Currently I have failover link between two site i.e. Main Hospital were I am working and prison were this hospital support the prisoners if they have health problem. Two links are serving that network. One is Microwave and other one is Radio. Microwave is the primary link and when it get fails spanning tree will automatically start routing to radio link with 3-packets drop. It is working fine out any trouble.
Same sort of setup I planned to implement to another location, which is a Remote hospital, which uses our infrastructure. They have, both microwave and radio link. When microwave fails, radio link has to start serving as in the prison network. But that is not happening.
Both prison and remote hospital are terminated in the same switch and in the same vlan. As per the documentation I read Microwave and radio should be plugged parallel in the Ethernet switch. I am using Cisco 2950 switch for this setup.
The problem is when I enable second link that is remote hospital link the failover is not happening and within few minutes switch get confused and not transmitting any packet to the both links (remote hospital and Prison). So I am using manual option that is if the microwave link at remote hospital end fails I shutdown the microwave interface at my end and enable radio link interface. Failover is working fine with prison link and when I enable hospital link spanning tree getting confused and stopping the both the network.
I hope you understand the exact scenario of what sort of problem I am facing? Please let me know what is the possible solution. Or do I have to create separate vlan for the remote hospital network so that spanning tree won't get confused, or is there any other solution in spanning tree to resolve this issue. Please help me with a solution or suggestion of how to proceed in this scenario.
