Okay, so now Ral1 is neighbors with Core 2 and Core 3.
(Typing) Core 2 is neighbors with Core 1 and Ral1,
but not Core 3, and this CDP here shows that it was connected to gigabit 02.
There's no 02 here so 10.10 .10 .9, everything,
the OSPF configuration there is normal.
It has authentication set up here.
These are the correct commands, and this is an non-configuration command.
Of course, these are the two right ones if you're using MD5 authentication,
and this is connected to Core 3.
(Typing) You can see that these two commands are the same
commands; ip ospf authentication message-digest,
and ip ospf message-digest-k1 1, so it's the same key 1 MD5,
but the passwords aren't the same.
On Core 3 the password is Password with a capital P,
and on Core 2 it's password with a lowercase p.
So both of them are exchanging information on that interface.
Well, not exchanging,
but they're sending information or packets on that interface between the two,
but they're receiving them and the authentication information
that's in that OSPF header is not matching so each one of the
devices is just dropping it on both sides.
So if we, let's just take the lowercase version. (Typing)