EIGRP OSPF ISSUES

[fmugambi]

Hi team,

Here is my topology,

apparently sw0 and and core sw 1 have eigrp as 10 between them. core sw 1 has knowledge of the rest ospf network. i have redistibuted eigrp 10 on ospf 30 and ospf 30 on eigrp 10.

sw0 sees core sw 1 as eigrp ne, but has no eigrp routes.

why would this be the issue.

yet core sw has 10.185.40.100 on its route table to reach 10.185.40.100. but 10.185.14.100 cannot reach 10.185.40.100 yet its default g/w can.

ideally eigrp seems not to work.

where or what would i be missing?

[fmugambi]

core sw 1 configs

Switch#sh run | s eigrp

router eigrp 10

redistribute ospf 30

network 172.30.254.0 0.0.0.3

redistribute eigrp 10 subnets

Switch#sh run | s ospf

ip ospf 30 area 30

ip ospf 30 area 30

redistribute ospf 30

[fmugambi]

sw 0 configs,

Switch#sh run | s eigrp

router eigrp 10

redistribute connected

network 172.30.254.0 0.0.0.3

[MHM Cisco World]

Show ip eigrp

Show ip eigrp topology zero

Show ip eigrp topology all-links

MHM

[fmugambi]

this is core sw 1

Switch#sh ip route eigrp

10.0.0.0/24 is subnetted, 3 subnets

D EX 10.185.40.0 [170/2560000512] via 172.30.254.1, 00:01:42, GigabitEthernet1/0/4

[fmugambi]

this is sw 0,

[MHM Cisco World]

Can you provide the output of other commands 

MHM

[fmugambi]

this is core sw 1,

this is sw 0,

[MHM Cisco World]

check below

MHM

[fmugambi]

i didnt get this, step by step please.

[MHM Cisco World]

Check below

MHM

[fmugambi]

apparently on core sw 1 ,i red connected, and 10.185.40.100 can now reach .14/24 but not able to reach fur end 34.10

core sw 2 has this 10.185.40.0 route but sw 0 does not have a route to 10.188.34.10. yet the r5 and r6 know these routes.

still confused.

[fmugambi]

sw0,

core sw 1,

core sw 2

[MHM Cisco World]

you redistribute the OSPF into EIGRP in SW1Core BUT you dont specify the metric.
this I think bad thing of EIGRP if you dont specify the metric the EIGRP no redi the prefix.

redistribute ospf 30 metric 1000 100 255 1 1500

note:- if 10.85.14.0 is not appear in SW0 please mention that (after add metric  above with redi ospf into eigrp)

[David Ruess]

@MHM Cisco World is correct in that when you redistribute into EIGRP (most cases) you need to supply a "seed" metric as OSPF/EIGRP metrics are not compatible.

Secondly on Core SW1 since its the redistribution point make sure you understand that its locally connected networks (like 10.185.14.0) wont be redistributed into one or the other. That's because its learning the networks from connected routes and not a routing protocol. You would likely need to redistribute connected on the routing protocols as well.

-David