I have a Cisco 2800 series ISR receiving 2 WAN links a 5Mbps fiber link and a 1.5Mbps T1. The Fiber is connected to the ISR on gigabit Ethernet 0/1, the T1 is on Serial 0 and our LAN side is connected on 0/0 to an HP Procurve Switch 3500-24. I am usi...