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troubleshooting Question

Connecting multiple branch routers WAN interfaces to a single interface on a Cisco 3845 router

Avatar of Mossy_acld
Mossy_acldFlag for United States of America asked on
RoutersNetwork Architecture
10 Comments1 Solution744 ViewsLast Modified:
My problem is connecting our multiple branch routers WAN interfaces to a single interface on a Cisco 3845 router.
Our service provider brings in all connections to us as a single connection, and right now all of these connections are on a single VLAN on a 3750 switch. We would like to use a 3845 router for these connection as recommended by Cisco.
I have configured a primary ip address and used secondary ip addresses for each of the branch routers WAN addresses on the 3845. My problem is on the test branch router I get the following error message "IP_EIGRP: Neighbor not on common sub-net for fastethernet 0/1 (" Which is the WAN address on the branch router. On the Core 3845 router I recieve these error messages "DUAL_5_NBRCHANGE-IP EIGRP Neighbor Up"  DUAL_5_NBRCHANGE-IP EIGRP Neighbor down"   this address is is the test routers WAN ip address.
Right now I do not have this configuration on any production networks as I need to be sure everything will work with out error messages or any other problems before it goes live.
I have included a PDF showing  what I'm trying to accomplish
Any help willbe appreciated
Avatar of Don Johnston
Don JohnstonFlag of United States of America imageInstructor
This problem has been solved!
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