Routing

[fellerhoffpeter]

Hi there,

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.

can some help to make it work

Thanks in advance

Peter

[Yu Chiu Sze]

Hi Peter,

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

Hope it can help you.

Billy