What is OSPFv3 ? Explanation with Examples

By | 9th November 2015

What is OSPFv3 ?

OSPFv3 is a link-state routing protocols as its predecessor in IPv4.  It still uses the autonomous areas to separate networks into areas.

OSPFv3 uses an IPv6 multicast address range of FF02::5 for ospf routes and FF02::6 for ospf designated routers when sending updates and acknowledgements.

OSPF routers generate routing updates only when a change occurs in the network topology.

When a route link changes state, the network device that detects the change creates an link State Advertisement (LSA) and forwards it to the DR using FF02::6 multicast address who informs all devices within an area using FF02::5 multicast address. Each device then updates its Link State Database.

One of the new features of OSPFv3 is the ability to assign the router ID, area ID and link-state ID with a 32 bit value without IP addresses. This feature enables OSPFv3 to be routable over almost any network layer protocol. Like other IPv6 routing protocols – RIPng and EIGRPv6, you must enable it directly on the router interface for the process to work.

OSPFv3 Configuration Requirements.

*  Enable IPv6 unicast routing

*  Enable the OSPFv3 routing process

*  Enable OSPFv3 on the interface

*  Configure passive interfaces to suppress routing updates to and from an interface.


The interface configuration process is just to assign an ospfv3 process ID and area.


How to Configure OSPF Multiarea network.



Host Standby Router Protocol (HSRP)

IPv6 Explained


Virtual Router Redundancy Protocol (VRRP)

Gateway Load Balancing Protocol (GLBP)

Spanning Tree Protocol (STP)

VLAN Trunking Protocol (VTP)

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