P2P on EVERY Vlan

Routing & Switching OSPF
1

Anyone please help!!! The engineer before me configures ip ospf network point-to-point on every VLAN on every router and switch. I have never seen this type of configuration implemented. Granted we are working heavily with multicast but I dont think P2P Vlan effect multicast. Anyway, can anyone explain why would you need to configure every VLAN P2P.

example config: (this is done on every VLAN)

interface vlan xxx
ip addresss 198.168.17.x 255.255.255.252
ip pim sparse-mode
ip igmp version 3
ip ospf network point-to-point
ip ospf dead-interval 13
ip ospf hello-interval 1
ip ospf area 1
2

The only reason I can think of is if you only have two OSPF routers within the VLAN. Still, there is no good reason to switch to point-to-point instead of the default (broadcast) on multi-access networks like a VLAN. With two OSPF routers, this will work. As soon as you add a third OSPF router, you will see flapping neighbor adjacencies.