Creating an active-active DSC configuration with OSPF routing on 11.x

Sumanta,

You should not have to advertise any routes for virtual servers. The router attached to that VLAN where the virtual's are listening should automatically advertise the attached network if its participating in OSPF. When the traffic arrives at the router then it will forward the incoming traffic to the virtual server. Which F5 it goes to will depend entirely on which BIGIP is currently hosting that virtual servers address. This is determined by which BIGIP is active for the traffic group. This will automatically change when a failover occurs.

Again on the server side of the BIGIP the the adjacent router will advertise the attached network through OSPF. Traffic leaving the BIGIP towards the server will use SNAT to change the source address to the floating IP address of the traffic group (assumes SNAT automap). Again this address is currently hosted by whichever BIGIP is currently hosting the that floating IP address. This is determined by which BIGIP is active for the traffic group. This will automatically change when a failover occurs.

There is no need to advertise specific routes for BIGIP traffic. The adjacent routers should look after all of that for you. The BIGIP's will respond based on which traffic group's they are currently hosting. This is all done at the MAC level in the attached VLANS.