Example for Configuring Basic OSPFv3 Functions

This section describes how to configure basic OSPFv3 functions, including enabling OSPF on each router and specifying network segments in different areas.

Networking Requirements

On the network shown in Figure 1, all routers run OSPFv3. The entire AS is divided into three areas. DeviceB and DeviceC serve as ABRs to forward inter-area routes.

After the configuration is complete, each router should learn the routes to all network segments in the AS.

Figure 1 Networking for configuring OSPFv3 areas

Interfaces 1 through 3 in this example represent GE 0/1/0, GE 0/1/8, and GE 0/1/16, respectively.

Configuration Notes

When configuring basic OSPFv3 functions, note the following rules:

The backbone area is responsible for forwarding inter-area routes. In addition, the routing information between non-backbone areas must be forwarded through the backbone area. OSPFv3 defines the following rules for the backbone area:
- Connectivity must be available between non-backbone areas and the backbone area.
- Connectivity must be available over the backbone area.
The intervals at which Hello, Dead, and Poll packets are sent on the local interface must be the same as those on the remote interface. Otherwise, the OSPFv3 neighbor relationship cannot be established.

Configuration Roadmap

The configuration roadmap is as follows:

Enable basic OSPFv3 functions on each router.
Specify network segments in different areas.

Data Preparation

To complete the configuration, you need the following data:

Device Name	Router ID	Process ID	IPv6 Address
Device A	1.1.1.1	1	Area 1: 2001:DB8:4::1/64 and 2001:DB8:2::2/64
Device B	2.2.2.2	1	Area 0: 2001:DB8:1::1/64 Area 1: 2001:DB8:2::1/64
Device C	3.3.3.3	1	Area 0: 2001:DB8:1::2/64 Area 2: 2001:DB8:3::1/64
Device D	4.4.4.4	1	Area 2: 2001:DB8:3::2/64

Procedure

Assign an IPv6 address to each interface. For configuration details, see Configuration Files in this section.

Configure basic OSPFv3 functions.

# Configure DeviceA.

[*DeviceA] ospfv3
[*DeviceA-ospfv3-1] router-id 1.1.1.1
[*DeviceA-ospfv3-1] area 0.0.0.1
[*DeviceA-ospfv3-1] quit
[*DeviceA] interface gigabitethernet0/1/16
[*DeviceA-GigabitEthernet0/1/16] ospfv3 1 area 1
[*DeviceA-GigabitEthernet0/1/16] quit
[*DeviceA] interface gigabitethernet0/1/8
[*DeviceA-GigabitEthernet0/1/8] ospfv3 1 area 1
[*DeviceA-GigabitEthernet0/1/8] quit
[*DeviceA] commit

# Configure DeviceB.

[*DeviceB] ospfv3
[*DeviceB-ospfv3-1] router-id 2.2.2.2
[*DeviceB-ospfv3-1] area 0.0.0.0
[*DeviceB-ospfv3-1] area 0.0.0.1
[*DeviceB-ospfv3-1] quit
[*DeviceB] interface gigabitethernet0/1/0
[*DeviceB-GigabitEthernet0/1/0] ospfv3 1 area 0
[*DeviceB-GigabitEthernet0/1/0] quit
[*DeviceB] interface gigabitethernet0/1/8
[*DeviceB-GigabitEthernet0/1/8] ospfv3 1 area 1
[*DeviceB-GigabitEthernet0/1/8] quit
[*DeviceB] commit

# Configure DeviceC.

[*DeviceC] ospfv3
[*DeviceC-ospfv3-1] router-id 3.3.3.3
[*DeviceB-ospfv3-1] area 0.0.0.0
[*DeviceB-ospfv3-1] area 0.0.0.2
[*DeviceC-ospfv3-1] quit
[*DeviceC] interface gigabitethernet 0/1/0
[*DeviceC-GigabitEthernet0/1/0] ospfv3 1 area 0
[*DeviceC-GigabitEthernet0/1/0] quit
[*DeviceC] interface gigabitethernet 0/1/8
[*DeviceC-GigabitEthernet0/1/8] ospfv3 1 area 2
[*DeviceC-GigabitEthernet0/1/8] quit
[*DeviceC] commit

# Configure DeviceD.

[*DeviceD] ospfv3
[*DeviceD-ospfv3-1] router-id 4.4.4.4
[*DeviceB-ospfv3-1] area 0.0.0.2
[*DeviceD-ospfv3-1] quit
[*DeviceD] interface gigabitethernet 0/1/8
[*DeviceD-GigabitEthernet0/1/8] ospfv3 1 area 2
[*DeviceD-GigabitEthernet0/1/8] quit
[*DeviceD] commit

Verify the configuration.

