cookbook flashy redist...

restart the topology to get rid of all the boogers...

r1#sh ip ospf
r1#

a clean slate...

add ospf area 0 to r1 and r2, ospf area 1 to r2 and r4, and eigrp 1 to r4 and r6, on the proper interfaces... don't forget the loopbacks...

if you watched your adjacencie's come up,  you already verified... but...

r1#sh ip route ospf

Gateway of last resort is not set

O IA  192.168.1.0/24 [110/782] via 10.1.1.2, 00:03:36, FastEthernet0/0

r4#sh ip route eigrp

Gateway of last resort is not set

      6.0.0.0/24 is subnetted, 1 subnets
D        6.6.6.0 [90/156160] via 172.16.1.1, 00:02:14, FastEthernet0/0

i just love a good reusable topology...

redistribute both ways...

 router eigrp 1
 network 172.16.1.0 0.0.0.255
 redistribute ospf 1 metric 1 0 1 1 1500

router ospf 1
 redistribute eigrp 1 subnets
 network 192.168.1.0 0.0.0.255 area 1

r1#sh ip route ospf

Gateway of last resort is not set

      6.0.0.0/24 is subnetted, 1 subnets
O E2     6.6.6.0 [110/20] via 10.1.1.2, 00:01:19, FastEthernet0/0
      172.16.0.0/24 is subnetted, 1 subnets
O E2     172.16.1.0 [110/20] via 10.1.1.2, 00:01:19, FastEthernet0/0
O IA  192.168.1.0/24 [110/782] via 10.1.1.2, 00:10:08, FastEthernet0/0

r6#sh ip route eigrp

Gateway of last resort is not set

      1.0.0.0/24 is subnetted, 1 subnets
D EX     1.1.1.0 [170/2560002560] via 172.16.1.2, 00:07:18, FastEthernet0/0
      10.0.0.0/24 is subnetted, 1 subnets
D EX     10.1.1.0 [170/2560002560] via 172.16.1.2, 00:07:18, FastEthernet0/0
D EX  192.168.1.0/24
           [170/2560002560] via 172.16.1.2, 00:07:18, FastEthernet0/0

now, just because it sucks so bad, put authentication between all ospf neighbors, and the eigrp neighbors...

int f0/0
ip ospf authenti  message-digest
ip ospf authentication-key suck-key

and watch the adjacencies go down...

then do it on the serials...

int s1/1
ip ospf authenti message
ip ospf authentication-k suck-key

note: key chains are used for eigrp and rip only... ospf authenticates differently, as seen above...

eigrp

key chain suck-key
key 1
key-string suck-key

int f0/0
ip authenti mode eigrp 1 md5
ip authent key-chain eigrp 1 suck-key

and watch them come back up... ospf and eigrp are configured differently...  of course they are... and you just have to memorize this garbage...

it is an awful lot of effort for so little... but this is the life we have chosen, so suck it up... for me, i will have to force myself to put a nasty key chain on every adjacency i make so it is burned in my brain... this is one spot where points could be easily lost, and time wasted...