Hi,
I'm deploying OSPFv3 AF and have trouble injecting a default route (conditionally) with a NSSA. I'm trying to do this on a CE as we have firewalls connected here.
The below scenario works with OSPFv2 by the way.
The basic configuration is this:
!PE:
ipv6 unicast-routing
!
interface FastEthernet1/0
ip address 10.0.12.1 255.255.255.0
speed auto
duplex auto
ipv6 enable
ospfv3 12 ipv6 area 12
!
router ospfv3 12
!
address-family ipv6 unicast
area 12 nssa
exit-address-family
!
!CE:
ipv6 unicast-routing
!
interface FastEthernet1/0
description -> PE
ip address 10.0.12.2 255.255.255.0
speed auto
duplex auto
ipv6 enable
ospfv3 12 ipv6 area 12
!
router ospfv3 12
!
address-family ipv6 unicast
area 12 nssa default-information-originate
exit-address-family
!
ipv6 route ::/0 Null0
! CE show outputs:
CE#sh ospfv3 12 ipv6 nei
OSPFv3 12 address-family ipv6 (router-id 2.2.2.2)
Neighbor ID Pri State Dead Time Interface ID Interface
1.1.1.1 1 FULL/BDR 00:00:34 3 FastEthernet1/0
CE#sh ospfv3 12 ipv6 data
OSPFv3 12 address-family ipv6 (router-id 2.2.2.2)
Router Link States (Area 12)
ADV Router Age Seq# Fragment ID Link count Bits
1.1.1.1 389 0x80000002 0 1 None
2.2.2.2 388 0x80000003 0 1 E
Net Link States (Area 12)
ADV Router Age Seq# Link ID Rtr count
2.2.2.2 388 0x80000001 3 2
Link (Type-8) Link States (Area 12)
ADV Router Age Seq# Link ID Interface
1.1.1.1 397 0x80000002 3 Fa1/0
2.2.2.2 448 0x80000002 3 Fa1/0
CE#
! PE show output:
PE#sh ipv6 route
IPv6 Routing Table - default - 1 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
B - BGP, R - RIP, H - NHRP, I1 - ISIS L1
I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary, D - EIGRP
EX - EIGRP external, ND - ND Default, NDp - ND Prefix, DCE - Destination
NDr - Redirect, O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1
OE2 - OSPF ext 2, ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2, l - LISP
L FF00::/8 [0/0]
via Null0, receive
PE#
If I do a redist connected on the CE, it clears the P-bit and I see a default route (unconditionally) on the PE:
*Apr 14 08:42:31.855: %OSPFv3-4-NSSA_NO_FA: OSPF process 12 lacks forwarding address for type 7 LSA 0.0.0.0 in NSSA 12 - P-bit cleared
Now on the PE I see:
PE#sh ipv6 route
IPv6 Routing Table - default - 2 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
B - BGP, R - RIP, H - NHRP, I1 - ISIS L1
I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary, D - EIGRP
EX - EIGRP external, ND - ND Default, NDp - ND Prefix, DCE - Destination
NDr - Redirect, O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1
OE2 - OSPF ext 2, ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2, l - LISP
ON2 ::/0 [110/1]
via FE80::C803:5FF:FEAC:1C, FastEthernet1/0
L FF00::/8 [0/0]
via Null0, receive
PE#
The question is:
How do I conditionally inject a default route with OSPFv3 AF NSSA?
Thanks
/JZ
