I am having trouble routing between 2 switches and 1 router. My network diagram is below.
I currently have both switches trunked to ports fa 0/0 and 0/1 of the router.
I created sub interfaces on the router as well. I also set the IP address default gateways for the end devices for these sub interfaces.
The problem I am facing is PC0 and PC1 can talk to each other without an issue, however PC 2 and 3 cannot. Also, PC 2 and 3 cannot communicate with PC 0 and 1 and vice versa.
When I check to see how the packet is moving through the network, for example from PC 2 to PC 3 it reaches switch 1, switch 1 sends it to the router, the router says there isn't a sub interface with this VLAN enabled and then drops the packet.
When I check the router's interfaces in show int , it clearly shows the interface up, and VLAN id being correct.
My logic is that PC2 sends the packet to the default gateway, the router sends it out the sub interface associated with PC3's subnet and the switch sends it to PC3.
I also tried setting up static routes but it still isn't working.
It's driving me nuts, is there a problem with my logic?
Update Still not working, are some of my configs for the router and switches.
interface FastEthernet0/1 switchport access vlan 30 switchport mode access ! interface FastEthernet0/2 switchport access vlan 40 switchport mode access ! interface FastEthernet0/3 ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/24 switchport mode trunk !
hostname Router ! ! ! ! ! ! ! ! ip cef no ipv6 cef ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0/0 no ip address duplex auto speed auto ! interface FastEthernet0/0.10 encapsulation dot1Q 10 ip address 192.168.10.254 255.255.255.0 ! interface FastEthernet0/0.20 encapsulation dot1Q 20 ip address 192.168.20.254 255.255.255.0 ! interface FastEthernet0/0.30 encapsulation dot1Q 30 ip address 192.168.30.254 255.255.255.0 ! interface FastEthernet0/0.40 encapsulation dot1Q 40 ip address 192.168.40.254 255.255.255.0 ! interface FastEthernet0/1 no ip address duplex auto speed auto ! interface Vlan1 no ip address shutdown ! ip classless ! ip flow-export version 9 !
interface FastEthernet0/1 switchport access vlan 10 switchport mode access ! interface FastEthernet0/2 switchport access vlan 20 switchport mode access ! interface FastEthernet0/24 switchport mode trunk ! interface Vlan1 no ip address shutdown !