit <Sub- if no> sub interface number range 1-65535  Here we configured as Vlan 10 accessing 192.168.10.0 network and Vlan 20 Accessing 192.168.20.0 <a href="http://www.futurealert.com/wp-content/uploads/2011/10/inter-vlan.jpg"><img alt="" class="aligncenter size-full wp-image-825" height="435" src="http://www.futurealert.com/wp-content/uploads/2011/10/inter-vlan.jpg" width="579" /></a> Creating Vlan For Creating VLan we need a Switch and PC PC1 --- ip 192.168.10.2   255.255.255.0 gw: 192.168.10.1 Pc2 --- ip 192.168.10.3   255.255.255.0 gw: 192.168.10.1 Pc3 --- ip 192.168.20.2   255.255.255.0 gw: 192.168.20.1 Pc4 --- ip 192.168.20.3   255.255.255.0 gw: 192.168.20.1 gw : Default Gateway Switch --- Cisco Catalyst 2950 Router --- Cisco 2503 cables used Twisted Pair Straight-trough to connect between Switch to PC and Switch to Router Switch Configuration Creating Vlan Database Switch>en Switch#vlan database Switch(vlan)#vlan 10 name cisco Switch(vlan)#vlan 20 name ms Switch(vlan)#exit Switch#show vlan brief 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 10   cisco                                        active 20   ms                                           active 1002 fddi-default                         active 1003 token-ring-default             active 1004 fddinet-default                   active 1005 trnet-default                       active Accessing Ports to VLAN Switch#config t Switch(config)#interface fastEthernet 0/1 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 10 Switch(config-if)#interface fastEthernet 0/2 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 10 Switch(config-if)#interface fastEthernet 0/3 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 20 Switch(config-if)#interface fastEthernet 0/4 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 20 Switch(config-if)#^Z Switch#show vlan brief VLAN Name                                    Status    Ports ---- -------------------------------- --------- ------------------------------- 1    default                                        active    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 10   cisco                                           active    Fa0/1, Fa0/2 20   ms                                              active    Fa0/3, Fa0/4 1002 fddi-default                            active 1003 token-ring-default                active 1004 fddinet-default                      active 1005 trnet-default                           active Trunk Between Network Devices Switch>en Switch#config t Switch(config)#interface fastEthernet 0/5 Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan all To verify trunk Switch#show interfaces trunk Port        Mode         Encapsulation  Status        Native vlan Fa0/5       on            802.1q                 trunking    1 Port        Vlans allowed on trunk Fa0/5       1-1005 Port        Vlans allowed and active in management domain Fa0/5       1 Port        Vlans in spanning tree forwarding state and not pruned Fa0/5       1 Encapsulation (Router) Router>en Router#config t Router(config)#interface fastEthernet 0/0 Router(config-if)#no shutdown Router(config-if)#interface fastEthernet 0/0.1 Router(config-subif)#encapsulation dot1Q 10 Router(config-subif)#ip address 192.168.10.1 255.255.255.0 Router(config-subif)#exit Router(config)#interface fastEthernet 0/0.2 Router(config-subif)#encapsulation dot1Q 20 Router(config-subif)#ip address 192.168.20.1 255.255.255.0 Router(config-subif)#exit Router#show running-config Building configuration... Current configuration : 783 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname Router . . . . interface FastEthernet0/0 no ip address duplex auto speed auto ! interface FastEthernet0/0.1 encapsulation dot1Q 10 ip address 192.168.10.1 255.255.255.0 ! interface FastEthernet0/0.2 encapsulation dot1Q 20 ip address 192.168.20.1 255.255.255.0 Result: All pcs Commuicate with each other.....

How to: InterVlan routing Configuration

Inter Vlan is Used to Communicate Between two or more different Vlans. Network Devices in different Vlans cannot communicate with one anothe...