i have a problem to configure a Cisco Router 1921 because i am not knowing this very well.
i have following situtation:
We have an existing network with 192.168.50.0 255.255.252.0 and a default gateway with 192.168.51.10. The default GW is at the moment the Firewall.
Now we have to set up a new enviromet with a new IP Range. we have for the servers a 10.10.10.0 /24 and for the Clients a 10.10.12.0/24. Now we want to route between the networks because we can not make a big bang ip migraten.
So we want to router between the these 3 networks and for that we want to use the 1921. If it is possible i want on the interface g0/0 all the different networks and the g0/1 will be connected directly to the Firewall. Is that possible ?
I tried a few things like bind on interface g0/0 sub interfaces with the ip address of the default gateway for the 3 different networks.
Your direction is probably right. You have to configure sub-interface on g0/0 with differenet network. In addition, encapsulation must be defined before activitate the sub-interface. The connected port must be trunk port in advance. Then you could assign mutiple IP address on one single interface with different vlan. Examplet of configuration:
interface GigabitEthernet0/1.10 encapsulation dot1Q 10 ip address 10.0.10.1 255.255.255.0 !
interface GigabitEthernet0/1.20 encapsulation dot1Q 20 ip address 10.0.20.1 255.255.255.0
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