OSPF IPv6 Cisco IOS

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Configurering IPv6 OSPF

The following setup os used in the examples:

OSPFv3 Example
interface FastEthernet0/0
 ip address 10.0.0.1 255.255.255.0
 ipv6 address 2001:DB8:CAFE::1/64
 <notice>ipv6 ospf 1 area 1</notice>
!
interface Serial0/0/0
 ip address 192.168.0.1 255.255.255.252
 ipv6 address 2001:DB8:CAFE:100A::1/64
 <notice>ipv6 ospf 1 area 0</notice>
!
interface Serial0/0/1
 ip address 192.168.0.9 255.255.255.252
 ipv6 address 2001:DB8:CAFE:100B::1/64
 <notice>ipv6 ospf 1 area 0</notice>
!
ipv6 router ospf 1
 router-id <notice>0.0.0.1</notice>
 log-adjacency-changes
 passive-interface FastEthernet0/0

Testing

OSPFv3 Neighbors

R1#<input>show ipv6 ospf neighbor</input> 

Neighbor ID     Pri   State           Dead Time   Interface ID    Interface
0.0.0.2           0   FULL/  -        00:00:38    3               Serial0/0/0
0.0.0.3           0   FULL/  -        00:00:34    4               Serial0/0/1
R1#

OSPFv3 Database

R1#<input>show ipv6 ospf database</input> 
            OSPF Router with ID (0.0.0.1) (Process ID 1)

                Router Link States (Area 1)

ADV Router      Age         Seq#       Fragment ID  Link count Bits
0.0.0.1         566         0x80000002 0            0          B

                Inter Area Prefix Link States (Area 1)
ADV Router      Age         Seq#       Metric Prefix
0.0.0.1         582         0x80000001 64     2001:DB8:CAFE:100A::/64
0.0.0.1         572         0x80000002 64     2001:DB8:CAFE:100B::/64
0.0.0.1         489         0x80000003 65     2001:DB8:CAFE:1::/64
0.0.0.1         394         0x80000004 128    2001:DB8:CAFE:100C::/64
0.0.0.1         394         0x80000005 128    2001:DB8:CAFE:100D::/64
0.0.0.1         394         0x80000006 65     2001:DB8:CAFE:3::/64
0.0.0.1         325         0x80000007 129    2001:DB8:CAFE:2::/64

                Link (Type-8) Link States (Area 1)
ADV Router      Age         Seq#       Link ID    Interface
0.0.0.1         605         0x80000001 1          Fa0/0

                Intra Area Prefix Link States (Area 1)
ADV Router      Age         Seq#       Link ID    Ref-lstype  Ref-LSID
0.0.0.1         605         0x80000001 2          0x2001      0
            OSPF Router with ID (0.0.0.1) (Process ID 1)

                Router Link States (Area 0)

ADV Router      Age         Seq#       Fragment ID  Link count Bits
0.0.0.2         413         0x80000003 0            2          B
0.0.0.1         400         0x80000004 0            2          B
0.0.0.3         339         0x80000004 0            3          B
0.0.0.4         339         0x80000002 0            1          B

                Inter Area Prefix Link States (Area 0)
ADV Router      Age         Seq#       Metric Prefix
0.0.0.1         582         0x80000001 1      2001:DB8:CAFE::/64
0.0.0.2         503         0x80000001 1      2001:DB8:CAFE:1::/64
0.0.0.3         416         0x80000001 1      2001:DB8:CAFE:3::/64
0.0.0.4         343         0x80000001 1      2001:DB8:CAFE:2::/64

                Link (Type-8) Link States (Area 0)
ADV Router      Age         Seq#       Link ID    Interface
0.0.0.1         515         0x80000003 3          Se0/0/0
0.0.0.2         507         0x80000004 3          Se0/0/0
0.0.0.1         409         0x80000004 4          Se0/0/1
0.0.0.3         400         0x80000004 4          Se0/0/1

