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.
if the router and the L3 switch are not directly connected and there is the L2 switch in the middle, you need to use a dynamic routing protocol or the devices will not be able to detect a failure.
So I recommend you to stay with OSPF. You can consider to use EIGRP if you wish to perform some route filtering per interface.
Otherwise you would discover that if the static route IP next-hop fails, the static route is not removed until the ARP entry for the next-hop is in ARP table and with default timers it means up to 4 hours !!!
You would need to use IP SLA to monitor the state of ip next-hop but at this point using a dynamic routing protocol is the easier choice as the routing protocol hellos will be your IP SLA.
I am sending my network daigram which will help you to know about my problem, here in my dai there is router, L2 switch, ISA server and L3 switch. All the sites traffic request for internet is coming on router and then router is sending all the traffic to L3 switch by route map and then L3 sending this traffic to ISA server and now using public ip ISA server is sending that traffic to router and hence the traffic is going outside see the case when traffic is coming back from outside here the traffic is coming to router then router is forwading that traffic to ISA server, here in ISA server there is route which is saying send all the traffic to L3 switch, now all the traffic is in L3 switch here we are using ospf so that L3 communicate with router and the users will reacive the internet request..What i want to do, i want to remove ospf in L3 switch and i want to use static routing in L3 switch.....Hope you will understand my Problem......
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