I'm trying to connect 4 networks with 1 router, i created 2 sub-interfaces in the router, when i tried to create the 3rd sub-interface i got this output "%Cannot create sub-interface", this is my topology: https://i.gyazo.com/0d7939a1116e10e3792fe5fd843e35d7.png
This is my Router's configuration:
hostname Router
!
ip cef
ip ipv6 cef
!
spanning-tree mode pvst
!
interface GigabitEthernet0/0/0
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0/0.10
encapsulation dot 1Q 10
ip address 10.1.1.254 255.255.255.0
!
interface GigabitEthernet0/0/1
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0/1.20
no ip address
!
interface GigabitEthernet0/0/2
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1/0
swithport mode access
switchport nonegotiate
!
!
interface GigabitEthernet0/1/1
swithport mode access
switchport nonegotiate
!
!
interface GigabitEthernet0/1/2
swithport mode access
switchport nonegotiate
!
!
interface GigabitEthernet0/1/3
swithport mode access
switchport nonegotiate
!
interface Vlan1
no ip address
!
ip classless
!
ip flow-export version 9
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
end
I need to create 4 networks, each network has a unique VLAN. And add default gateway to each VLAN to make the PC's communicate with each other. I know it's much better to put 1 network only and separate the VLAN's by 1 switch. But i want to use more interfaces in a Router, than Switches.
