Cisco 2811->RB433AH-?RB433AH->Cisco 2811

Hello all, I have two branch offices linked up using Mikrotik RB433AH as shown in the attached diagram. Each of the RB433AH is configured as a bridge and OSPF implemented on each of the Cisco 2811.The routing seems to work as I can ping all the interfaces on the routers from any of the location. The challenge I have is that I cannot ping WS2 from WS1 and vice versa.

What could be the problem?
cisco-mikrotik-mikrotik-cisco.jpg

  1. Do you have default gateway on WS1/WS2?

  2. Do you have proper routes at Cisco and RB433AH?