[c-nsp] IPv6 redistribute bgp into ospf

[Tobias König]

Hi there

I ran into a problem when trying to redistribute a bgp ipv6 route into ospf.

The scenario looks the following:

router0 <-- ospf (10:10:10::4/126) --> router1 <-- bgp (10:10:10::/126) -->
router2

Router2 advertises an ipv6 prefix (20:20:20::/48) via ibgp to router1, this
part works flawlessly.
Router1 should then redistribute that route into its ospf process and
advertise it to router0, which unfortunately it doesn't.
(When redistributing a static route on router1 into ospf, router0 sees that
prefix).

Maybe someone of you got any idea of what could be wrong or can provide a
hint on where to find detailed infos.

You can find the according configs at the bottom. The config was tested with
the following platforms and IOS -> always the same result:
c2800nm-advipservicesk9-mz.124-19
c3640-js-mz.124-23.bin
c3640-ik9s-mz.124-19.bin

Thanks in advance for any inputs.

Cheers

Tobias


---- sh ipv6 route
R0#sh ipv6 route
C   10:10:10::4/126 [0/0]
     via ::, FastEthernet0/0

R1#sh ipv6 route
C   10:10:10::/126 [0/0]
     via ::, FastEthernet1/0
C   10:10:10::4/126 [0/0]
     via ::, FastEthernet0/0
B   20:20:20::/48 [200/0]
     via 10:10:10::2

R2#sh ipv6 route
B   ::/0 [200/0]
     via 10:10:10::1
C   10:10:10::/126 [0/0]
     via ::, FastEthernet0/0
S   20:20:20::/48 [1/0]
     via ::, Null0

Config:
=====
router0:
----
interface FastEthernet0/0
 ipv6 address 10:10:10::5/126
 ipv6 enable
 ipv6 ospf 1 area 0

ipv6 router ospf 1
 router-id 10.10.10.0
 log-adjacency-changes
 passive-interface default
 no passive-interface FastEthernet0/0
----

router1:
----
interface FastEthernet0/0
 ipv6 address 10:10:10::6/126
 ipv6 enable
 ipv6 ospf 1 area 0
!
interface FastEthernet1/0
ipv6 address 10:10:10::1/126
 ipv6 enable
!
router bgp 10
 bgp router-id 10.10.10.1
 bgp log-neighbor-changes
 neighbor 10:10:10::2 remote-as 10
 neighbor 10:10:10::2 version 4
 !
 address-family ipv4
  no neighbor 10:10:10::2 activate
  no auto-summary
  no synchronization
 exit-address-family
 !
 address-family ipv6
  neighbor 10:10:10::2 activate
  neighbor 10:10:10::2 send-community
  neighbor 10:10:10::2 default-originate
  neighbor 10:10:10::2 soft-reconfiguration inbound
  no synchronization
 exit-address-family

ipv6 router ospf 1
 router-id 10.10.10.1
 log-adjacency-changes
 passive-interface default
 no passive-interface FastEthernet0/0
 redistribute bgp 10
----

router2:
----
interface FastEthernet0/0
 ipv6 address 10:10:10::2/126
 ipv6 enable
!
router bgp 10
 bgp router-id 10.10.10.2
 bgp log-neighbor-changes
 neighbor 10:10:10::1 remote-as 10
 neighbor 10:10:10::1 version 4
 !
 address-family ipv4
  no neighbor 10:10:10::1 activate
  no auto-summary
  no synchronization
 exit-address-family
 !
 address-family ipv6
  neighbor 10:10:10::1 activate
  neighbor 10:10:10::1 send-community
  neighbor 10:10:10::1 soft-reconfiguration inbound
  network 20:20:20::/48
 exit-address-family
!
ipv6 route 20:20:20::/48 Null0
----