02-05-2007 09:13 AM - edited 03-03-2019 03:37 PM
Hi expert,
From the book , there is a default ospf metric all all different interface type ( e.g. Fast ethernet, ethernet ....), buti don't know how can this value can be obtained
Let 's say, the formula is cost = 10 to the power 8 / BW
if ethernet interface, then cost = 10 to the power 8 / 10 to the power 6, the result will be 10 to the power 2
So , how come the book answer of cost 10 come out ?
Solved! Go to Solution.
02-05-2007 10:23 AM
Hi
The formula for calculating OSPF cost is:-
10 to the power 8 / BW in bits/sec
So
Bandwidth calculation:
Ethernet = 10Mbits per sec = 10 x 1000 = 10000 kilobits x 1000 = 10000000 bits = 10 to the power 7
10 to the power 8 = 100000000
10 to the power 7 = 10000000
100000000 / 10000000 = 10
HTH
Jon
02-05-2007 10:23 AM
Hi
The formula for calculating OSPF cost is:-
10 to the power 8 / BW in bits/sec
So
Bandwidth calculation:
Ethernet = 10Mbits per sec = 10 x 1000 = 10000 kilobits x 1000 = 10000000 bits = 10 to the power 7
10 to the power 8 = 100000000
10 to the power 7 = 10000000
100000000 / 10000000 = 10
HTH
Jon
02-05-2007 01:34 PM
You might also try taking a look at auto-cost, here:
:-)
Russ
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