Administrator Guide

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.
NOTE: IPv6 and OSPFv3 do not support Multi-Process OSPF. You can only enable a single OSPFv3 process. To create
multiple OSPF processes you need to have multiple VRFs on a switch.
Set the time interval between when the switch receives a topology change and starts a shortest path first (SPF) calculation.
timers spf delay holdtime
NOTE: To set the interval time between the reception of topology changes and calculation of SPF in milli seconds, use the
timers spf delay holdtime msec command.
Example
Dell#conf
Dell(conf)#ipv6 router ospf 1
Dell(conf-ipv6-router_ospf)#timer spf 2 5 msec
Dell(conf-ipv6-router_ospf)#
Dell(conf-ipv6-router_ospf)#show config
!
ipv6 router ospf 1
timers spf 2 5 msec
Dell(conf-ipv6-router_ospf)#
Dell(conf-ipv6-router_ospf)#end
Dell#
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
ipv6 address ipv6 address
IPv6 addresses are normally written as eight groups of four hexadecimal digits; separate each group by a colon (:).
The format is A:B:C::F/128.
2. Bring up the interface.
CONF-INT-type slot/port mode
no shutdown
Assigning Area ID on an Interface
To assign the OSPFv3 process to an interface, use the following command.
The ipv6 ospf area command enables OSPFv3 on an interface and places the interface in the specified area. Additionally,
the command creates the OSPFv3 process with ID on the router. OSPFv2 requires two commands to accomplish the same
tasks — the router ospf command to create the OSPF process, then the network area command to enable OSPFv2 on
an interface.
Open Shortest Path First (OSPFv2 and OSPFv3)
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