Can you confirm are you trying have the InterfaceDetails.aspx resource display information and statistics about two interfaces.
How would you intend to navigate to it from the router, given that if viewing the node details of the relevant router you would be able to view the two interfaces separately and drill down into the InterfaceDetails.aspx for each interface. If the interfaces are bonded/channelled, then you would be able to have the InterfaceDetails.aspx main stats for both.
This is a bit different from a report which this would be immediately possible for.
Exactly. How would I get the this to work?