From: Lachlan Kidd (lkidd@xxxxxxxxxxxxxxxxxxx)
Date: Tue May 15 2001 - 20:53:29 GMT-3
Hi Justin,
Firstly x=100000000/cost. Not sure if that helps. I find it easier to t
hink
of the problem in terms of exponents.
100000000=1x10^8 or 100x10^6 (which we know as 100Mb). If you think of it as
cost=100Mb/x then it gets a little easier.
If the link speed is 10Mb then cost=100Mb/10Mb=10. The catch with this is to
make sure that the units (Mbps, Kbps etc) are the same. If the link speed is
64Kbps then it's probably easier to go back to the basic unit (bits)
cost=100000000/64000=1562.5.
I hope I haven't made this worse <grin>.
Regards,
Lachlan
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Dean, Justin
Sent: Wednesday, 16 May 2001 9:23:AM
To: 'ccielab@groupstudy.com'
Subject: OSPF Cost calculation
Does anyone know of an easy way to figure out ospf cost. I know that it is
100000000/bandwidth =cost but what if the requirement is to make a link
appear as a cost of # but dont use the ip ospf cost command. 100000000 / x =
cost. I need to find out x to make a bandwidth statement on the interface.
My math skills are rusty to say the least, so if anyone knows how to come up
with this figure quickly please help. thanks,
justin
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