Simple IPv6 network with OSPF as IGP
From IPFlow Netflow Collector
IPv6 with OSPF as IGP Example
This is a simple example of IPv6 network with OSPF as IGP (using Dynamips and GNS3).
Author: Christophe Fillot - 08-Nov-2007
| Table of contents |
Topology
IOS configurations
- R0 (http://www.ipflow.utc.fr/configs/IPv6_OSPF/R0.cfg)
- R1 (http://www.ipflow.utc.fr/configs/IPv6_OSPF/R1.cfg)
- R2 (http://www.ipflow.utc.fr/configs/IPv6_OSPF/R2.cfg)
- R3 (http://www.ipflow.utc.fr/configs/IPv6_OSPF/R3.cfg)
Dynamips/Dynagen/GNS3 configuration
You can use this configuration file (http://www.ipflow.utc.fr/configs/IPv6_OSPF/ipv6_ospf.net) directly with Dynagen or GNS3. Change the working directory and Cisco IOS image path to match your needs.
Configuration
Enable IPv6 routing globally:
ipv6 unicast-routing ipv6 cef
Create the IPv6 OSPFv3 router process and enable OSPF on the interfaces:
ipv6 router ospf 100 ! interface FastEthernet0/0 ipv6 enable ipv6 ospf 100 area 0 !
Authentication configuration (not mandatory):
ipv6 router ospf 100 area 0 authentication ipsec spi 300 sha1 96114CE4D499D9BCAFA25C91657739FD52EACBA !
You can also configure encryption. The settings can be applied for the complete area or for each interface (allowing greater security with the possibity to set different parameters for each interface). The settings (SPI and key) must be the same between 2 neighbors.
Output of some commands
R0 IPv6 routing table:
R0#sh ipv6 route
IPv6 Routing Table - 5 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
LC 2007:1000::/128 [0/0]
via ::, Loopback0
O 2007:1000::1/128 [110/1]
via FE80::C801:14FF:FEAC:0, FastEthernet0/0
O 2007:1000::2/128 [110/1]
via FE80::C802:14FF:FEAC:0, FastEthernet1/0
O 2007:1000::3/128 [110/1]
via FE80::C803:14FF:FEAD:0, FastEthernet2/0
L FF00::/8 [0/0]
via ::, Null0
OSPFv3 neighbors:
R0#sh ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 10.10.0.3 1 FULL/DR 00:00:39 4 FastEthernet2/0 10.10.0.2 1 FULL/DR 00:00:34 4 FastEthernet1/0 10.10.0.1 1 FULL/DR 00:00:35 4 FastEthernet0/0
OSPFv3 database:
R0#sh ipv6 ospf database
OSPFv3 Router with ID (10.10.0.0) (Process ID 100)
Router Link States (Area 0)
ADV Router Age Seq# Fragment ID Link count Bits
10.10.0.0 163 0x80000004 0 3 None
10.10.0.1 170 0x80000003 0 2 None
10.10.0.2 45 0x80000005 0 2 None
10.10.0.3 45 0x80000006 0 3 None
Net Link States (Area 0)
ADV Router Age Seq# Link ID Rtr count
10.10.0.1 171 0x80000001 4 2
10.10.0.2 170 0x80000001 4 2
10.10.0.2 45 0x80000001 5 2
10.10.0.3 170 0x80000001 4 2
10.10.0.3 175 0x80000001 5 2
Link (Type-8) Link States (Area 0)
ADV Router Age Seq# Link ID Interface
10.10.0.0 213 0x80000001 6 Fa2/0
10.10.0.3 215 0x80000001 4 Fa2/0
10.10.0.0 214 0x80000001 5 Fa1/0
10.10.0.2 216 0x80000001 4 Fa1/0
10.10.0.0 214 0x80000001 4 Fa0/0
10.10.0.1 216 0x80000001 4 Fa0/0
Intra Area Prefix Link States (Area 0)
ADV Router Age Seq# Link ID Ref-lstype Ref-LSID
10.10.0.0 214 0x80000001 0 0x2001 0
10.10.0.1 216 0x80000001 0 0x2001 0
10.10.0.2 216 0x80000001 0 0x2001 0
10.10.0.3 216 0x80000001 0 0x2001 0
