Guys currently we have one wan router and its connected to layer three switch (Switch A)â¦.(via vlan 100) now the same layer three switch is connected to firewall (using layer three interface) the firewall is connected to another layer three switch Switch B trusted network) now there are couple of networks being used behind firewall. The current configs has all static routesâ¦â¦the default route is pointed towards WAN router (Ethernet interface) on the same switch static routes has been config for all the networks and it points towards the firewall external interface (which is connected to Switch A).
Now we have to redesign the network and we will be adding two WAN routers to same Service provider (but with different subnet) so the current switch A will be connected to different WAN routers for redundancy (both WAN routers is owned by same service provider. Now our primary focus is that the link which goes to first router shd be primary and the link which goes to second router shd be secondary and we have to use ospf between Switch A and routers. It shd not be active situation when first link fails the traffic shd be diverted to second router. Same shd be done on WAN routers as we will be using BGP between site and service provider.
Now I will use MED to do that but I am not sure how I will use ospf keeping in mind that we will be not suing ospf between firewall and switch. I am totally confusedâ¦.how we will pick up and make preference on ospf for redundancyâ¦â¦.and how we will replace ospf with those static routes or static routes has to be there I am totally confusedâ¦.can someone plz help me out â¦..first I thought that I will use HSRP but the problem is that we have to use different subnet between switch A and two routersâ¦â¦.in which we cant use HSRP