I am facing problem in routing between Router and L3 switch. In our network there is core Router, which is connected with L2 switch and then L2 switch is connected with L3 switch and then L3 switch is connected with ISA server which have two interface one is Public and another is Private. The private interface is directly connected with L3 switch and Public interface is connected with L2 switch. Here in our network Traffic coming in to core router from various sites for the internet that traffic is shifted to L3 switch using route maps. When the traffic reachs towards L3 switch here we have made default route which tells anything which comes in L3 switch is shifted to ISA server here in ISA server all the traffic is going outside with using Pubilc IP. Now when the traffic is coming back after coming outside the path is first router then ISA server here in ISA server there is a Persistent Routes which tells the ISA server if any traffic will come back shift it to L3 swicth. Then in L3 switch we are using ospf so all the traffic is going to router by ospf. Now what i want i want to remove ospf in L3 switch and i want to send traffic with static route. Please Help me out from this probem.