                Intra Area Prefix Link States (Area 0)
ADV Router      Age         Seq#       Link ID    Ref-lstype  Ref-LSID
0.0.0.1         579         0x80000002 2          0x2001      0
0.0.0.2         493         0x80000004 2          0x2001      0
0.0.0.3         399         0x80000003 2          0x2001      0
0.0.0.4         347         0x80000001 2          0x2001      0
R1#

IPv6 Routing table

R1#<input>show ipv6 route ospf</input> 
IPv6 Routing Table - 12 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
       U - Per-user Static route, M - MIPv6
       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
       D - EIGRP, EX - EIGRP external
OI  2001:DB8:CAFE:1::/64 [110/65]
     via FE80::260:5CFF:FEE4:DB6D, Serial0/0/0
OI  2001:DB8:CAFE:2::/64 [110/129]
     via FE80::260:2FFF:FEE5:C081, Serial0/0/1
OI  2001:DB8:CAFE:3::/64 [110/65]
     via FE80::260:2FFF:FEE5:C081, Serial0/0/1
O   2001:DB8:CAFE:100C::/64 [110/128]
     via FE80::260:2FFF:FEE5:C081, Serial0/0/1
O   2001:DB8:CAFE:100D::/64 [110/128]
     via FE80::260:2FFF:FEE5:C081, Serial0/0/1
R1#

show ipv6 protocols

R1#<input>show ipv6 protocols</input> 
IPv6 Routing Protocol is "connected"
IPv6 Routing Protocol is "ospf 1"
  Interfaces (Area 1)
    <notice>FastEthernet0/0</notice>
  Interfaces (Area 0)
    <notice>Serial0/0/0
    Serial0/0/1</notice>

R1#

Stub Areas

This output is from another example.

Stub ABR

This router havn't got any OSPF External Routes.

R1#<input>show run</input>
interface FastEthernet0/1
 ipv6 enable
 <notice>ipv6 ospf 1 area 0</notice>
!
interface FastEthernet1/0
 ipv6 enable
 <notice>ipv6 ospf 1 area 1</notice>
!
ipv6 router ospf 1
 router-id 0.0.0.1
 <notice>area 1 stub</notice>
!
R1#<input>show ipv route ospf</input>
IPv6 Routing Table - 7 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
       U - Per-user Static route
       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
O   2001::2/128 [110/1]
     via FE80::C801:9FF:FE90:6, FastEthernet0/0
O   2001::3/128 [110/2]
     via FE80::C801:9FF:FE90:6, FastEthernet0/0
     via FE80::C803:DFF:FE7C:8, FastEthernet0/1
O   2001::4/128 [110/1]
     via FE80::C803:DFF:FE7C:8, FastEthernet0/1
O   2001::5/128 [110/1]
     via FE80::C805:9FF:FEB4:8, FastEthernet1/0
R1#<input>show ipv protocols</input>
IPv6 Routing Protocol is "ospf 1"
  Interfaces (Area 0):
    FastEthernet0/1
    FastEthernet0/0
    Loopback0
  Interfaces (Area 1):
    FastEthernet1/0
  Redistribution:
    None
R1#

Stub Router

Event though we havn't got any external routes in our network we get a default gateway, on the stub network

R5#<input>show ipv protocols</input>
IPv6 Routing Protocol is "ospf 1"
  Interfaces (Area 1):
    FastEthernet0/0
    Loopback0
  Redistribution:
    None
R5#<input>show ipv route ospf</input>
IPv6 Routing Table - 8 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
       U - Per-user Static route
       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
<notice>OI  ::/0 [110/2]
     via FE80::C800:9FF:FE90:1C, FastEthernet0/0</notice>
OI  2001::1/128 [110/1]
     via FE80::C800:9FF:FE90:1C, FastEthernet0/0
OI  2001::2/128 [110/2]
     via FE80::C800:9FF:FE90:1C, FastEthernet0/0
OI  2001::3/128 [110/3]
     via FE80::C800:9FF:FE90:1C, FastEthernet0/0
OI  2001::4/128 [110/2]
     via FE80::C800:9FF:FE90:1C, FastEthernet0/0
R5#<input>show run | sec router ospf</input>
ipv6 router ospf 1
 router-id 0.0.0.5
 <notice>area 1 stub</notice>
R5#