From: Peter van Oene (pvo@usermail.com)
Date: Fri Dec 19 2003 - 12:36:56 GMT-3
At 07:23 PM 12/18/2003, kasturi cisco wrote:
>Group,
>
>Please help...I have a case which looks simple and dont know why it is
>not working.Tried researching ..in vain. i know by default the NSSA
>routes get translated to type-5 and redistributed to other OSPF areas.
>Has this changed..using ver 12.2(10) on routers.
>
>------EIGRP/RIP-------R12 ------nssa----- R8------area 0------- R4
>area 700
>
>R8 is the Hub of Hub and spoke. R8 sees the NSSA routes as N2 but does
>not seem to distribute in into Area 0. Here are the relevant configs.
Any chance your EIGRP network, or another routing protocol extends to
R4? This may be relevant as I expect the Type 7 is translated, but the
forwarding address for it may not be currently being resolved via an OSPF
IA route.
Check the LSDB on R4 and look for the type 5 in the LSDB and see if the
"routing bit is set". If it isn't there, than you are back to figuring out
ABR issues. However, if it is there, and the bit isn't set, look at the
forwarding address and then do a "show ip route" for the forwarding
address. If the route that comes up isn't an OSPF route, than that is your
issue. OSPF is pretty picky on how it resolves forwarding address for type
5's and only trusts itself.
Pete
>R12:
>
>router ospf 100
>redistribute eigrp 100 subnets route-map e2o
>network 172.16.15.0 0.0.0.255 area 700
>area 700 authentication
>area 700 nssa
>
>R8:
>router ospf 100
> router-id 172.16.5.5
> log-adjacency-changes
> area 0 authentication message-digest
> area 700 authentication
> area 700 nssa no-summary
> area 700 range 172.16.15.0 255.255.255.0
> network 172.16.15.0 0.0.0.255 area 700
> network 172.16.45.0 0.0.0.255 area 0
> neighbor 172.16.45.7
> neighbor 172.16.45.4
>
>r8#i ospf | inc N2
>O N2 172.16.55.0/24 [110/20] via 172.16.15.1, 01:54:51, Serial1/0.1
>O N2 172.16.40.0/24 [110/20] via 172.16.15.1, 01:54:51, Serial1/0.1
>O N2 172.16.30.0/24 [110/20] via 172.16.15.1, 01:54:51, Serial1/0.1
>O N2 172.16.16.0/27 [110/20] via 172.16.15.1, 01:54:51, Serial1/0.1
>O N2 172.16.10.0/24 [110/20] via 172.16.15.1, 01:54:51, Serial1/0.1
>O N2 172.16.1.0/24 [110/20] via 172.16.15.1, 01:54:51, Serial1/0.1
>r8#
>
>But R4 does not see it
>
>Thanks for your help.
>
>Good Luck,
>Kasturi.
>
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