Hello and good afternoon
well i we have to router sending hello to the multicast 18.104.22.168 cisco 800 series in both sides, can i form an adjacency between them even if a sonicwall is between the, like sending their hello to the multicast address i recall in linux you can set the ip forwarding bit in -> /car/proc/sys/net/ipv4/ip.forwarding
Maybe with firewall rule?
here is the drawing:
-+++++++++- -+++++++++- Cisco 800--->Dedicated link<---->Sonicwall <-----> LAN Cisco 2900 -+++++++++- X4 no Subinterface X0 no Subinterface -+++++++++-