OSPF Cost question

I have a hub and spoke frame cloud setup. The clockrate is set to 56k.

I run "ip ospf int s0" and the cost is 64. Why is it 64 when it should be 1785 for a 56k line?

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Comments

keenon

default for T1

networker050184

Dilbert65 wrote: »

I have a hub and spoke frame cloud setup. The clockrate is set to 56k.

I run "ip ospf int s0" and the cost is 64. Why is it 64 when it should be 1785 for a 56k line?

The cost uses the bandwidth configured on an interface. Use the show interface x/x command to see what the value is. To adjust it use the interface bandwidth command.

Dilbert65

So ospf does not really look at the actual speed of the link, just what its default is?

IE fast0/0 has been set for "speed 10" , ospf still "sees" it as cost:1

networker050184

It uses the interface bandwidth which is set with the bandwidth command. If you don't manually set the bandwidth it uses the default of the interface.

Dilbert65

Ah ok I get it. I noticed that in my CCNA studies but did not worry about it. Starting my BSCI labs and it started bugging me.

Thank you for the information.