due to upcoming changes to our network I'd like to be able to pass vlans across the FE ports of a Cisco 1841 router. 1 port would go to a managed switch and then to local devices on different VLANs. the 2nd port would go upstream to a Cisco 3825 at a different location which would then connect to the internet. due to monitoring behind the Cisco3825 we would like all NAT to occur on the 3825. what I would like to happen is this example device connected to port 7 on managed switch gets an IP (10.0.7.10) from the Cisco 1841 in VLAN 7 (10.0.7.0/24). traffic from that device goes to the switch, then in f0/1 on the 1841 and out f0/0 still with the same IP info, no NAT occuring. traffic is received on the 3825 port 0/1 and then NAT occurs and out port 0/0 to the internet.
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