OSPFv3 Configuration Example on Cisco IOS

ospfv3-topology-ipcisco

OSPFv3 Configuration Example on Cisco IOS

OSPFv3 is the IPv6 cabaple version of OSPF. The previous version of OSPF was OSPFv2. OSPFv2 is for IPv4.

Here, we will configure OSPFv3 for the below topology. As you can see, there are three areas and six routers in this topology.

ospfv3-topology-ipcisco

For OSPFv3 configuration, we will follow the below steps one by one:

1. Enabling Global IPv6 Routing
2. Enabling Interfaces for IPv6
3. IPv6 Address Configuration
4. Configuring OSPFv3 Process
5. Router ID Configuration
6. Adding Interfaces to OSPFv3 Process and Areas
7. Clear ipv6 ospf process
8. Verification

Firstly, we will enable global IPv6 Routing on each Router with “ipv6 unicast-routing” command.

Router 1 # config terminal
Router 1 (config) # ipv6 unicast-routing
Router 2 # config terminal
Router 2 (config) # ipv6 unicast-routing
Router 3 # config terminal
Router 3 (config) # ipv6 unicast-routing
Router 4 # config terminal
Router 4 (config) # ipv6 unicast-routing
Router 5 # config terminal
Router 5 (config) # ipv6 unicast-routing
Router 6 # config terminal
Router 6 (config) # ipv6 unicast-routing

Secondly, we will do the IPv6 address configurationWe will do this with “ipv6 enable” and “ipv6 address -ipv6address- eui-64“ commands. The Link-local addresses required for neighbourship, will produces with this

Router 1 (config) # interface fa0/0
Router 1 (config-if) # ipv6 enable
Router 1 (config-if) # ipv6 address 2001:1234:0:111::1/64 eui-64
Router 1 (config-if) # interface fa0/1
Router 1 (config-if) # ipv6 enable
Router 1 (config-if) # ipv6 address 2001:1234:0:222::1/64 eui-64
Router 1 (config-if) # interface fa0/1
Router 1 (config-if) # ipv6 enable
Router 1 (config-if) # ipv6 address 2001:1234:0:555::1/64 eui-64
Router 2 (config) # interface fa0/0
Router 2 (config-if) # ipv6 enable
Router 2 (config-if) # ipv6 address 2001:1234:0:111::2/64 eui-64
Router 2 (config-if) # interface fa0/1
Router 2 (config-if) # ipv6 enable
Router 2 (config-if) # ipv6 address 2001:1234:0:333::1/64 eui-64
Router 3 (config) # interface fa0/0
Router 3 (config-if) # ipv6 enable
Router 3 (config-if) # ipv6 address 2001:1234:0:444::2/64 eui-64
Router 3 (config-if) # interface fa0/1
Router 3 (config-if) # ipv6 enable
Router 3 (config-if) # ipv6 address 2001:1234:0:333::2/64 eui-64
Router 3 (config-if) # interface fa0/1
Router 3 (config-if) # ipv6 enable
Router 3 (config-if) # ipv6 address 2001:1234:0:666::1/64 eui-64
Router 4 (config) # interface fa0/0
Router 4 (config-if) # ipv6 enable
Router 4 (config-if) # ipv6 address 2001:1234:0:444::1/64 eui-64
Router 4 (config-if) # interface fa0/1
Router 4 (config-if) # ipv6 enable
Router 4 (config-if) # ipv6 address 2001:1234:0:222::2/64 eui-64
Router 5 (config) # interface fa0/0
Router 5 (config-if) # ipv6 enable
Router 5 (config-if) # ipv6 address 2001:1234:0:555::2/64 eui-64
Router 6 (config) # interface fa0/0
Router 6 (config-if) # ipv6 enable
Router 6 (config-if) # ipv6 address 2001:1234:0:666::2/64 eui-64

Now, it is time to configure OSPFv3 process under each router. We will use the process number 1 here. Beside, we will configure a router ID in IPv4 format. Because for both OSPv2 and OSPv3, Router ID is in IPv4 format.

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Lesson tags: ospf, OSPFv3, routing
Back to: CCNP Route > OSPF

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