Can someone explain this one to me.
Two routers in the same area configured for authentication the following way:
On both devices:
router ospf 100
area 50 authentication
ip ospf message-digest-key 1 md5 key xx
This works because the two routers become OSPF neighbors but I don't get how they are working as Type 1 authentication is configured at router level, which does not use MD5, yet the interface is configured for a message-digest-key which would imply that Type2 authentication should be running on it but it isn't, it will be Type 1 as defined under the router ospf process.
So how is this working, or am I missing something?