Stub router =========== Public domain ******************************************************************************** A Stub router, One-armed router or router on a stick is a router that routes traffic between virtual local area networks (VLANs). It has only a single Ethernet NIC that is part of two or more Virtual LANs, enabling them to be joined.
******************************************************************************** ### SW0 Commands enable vlan database vlan 10 vlan 20 apply exit conf t hostname SW0 int f0/0 switchport mode trunk switchport trunk encapsulation dot1q int f0/1 switchport mode access switchport access vlan 10 int f0/2 switchport mode access switchport access vlan 20 exit exit write ******************************************************************************** ### R0 Commands enable vlan database vlan 10 vlan 20 apply exit conf t hostname R0 int f0/0 no shutdown int f0/0.10 encapsulation dot1Q 10 ip ad 192.168.10.1 255.255.255.0 int f0/0.20 encapsulation dot1Q 20 ip ad 192.168.20.1 255.255.255.0 exit exit write ******************************************************************************** ### PC1 Commands enable conf t hostname PC1 int f0/0 no shutdown ip ad 192.168.10.2 255.255.255.0 exit ip route 0.0.0.0 0.0.0.0 192.168.10.1 exit write ******************************************************************************** ### PC2 Commands enable conf t hostname PC2 int f0/0 no shutdown ip ad 192.168.20.2 255.255.255.0 exit ip route 0.0.0.0 0.0.0.0 192.168.20.1 exit write ******************************************************************************** ### PC1 Test PC1#ping 192.168.10.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2 seconds: .!!!! Success rate is 80 percent (4/5), round-trip min/avg/max = 4/9/16 ms PC1#ping 192.168.20.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.20.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 8/10/16 ms ******************************************************************************** ### PC2 Test PC2#ping 192.168.20.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds: .!!!! Success rate is 80 percent (4/5), round-trip min/avg/max = 4/5/8 ms PC2#ping 192.168.10.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.10.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 8/9/12 ms ******************************************************************************** ### SW0 Config ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname SW0 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 switchport mode trunk ! interface FastEthernet0/1 switchport access vlan 10 ! interface FastEthernet0/2 switchport access vlan 20 ! interface FastEthernet0/3 ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1 no ip address ! ip http server ! ip forward-protocol nd ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 ! ! end ******************************************************************************** ### R0 config ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R0 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 no ip address duplex auto speed auto ! interface FastEthernet0/0.10 encapsulation dot1Q 10 ip address 192.168.10.1 255.255.255.0 ! interface FastEthernet0/0.20 encapsulation dot1Q 20 ip address 192.168.20.1 255.255.255.0 ! ip http server ! ip forward-protocol nd ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 ! ! end ******************************************************************************** ### PC1 config ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname PC1 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ip address 192.168.10.2 255.255.255.0 duplex auto speed auto ! ip http server ! ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 192.168.10.1 ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 ! ! end ******************************************************************************** ### PC2 Config ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname PC2 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 ip address 192.168.20.2 255.255.255.0 duplex auto speed auto ! ip http server ! ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 192.168.20.1 ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 ! ! end ******************************************************************************** _BY: Pejman Moghadam_ _TAG: vlan_ _DATE: 2012-01-24 13:30:47_