DELL PC6224F User Manual

OSPF Commands

console(config-router)#area 10 virtual-link 

192.168.2.2 transmit-delay 40

By default, OSPF computes the link cost of each interface from the interface 

bandwidth. The link cost is computed as the ratio of a “reference bandwidth” 

to the interface bandwidth (ref_bw / interface bandwidth), where interface 

bandwidth is defined by the “bandwidth” command. Because the default 

reference bandwidth is 100 Mbps, OSPF uses the same default link cost for all 

interfaces whose bandwidth is 100 Mbps or greater. To change the reference 

bandwidth, use the auto-cost command, specifying the reference bandwidth 

in megabits per second. The different reference bandwidth can be 

independently configured for OSPFv2 and OSPFv3.

auto-cost reference-bandwidth 

ref_bw

•

ref_bw — The reference bandwidth in Mbps (Range: 1–4294967).

The default reference bandwidth is 100 Mbps.

OSPFv2 or OSPFv3 Router Configuration mode.

There are no user guidelines for this command.

The following example configures a reference bandwidth of 500 Mbps.
console(config-router)#auto-cost reference-bandwidth 500