I have 2 distinct network segments (192.168.10.0/24 & 192.168.1.0/24) in my company, and we need them bridged. The thing is the only equipment I have available is a CISCO 878 router that, unfortunately, is a bit peculiar.
The 878 is a beefed-up cousin of the consumer-grade routers ISP distribute for free. It supports routing between the (predetermined) WAN port and the 4 LAN ports, which essentially are switch ports and not router ports. It does support VLANs and configuration of the switch ports.
In my 'running-config' I have:
! interface FastEthernet0 switchport mode trunk switchport trunk encapsulation dot1q switchport trunk allowed all ! interface Vlan1 ip address 192.168.10.80 255.255.255.0 no shutdown ! interface Vlan2 ip address 192.168.1.69 255.255.255.0 no shutdown !
Now, in my switch I have configured a port as trunk. What I want is to connect the trunk port on my switch to one of the LAN ports on the 878 and be able to route between the 2 segments.
How do I proceed from here?
I understand my problem comes from the fact that the 878 has inside both a router and a switch, and the ports connecting the two are "hidden". If I had two separate devices I would simply configure subinterfaces on a a router port and proceed with router-on-a-stick configuration.