Administrator Guide

The OSPFv3 ipv6 ospf area command enables OSPFv3 on the interface and places the interface in an
area. With OSPFv2, two commands are required to accomplish the same tasks — the router ospf
command to create the OSPF process, then the network area command to enable OSPF on an interface.
NOTE: The OSPFv2 network area command enables OSPF on multiple interfaces with the single
command. Use the OSPFv3 ipv6 ospf area command on each interface that runs OSPFv3.
All IPv6 addresses on an interface are included in the OSPFv3 process that is created on the interface.
Enable OSPFv3 for IPv6 by specifying an OSPF process ID and an area in INTERFACE mode. If you have not
created an OSPFv3 process, it is created automatically. All IPv6 addresses configured on the interface are
included in the specified OSPF process.
Set the time interval between when the switch receives a topology change and starts a shortest path first
(SPF) calculation
Use timers spf delay holdtime
Example
Dell#
Dell#conf
Dell(conf)#ipv6 router ospf 1
Dell(conf-ipv6-router_ospf)#timer spf 2 5
Dell(conf-ipv6-router_ospf)#
Dell(conf-ipv6-router_ospf)#show config
!
ipv6 router ospf 1
timers spf 2 5
Dell(conf-ipv6-router_ospf)#
Dell(conf-ipv6-router_ospf)#end
Dell#
NOTE: IPv6 and OSPFv3 do not support Multi-Process OSPF. You can only enable a single OSPFv3
process.
Enabling IPv6 Unicast Routing
To enable IPv6 unicast routing, use the following command.
• Enable IPv6 unicast routing globally.
CONFIGURATION mode
ipv6 unicast routing
Assigning IPv6 Addresses on an Interface
To assign IPv6 addresses to an interface, use the following commands.
1 Assign an IPv6 address to the interface.
CONF-INT-type slot/port mode
Open Shortest Path First (OSPFv2 and OSPFv3) 657