Users Guide

NOTE: IPv6 and OSPFv3 do not support Multi-Process OSPF. You can only enable a single OSPFv3
process.
Set the time interval between when the switch receives a topology change and starts a shortest path first
(SPF) calculation.
timers spf delay holdtime
Example
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#
Enabling IPv6 Unicast Routing
To enable IPv6 unicast routing, use the following command.
• Enable IPv6 unicast routing globally.
CONFIGURATION mode
ipv6 unicast routing
Applying cost for OSPFv3
Change in bandwidth directly affects the cost of OSPF routes.
• Explicitly specify the cost of sending a packet on an interface.
INTERFACE mode
ipv6 ospf interface-cost
• interface-cost:The range is from 1 to 65535. Default cost is based on the bandwidth.
• Specify how the OSPF interface cost is calculated based on the reference bandwidth method. The cost of
an interface is calculated as Reference Bandwidth/Interface speed.
ROUTER OSPFv3
auto-cost [reference-bandwidth ref-bw]
To return to the default bandwidth or to assign cost based on the interface type, use the no auto-cost
[reference-bandwidth ref-bw] command.
• ref-bw: The range is from 1 to 4294967. The default is 100 megabits per second.
Open Shortest Path First (OSPFv2 and OSPFv3) 656