OSPF in Transparent Mode

[#1]

Hi, I have a problem with OSPF in transparent mode. I have two bulding connected by a wireless link. Currently the wireless bridges are connectet to two switch (Extreme) on witch is running an OSPF protocol. All is working fine. Now I need to insert two firewall to make a VPN IPSEC Tunnel. To avoid changing my architecture I want to insert two fortigate configured in transparent mode betwen each switch and its relative wireless bridge. The problem is that OSPF doesn' t work anymore. It seems that in transparent mode OSPF packets don' t pass through the firewall. I don' t think that it' s a problem related to the VPN because I have tried to use one fortigate in trasparent mode betwen the two switchs and OSPF doesn' t work. Can anyone halp me? Thanks.

[red_adair]

by default Multicast " firewall" is deny. In order to make OSPF work you need to let MCast pass, hence write a MCast policy. int1 -> int2 pass and int2 -> int1 pass your friend: #config firew multicast ..... OR - there is a global command to simply pass MCast to/from everywhere. -R.