# Display the OSPFv3 neighbors of DeviceB.

[*DeviceB] display ospfv3 peer
   OSPFv3 Process (1)

   OSPFv3 Area (0.0.0.1)
   Neighbor ID    Pri   State       Dead Time   Interface               Instance ID
   1.1.1.1        1     Full/ -     00:00:34    GigabitEthernet0/1/8    0

   OSPFv3 Area (0.0.0.0)
   Neighbor ID    Pri   State       Dead Time   Interface               Instance ID
   3.3.3.3        1     Full/ -     00:00:32    GigabitEthernet0/1/0    0

# Display the OSPFv3 neighbors of DeviceC.

[*DeviceC] display ospfv3 peer
   OSPFv3 Process (1)

   OSPFv3 Area (0.0.0.0)
   Neighbor ID    Pri   State       Dead Time   Interface                Instance ID
   2.2.2.2        1     Full/ -     00:00:37    GigabitEthernet0/1/0     0

   OSPFv3 Area (0.0.0.2)
   Neighbor ID    Pri   State       Dead Time   Interface                Instance ID
   4.4.4.4        1     Full/ -     00:00:33    GigabitEthernet0/1/8     0

# Display the OSPFv3 routing table of DeviceD.

[*DeviceD] display ospfv3 routing
OSPFv3 Process (1)

   Destination                                   Metric
     Next-hop
  IA 2001:DB8:1::/64                                     2
           via FE80::1572:0:5EF4:1, GigabitEthernet0/1/8
  IA 2001:DB8:2::/64                                     3
           via FE80::1572:0:5EF4:1, GigabitEthernet0/1/8
     2001:DB8:3::/64                                     1
           directly-connected, GigabitEthernet0/1/8
  IA 2001:DB8:4::/64                                     4
           via FE80::1572:0:5EF4:1, GigabitEthernet0/1/8

Configuration Files

DeviceA configuration file

#
sysname DeviceA
#
interface GigabitEthernet0/1/8
 undo shutdown
 ipv6 enable
 ipv6 address 2001:db8:2::2/64
 ospfv3 1 area 0.0.0.1
#
interface GigabitEthernet0/1/16
 undo shutdown
 ipv6 enable
 ipv6 address 2001:db8:4::1/64
 ospfv3 1 area 0.0.0.1
#
ospfv3 1
 router-id 1.1.1.1
 area 0.0.0.1
#
return

DeviceB configuration file

#
sysname DeviceB
#
interface GigabitEthernet0/1/0
 undo shutdown
 ipv6 enable
 ipv6 address 2001:db8:1::1/64
 ospfv3 1 area 0.0.0.0
#
interface GigabitEthernet0/1/8
 undo shutdown
 ipv6 enable
 ipv6 address 2001:db8:2::1/64
 ospfv3 1 area 0.0.0.1
#
ospfv3 1
 router-id 2.2.2.2
 area 0.0.0.0
 area 0.0.0.1
#
return

DeviceC configuration file

#
sysname DeviceC
#
interface GigabitEthernet0/1/0
 undo shutdown
 ipv6 enable
 ipv6 address 2001:db8:1::2/64
 ospfv3 1 area 0.0.0.0
#
interface GigabitEthernet0/1/8
 undo shutdown
 ipv6 enable
 ipv6 address 2001:db8:3::1/64
 ospfv3 1 area 0.0.0.2
#
ospfv3 1
 router-id 3.3.3.3
 area 0.0.0.0
 area 0.0.0.2
#
return

DeviceD configuration file

#
sysname DeviceD
#
interface GigabitEthernet0/1/8
 undo shutdown
 ipv6 enable
 ipv6 address 2001:db8:3::2/64
 ospfv3 1 area 0.0.0.2
#
ospfv3 1
 router-id 4.4.4.4
 area 0.0.0.2
#
return